NguyenTuChung 19145348
NguyenTuChung 19145348
NguyenTuChung 19145348
[Instrument Panel]
Certification ECU Center Connector Tire Pressure Power Steering Gateway ECU
No.1 Warning ECU ECU
Power Source
Control ECU ID Code Box
Daytime Running Hybrid Vehicle
Light Relay Control ECU
Power Outlet
Relay Engine Control
Module
Mirror Heater Center Connector
Relay No.2
Body ECU
Headlight Beam
Level Control ECU
ACC Relay
Driver Transmission
Side J/B Control ECU
Stereo Component
Amplifier
Skid Control
ECU
Navigation ECU
Airbag Sensor Assembly A/C Control Assembly
20
PRIUS (EM03Q0U)
F
[Body]
Battery Fan
Relay
Tire Pressure
Warning
Antenna
and Receiver
21
PRIUS (EM03Q0U)
F RELAY LOCATIONS
3 : Engine Room R/B
Engine Compartment Left (See Page 20)
: Engine Room J/B
Fuse Holder
2
3
ABS NO.1 Relay 5 5 3
1 4 2
1
2
3 3
FAN NO.2 Relay 5 5 5 3
1 4 2 1 2 *7 *12
1
2 H-LP HI LH
2 10A
5 3 1
2 10A
1 H-LP HI RH *9 *13
*3
H-LP LO LH
2 2 *1
1
5 4 3 2 *1
H-LP LO RH *14
1 2 7.5A 1
DRL
*4
2 1
5 *10
*5
2 Unit A
3 5
1
Unit C Unit B
22
PRIUS (EM03Q0U)
F
Unit A 1
3
2
4
1
3
2
4
(from Engine Room
Main Wire)
3B 3C 3F
3 4 3 4
Back View 1 2 1 2
(from Engine
Room Main Wire)
3E
Side View
3D
(from Engine
Room Main Wire)
Top View
To Fuse Holder
Side View
3M 3A
1
1
(from Engine
(from Frame Wire) Room Main Wire)
23
PRIUS (EM03Q0U)
F RELAY LOCATIONS
3 : Engine Room R/B
Engine Compartment Left (See Page 20)
: Engine Room J/B
8
5
7
8 6
3G 5
7
6 4
5 3
4 2
3 1
2
1 (from Engine Room
Main Wire)
8 8
7 7
6 6
5 3H 5
4 4
3 3
2 2
1 1
Unit C
Top View Back View
HEV
2 20A 1 1 1
2 2
3 3
4 3J 4
5 5
6 6
7 7
8 8
HORN
(from Engine Room
2 10A 1
Main Wire)
1 1
2 2
3 3
4 3I 4
5 5
6 6
AM2 7 7
2 15A 1 8 8
3K
EFI 1 1
2 15A 1
(from Engine Room
Main Wire)
24
PRIUS (EM03Q0U)
Memo
25
PRIUS (EM03Q0U)
F RELAY LOCATIONS
[Engine Room R/B and Engine Room J/B Inner Circuit]
Unit A 1 2
1 3M 1 3D
100A DC/DC
1 3E
2 1
1 3A
60A P/I
2 1 1 2
3 3B 1 3B
40A HEAD MAIN 50A PS HTR
1 2
2 3B
30A RDI
2 1 1 2
3 3C 1 3C
30A P CON MTR 40A HTR
2 1 1 2
4 3C 2 3C
30A ABS-2 50A EPS
1 3F
Fuse Holder
2 1 1 2
3 3
10A ABS MAIN1 10A HAZ
2 1 1 2
3 3
10A ABS MAIN2 10A BATT FAN
2 1 1 2
3 3
15A ABS MAIN3 10A ETCS
2 1 1 2
3 3
15A DOME 25A ABS-1
2 1 1 2
3 3
30A CDS FAN 7.5A P CON MAIN
2 1 1 2
3 3
30A PTC HTR1 30A AMP
2 1 1 2
3 3
30A PTC HTR2 10A CHS W/P
1 2
1 3L 3
15A FR FOG
26
PRIUS (EM03Q0U)
F
Unit C 1 3J
IGCT Relay
1 2
4 3J
20A HEV
3 3J
2 3J
HORN Relay
1 2
8 3J
10A HORN
7 3J
1 3I
IG2 Relay
1 2
4 3I
15A AM2
2 3I 3 3I
5 3I
EFI M Relay
1 2
1 3K 8 3I
15A EFI
6 3I 7 3I
Unit B 1 3H
AC W/P Relay
4 3H
2 3H 3 3H
5 3H
BK/UP LP Relay
8 3H
6 3H 7 3H
1 3G
FAN NO.1 Relay
4 3G
2 3G 3 3G
5 3G
C/OPN Relay
8 3G
6 3G 7 3G
27
PRIUS (EM03Q0U)
F RELAY LOCATIONS
2 : Engine Room R/B No.2 Right Side of Reserve Tank (See Page 20)
3 3 3 3 3 3
1 2 5 5 5 5 5
1 2 1 2 1 2 1 2 1 2
5
F16
2 2
1 1
1 5A 2
DC/DC-S
120A MAIN 1 2
(for High Current)
F15
1 1
28
PRIUS (EM03Q0U)
Memo
29
PRIUS (EM03Q0U)
F RELAY LOCATIONS
: Driver Side J/B Lower Finish Panel (See Page 20)
16151413121110 9
1413121110 9 8 8 7 6 5 4 3 2 1
7 6 5 4 3 2 1
19 1
20 2 (from Instrument (from Instrument
21 3
22 4
1A Panel Wire) Panel Wire)
23 5
24 6
25 7 9 18
26 8
8 17
1G 1F 7 16
27 9 6 15
28 10 5 14
29 11 4 13
30 12 3 12
2 11
31 13 1 10
32 14
33 15 (from Instrument
1 16 1 19
34 16
2 17 2 20 7654321 Panel Wire)
35 17 3 21 87654321
36 18 3 18 14 1312 1110 9 8
4 19 4 22 16 15 14 1312 1110 9
5 20 5 23 1H
6 21 6 24
7 22 7 25
(from Engine Room 8 26
Main Wire) 1 17
8 23 9 27 18 9
9 24 10 28 17 8 2 18 17 1
16 7 3 19 18 2
10 25 11 29 4 20 19 3
16 1 15 6
1D 11 26 12 30
14 5
5 21 20 4
17 2 6 22 21 5
18 3 13 4 7 23 22 6
19 4 12 27 13 31 12 3 8 24 23 7
20 5 13 28 14 32 11 2 24 8
21 6 14 29 15 33 10 1 9 25
22 7 15 30 16 34
1E
10 26 25 9
17 35 11 27 26 10
23 8 18 36 12 28 27 11
24 9 4 28 12
25 10 3
26 11 2 13 29
1 3 29 13
1 14 30
4 15 31 30 14
5 2
27 12 16 32 31 15
28 13 2 6 32 16
1
29 14
30 15
2 (from Instrument
3 2 1 Panel Wire)
(from Floor Wire) 1 1
1 8 7 6 5 4
1I 4
3
3 1
4
1O 1 1
2
8 7 6 5 4 1
5
6 2 5 3 5 4 3 3 2 1
(from Instrument
(from Roof Wire) Panel Wire)
2 2
30A PWR
(for High Current) 1J 1 2 3
4 5 6 7 8
40A DEF
(for High Current)
(from Instrument
Panel Wire)
1 1
30
PRIUS (EM03Q0U)
F
1
2
3
4
5
6
7
8
9
Body ECU 10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
1K 101112131415161718 6 7 8 9 10 1N
7 8 9 101112 6 7 8 9 10111213 13121110 9 8 7 6
121110 9 8 7 1 2 3 4 5 6 1 2 3 4 5 6 7 8 9 1 2 3 4 5 1 2 3 4 5 54 321
6 5 4 3 2 1
(from Instrument
(from Instrument Panel Wire)
Panel Wire)
1L 1M
123456789 1 2 3 4 5
6 7 8 9 10
101112131415161718
31
PRIUS (EM03Q0U)
32
IGN
7.5A
PWR OUTLET FR
: Driver Side J/B
15A ECU-B
15A
F RELAY LOCATIONS
ACC-B
25A
DOOR
25A
STOP
ACC 7.5A
7.5A OBD
PWR OUTLET 7.5A
15A GAUGE
10A
ECU-IG
7.5A
PRIUS (EM03Q0U)
WSH
20A
RR WIP
FR DOOR 15A
20A WIP
A/C (HTR) 30A
10A M/HTR
PANEL 15A
7.5A
Lower Finish Panel (See Page 20)
TAIL
10A
Memo
33
PRIUS (EM03Q0U)
F RELAY LOCATIONS
[Driver Side J/B Inner Circuit]
2 1G 10 1D
6 1E 29 1D
13 1F 15 1A
30 1D T-LP Relay 33 1A
10A TAIL
1 1B 10 1E
15 1E 7.5A PANEL
6 1M
3 1E
2 1N
9 1L
7 1M
13 1A
8 1N
8 1L
8 1M
7 1F
9 1M
3 1M
6 1N
4 1M
10 1M
5 1M
9 1N
5 1O
PWR Relay 7 1N
12 1A 1 2
17 1D
18 1L 30A PWR
2 1H
24 1E
11 1H
21 1A 20A FR DOOR
10 1H
9 1D
12 1D 1 1D
25 1A
6 1D
4 1E
12 1F 6 1O
3 1I
DEF Relay 11 1K
17 1A 1 2
2 1J
35 1A 40A DEF
12 1N 4 1N
16 1F
4 1K
34 1A
16 1A 13 1N
23 1A 25A DOOR
1 1H
8 1E
13 1E 2 1D
12 1G
1 IJ
34
PRIUS (EM03Q0U)
F
(Cont'd)
7.5A STOP
18 1A
30 1E 7.5A OBD
5 1L
14 1E 15A PWR OUTLET FR
2 1K
17 1E
8 1K
28 1E
6 1K
12 1E
25A ACC-B
7 1K 9 1K
1 1O 15A ECU-B
5 1K
15 1D
6 1G
1 1L
15 1L
1 1I
4 19 1A
3 5
7 1J 1 1C
1 2
5 1N 10 1A
31 1A HTR Relay
16 1L 14 1A
2 1
28 1D LR IG 13 1L
4 3
32 1A +B LL 27 1D
5 6
11 1L EL ER 12 1L
8 7
17 1L EHW GND
5 1G
Flasher Relay
19 1E
11 1F
7 1L
1 1F Noise Filter
24 1A
9 1F 5 3 7.5A ECU-IG
3 1O
13 1D
2 1 2 1F
3 1J
10 1F
IG1 Relay
36 1A 20 1E
30A WIP
2 1I 14 1L
11 1E 32 1E
20A WSH
2 1A 10 1G
1 1M
10A GAUGE
2 1M
35
PRIUS (EM03Q0U)
F RELAY LOCATIONS
[Driver Side J/B Inner Circuit]
(Cont'd)
15A RR WIP
25 1D
11 1N
10 1N
15A M/HTR
1 1N
29 1A
10 1L
10A A/C (HTR)
10 1K
8 1J
18 1E
2 1E INV W/P Relay
11 1A 10 1A
1 1G
9 1A
15 1F
21 1E
7.5A IGN
27 1A 4 1J
16 1E
1 1K
12 1K 5 1J
15A PWR OUTLET
3 1N
7.5A ACC
4 1L
6 1L
14 1G
36
PRIUS (EM03Q0U)
F
(Cont'd)
21 25 1 19 4 5
14 1F
ACC HAZ GND TRLY ALTB SIG 20
9 1E PCTY 24 1D
13
4 1O KOF 6 1F
8 26
4 1I HU DCTY 21 1D
14 1H 7 1N
10
5 1H UL1 5 1D
22
2 1O RCTY 20 1D
7
27 1E ILL 2 1L
13 1H 30 1A
12
4 1H L1 12 1H
6
3 1D ECUB 3 1G
17 1H 25 1E
2 15
8 1H ACT+ HORN 28 1A
Body ECU
8 1F 26 1E
8 1G 23 1E
9
1 1E KSW 4 1F
4 1G 15 1H
22 1A 6 1H
16
5 1F 22 1D
17
9 1G MPX1 18 1H
23
7 1D BCTY 9 1H
3
26 1A ACT- 4 1D
7 1E 18 1D
3 1L 16 1H
18 14
31 1E OBD2 L2 7 1H
37
PRIUS (EM03Q0U)
F RELAY LOCATIONS
: Center Connector No.1 Behind the Combination Meter (See Page 20)
1 2 3 4 5 6 7 8 9 10111213141516 1 2 3 4 5 6 7 8 9 10111213141516
38
PRIUS (EM03Q0U)
Memo
39
PRIUS (EM03Q0U)
F RELAY LOCATIONS
[Center Connector No.1 Inner Circuit]
13 4F 10 4E
3 4C 9 4D
9 4K 11 4E
16 4C 10 4D
4 4A 6 4E
12 4E 10 4J
16 4F 4 4F
13 4E 16 4K
7 4C 14 4F
12 4D 1 4B
4 4G 5 4G
2 4D 10 4B
14 4I 10 4F
11 4D 2 4F
11 4F 9 4I
2 4C 3 4F
13 4K 8 4I
5 4F 4 4B
15 4K 9 4F
9 4C 2 4B
16 4I 7 4F
10 4C 3 4B
9 4E 8 4F
3 4E 13 4A
11 4I 16 4G
2 4E 8 4B
12 4I 2 4A
4 4E 6 4B
10 4I 1 4A
1 4E 12 4A
14 4H 7 4A
14 4E 11 4A
10 4L 15 4G
11 4L 14 4C
4 4H 6 4A
8 4K 12 4C
16 4L 12 4H
14 4K
40
PRIUS (EM03Q0U)
F
(Cont'd)
5 4C 11 4C
15 4A 3 4A
10 4A 15 4C
16 4H 15 4I
5 4D 5 4B
15 4J 15 4B
6 4D 14 4B
14 4J 12 4F
7 4D 4 4C
13 4J 15 4H
8 4D 8 4C
12 4J 14 4A
4 4D 6 4C
16 4J 16 4A
5 4E 9 4B
11 4J 14 4G
1 4D 6 4L
13 4G 2 4J
13 4D 2 4G
12 4L 9 4J
5 4H 9 4G
3 4G 7 4J
13 4C 7 4G
3 4H 6 4I
14 4D 6 4G
3 4J 1 4J
3 4D 3 4K
13 4I 1 4I
1 4C 4 4J
6 4F 2 4I
15 4F 6 4J
6 4K 4 4I
7 4K 7 4I
1 4F 7 4L
13 4H
8 4J
1 4G
5 4J
4 4K
3 4I
5 4K
41
PRIUS (EM03Q0U)
F RELAY LOCATIONS
: Center Connector No.2 Instrument Panel Brace RH (See Page 20)
1 2 3 4 5 6 7 8 9 10111213141516 1 2 3 4 5 6 7 8 9 10111213141516
5A
(Instrument Panel Wire) (Instrument Panel Wire)
5H
16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
5B 5I
16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
5C 5J
16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
5D 5K
16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
5E 5L
16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
5F 5M
16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
5G 5N
16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
42
PRIUS (EM03Q0U)
F
[Center Connector No.2 Inner Circuit]
10 5D 12 5F
8 5E 13 5F
5 5D 5 5B
15 5K 16 5C
6 5D 3 5M
14 5K 2 5L
2 5F 6 5B
14 5L 6 5F
14 5B 9 5F
15 5J 12 5E
15 5B 7 5K
14 5J 7 5N
4 5B 11 5C
16 5J 13 5M
4 5D 11 5H
11 5J 8 5M
3 5D 6 5H
12 5J 16 5B
13 5D 16 5I
13 5G 9 5D
8 5C 16 5N
8 5G 7 5A
4 5C 14 5C
13 5J 10 5K
9 5E 3 5J
9 5C 10 5E
8 5L 5 5A
8 5I 4 5G
15 5H 6 5A
14 5M 6 5L
11 5F 4 5I
10 5F 1 5D
13 5E 13 5I
5 5K 2 5D
7 5M 12 5I
1 5F
13 5K
43
PRIUS (EM03Q0U)
F RELAY LOCATIONS
[Center Connector No.2 Inner Circuit]
(Cont'd)
11 5D 1 5A
2 5G 8 5H
1 5G 2 5A
16 5H 16 5K
9 5I 2 5E
10 5I 14 5N
12 5K 6 5C
12 5D 6 5E
5 5G 7 5C
9 5K 7 5E
11 5E 1 5B
14 5F 3 5E
9 5A 2 5B
15 5D 4 5E
12 5G 3 5B
1 5L 5 5E
14 5E 2 5C
15 5E 15 5I
4 5M 1 5C
3 5L 7 5H
4 5L 12 5N
3 5G
10 5C 15 5C
12 5H 2 5J
9 5N 8 5N
6 5G 12 5C
8 5A 7 5L
12 5B 6 5I
4 5K 7 5I
6 5M 5 5I
12 5L 13 5C
10 5G 3 5I
11 5G 11 5K
9 5G 1 5E
5 5L 15 5L
5 5M
44
PRIUS (EM03Q0U)
F
(Cont'd)
9 5J 10 5M
10 5L 10 5N
10 5J 11 5M
11 5L 11 5N
6 5J 6 5N
4 5H 6 5K
7 5J 14 5D
5 5H 14 5H
5 5J 13 5L
3 5H 1 5J
4 5J 2 5K
2 5H 3 5K
8 5J 1 5K
8 5K 3 5N
12 5M 2 5N
13 5H 2 5I
9 5M 5 5N
9 5L 4 5N
2 5M 7 5D
1 5H 16 5L
8 5D 14 5I
16 5M 11 5I
3 5C
45
PRIUS (EM03Q0U)
H SYSTEM CIRCUITS
2007 PRIUS
ELECTRICAL WIRING DIAGRAM
SYSTEM CIRCUITS
Page
ABS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282
Air Conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 352
Audio System (Built–in Amplifier) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334
Audio System (Separate Amplifier) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324
Automatic Glare–Resistant EC Mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320
Automatic Light Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
Back–Up Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310
Combination Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 342
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
Door Lock Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Engine Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
EPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276
Front Fog Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
Front Wiper and Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
Garage Door Opener . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 322
Headlight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Headlight Beam Level Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 308
Hybrid Vehicle Immobiliser System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Ignition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Illumination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
Interior Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
Key Reminder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Light Auto Turn Off System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
Luggage Compartment Door Opener . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
Mirror Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 316
Multi–Display (Built–in Amplifier) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334
Multi–Display (Separate Amplifier) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324
Multiplex Communication System (AVC–LAN Bus) . . . . . . . . . . . . . . . . . . . . 76
Multiplex Communication System (BEAN Bus) . . . . . . . . . . . . . . . . . . . . . . . . 68
Multiplex Communication System (CAN Bus) . . . . . . . . . . . . . . . . . . . . . . . . . 72
Power Outlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 312
Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Power Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198
Push Button Start System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Radiator Fan and Condenser Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 348
Rear Window Defogger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 316
Rear Wiper and Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Remote Control Mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 314
Seat Belt Waning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Shift Control System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248
Smart Key System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
SRS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 301
Stop Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Taillight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
Theft Deterrent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238
62
PRIUS (EM03Q0U)
H
Page
Tire Pressure Warning System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 296
TOYOTA Hybrid System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
TRAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282
Turn Signal and Hazard Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
VSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282
Wireless Door Lock Control (w/ Smart Key System) . . . . . . . . . . . . . . . . . . . 208
Wireless Door Lock Control (w/o Smart Key System) . . . . . . . . . . . . . . . . . . 226
63
PRIUS (EM03Q0U)
Power Source
W
R
B
L
1 3B 2 3B 1 3C 2 3C 1 3F
30A PTC HTR1
2 2 2 2 1 2 W
50A PS HTR 3
40A HTR
50A EPS
30A RDI
30A PTC HTR2
1 2 R
1 1 1 1 3
25A ABS–1
2 30A AMP
1 2 B 1 3D
100A DC/DC
3 1 2 W
3
30A ABS–2
1 4 10A CHS W/P
1 2 L
3C
W
1 2 G
3
1 3E 1 3M 15A DOME
15A FR FOG
1 2 R
3
W
1 2 G
3
1 B
C 5(A), C 6(B)
1 2 B W
S 3
3 A
60A P/I
W
1
1 2 W W
3A
4 IN1 1 BE1
3
1 2 W
3B
2 B 1 A
120A
MAIN 10A ABS MAIN2 10A ETCS
1 2 R 1 2 GR
3 3
F15(A), F16(B)
Fusible
Link Block
15A ABS MAIN3 30A P CON MTR
3
1 2 L 1 2 G
3 3C
W
1 2 L
3
64
PRIUS (EM03Q0U)
W
8
R
4J
4 3 5
W W
IA1 4I 4J
1 1 1
V V
IA3 4I 4J
W
W 1 3I 2 3I
IG2
Relay
3
W–B W–B
3I
15A AM2
1 4 1
W 1 2 W A A W B
3K 3I IA1
J2
Junction
Connector
20A HEV
1 2 7. 5A DRL
B 1 2 P
3 3
(∗1) (∗1)
15A EFI
P
1 2 15A H–LP LO LH (∗2)
10A H–LP LO LH (∗3) (∗2)
1 2 L
3
(∗3)
10A HORN
B
1 2 15A H–LP LO RH (∗2)
(∗2) 10A H–LP LO RH (∗3)
B L 1 2 L
3 3 3
(∗1) (∗3)
B
(∗2) 10A H–LP HI LH
4
W 5 3 B 3 5 W 1 2 O
3 3 3 3 3 3
(∗2)
W 1 2 G B 2 1 Y V
3 3 3 3
(∗3)
H–LP Relay DIM Relay
10A H–LP HI RH
1 2 V
3
65
PRIUS (EM03Q0U)
Power Source
T–LP Relay 7. 5A PANEL
1
W W
1B
10A TAIL
40A DEF
P6 1 2
Power Source Control ECU
W 12 35 V
AM2 IG2D
W–B
V
25A DOOR
10 5G 9 4J 7 4J 7. 5A STOP
7. 5A OBD
5 5L 9 4G 7 4G
15A ECU–B
W–B
W–B
B
IG1 Relay 7. 5A ECU–IG
5 3
3 30A WIP
2 1
1J
B
20A WSH
6 4I
6 4 7. 5A IGN
B 10A GAUGE
4G 1J
9 25A ACC–B
G
W 15A RR WIP
1K
1 3
15A M/HTR
A12
ACC
Relay
10A A/C(HTR)
2 5
5 15A PWR OUTLET
G
W–B
W–B
1J
7. 5A ACC
3 4G
17 1E
J25
W–B
5 4H Junction
Connector
W–B A A W–B
A
EF W–B IH
66
PRIUS (EM03Q0U)
: Parts Location
Code See Page Code See Page Code See Page
A12 48 F15 A 28, 53 J25 50
C5 A 46 F16 B 28, 53 P6 51
C6 B 46 J2 47
: Relay Blocks
Code See Page Junction Block and Wire Harness (Connector Location)
1B 30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1E
30
1J Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1K 31
3A
3B
3C
23
3D
3E Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
3F
3I
24
3K
3L 22
3M 23 Frame Wire and Engine Room J/B (Engine Compartment Left)
4G
4H
38 Instrument Panel Wire and Center Connector No.1 (Behind the Combination Meter)
4I
4J
5G
42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5L
: Ground Points
67
PRIUS (EM03Q0U)
Multiplex Communication System – BEAN Bus
G1
(ACC) (IG) (BAT) Gateway ECU
7. 5A 7. 5A 15A
ACC ECU–IG ECU–B
BATT IG ACC
10 1 2
4 1L 7 1L 5 1K
G
P
D
J19 14 5C 12 5C 10 5C
Junction
Connector
D
10 5K 7 5L 12 5H
G
Y
8 5L
15 5H
O
68
PRIUS (EM03Q0U)
∗ 1 : w/ Smart Key System
∗ 2 : w/o Smart Key System
G1
Gateway ECU
W–B
GR
W
8 5C
14 4I 4 5C 16 5C 13 5C
9 II1
8 5G
Power Source Control ECU
2 4D 13 5J 2 5L 11 5K
B
24
GR
B
MPX2
W
18 16 3
MPX1
Transmission
P6
ID Code Box
MPX2 MPX2 MPX+
Control ECU
A8
T4
T5
GR
19 17 11 7 1E
13 5G
GR
3 1L
13 5D 8 II1
GR
B
LG
P
GR
3 IG2
7 4I 11 4D 8 5J
11 5H
GR
7 4L 11 4F 8 5K
Combination Meter
25
MPX– 8 5M
C10
MPX+
W–B
(∗1)
GR
24
GR
B
Certification ECU
31
W
B
MPX1
(∗2)
W
MPX2
S11
2 IG1 9 1G
7
32
W
SIL
17
2 4C MPX1
(∗1)
B
Body ECU
B 5(A)
D1
MPX2 Data Link
13 4K 15 A Connector 3
16 4L A
J24
B
Junction
12 Connector
Warning ECU
Tire Pressure
MPX2 A
B
14 4K
MPX1
T11
W–B
6
W
IH
69
PRIUS (EM03Q0U)
Multiplex Communication System – BEAN Bus
System Outline
BEAN consists of body electrical systems such as body ECU, A/C control assembly, power source control ECU, combination
meter, tire pressure warning ECU, certification ECU∗, transmission control ECU, ID code box and gateway ECU. Gateway
ECU has communication circuit to correspond with different types of communication data. Different types of communication
data can be shared among communication parts after it goes through gateway ECU. Vehicle information is input to body
ECU at an assembling plant as a representative ECU which delivers the information to other ECUs through multiplex
communication.
∗ Optional equipment
: Parts Location
Code See Page Code See Page Code See Page
A8 48 G1 49 S11 51
B5 A 48 J19 50 T4 51
C10 49 J24 50 T5 51
D1 49 P6 51 T11 51
70
PRIUS (EM03Q0U)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1E
30
1G
Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1K
31
1L
4C
4D
4F
38 Instrument Panel Wire and Center Connector No.1 (Behind the Combination Meter)
4I
4K
4L
5C
5D
5G
5H
42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5J
5K
5L
5M
: Ground Points
71
PRIUS (EM03Q0U)
Multiplex Communication System – CAN Bus
G1
(ACC) (IG) (BAT) Gateway ECU
7. 5A 7. 5A 15A
ACC ECU–IG ECU–B
BATT IG ACC CA1H CA1L GND
10 1 2 17 18 24
4 1L 7 1L 5 1K
W–B
14 5C 12 5C 10 5C
G
Y
16 5C
10 5K 7 5L 12 5H
G
Y
J19 2 5L
Junction
Connector
D 8 5L
Y
15 5H
E6 Y1
Engine Control Module Yaw Rate Sensor
J17
Junction CANH CANL CANH CANL
Connector
31 30 3 2
A
(Shielded)
A
W
B
(Shielded)
A
W
B
(Shielded)
W
B
W–B
B A B A B A
B A J18 B A
A Junction Connector
(Shielded)
A
W
B
W
B
W–B
8 9 W
CANH CANL
A B
J25
Junction
Connector
A H14
Hybrid Vehicle Control ECU
A
W–B A A W–B
W–B
J24
IH Junction Connector
72
PRIUS (EM03Q0U)
G1
Gateway ECU
SIL
7
P8 B11 S8
Power Steering ECU Battery ECU Skid Control ECU
W
(Shielded)
11 5K W
W
B
B
W
7 1E
(Shielded)
B
(Shielded)
3 1L
W
B
(Shielded)
B
LG
A B A B A B
11 5H
A B A B J15 A B
Junction
Connector
8 5M
(Shielded)
(Shielded)
(Shielded)
W
W
B
B
W
9 10 14 6
CANL CANH CANL CANH
SIL
W S13 D1
7
(Shielded)
(Shielded)
(Shielded)
(Shielded)
(Shielded)
B Connector 3
A A A A A A
W–B A
J16
Junction Connector
73
PRIUS (EM03Q0U)
Multiplex Communication System – CAN Bus
System Outline
CAN has two lines as a pair which make communication with operating voltage. CAN has excellent data speed and error
detecting capacity. It consists of vehicle control systems such as hybrid vehicle control ECU, engine control module, yaw
rate sensor, battery ECU, power steering ECU, skid control ECU, steering sensor, data link connector 3 and gateway ECU.
Gateway ECU has communication circuit to correspond with different types of communication data. Different types of
communication data can be shared among communication parts after it goes through gateway ECU.
: Parts Location
Code See Page Code See Page Code See Page
B11 52 J16 50 P8 51
D1 49 J17 50 S8 51
E6 49 J18 50 S13 51
G1 49 J19 50 Y1 51
H14 49 J24 50
J15 50 J25 50
Code See Page Junction Block and Wire Harness (Connector Location)
1E 30
1K Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
31
1L
5C
5H
5K 42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5L
5M
: Ground Points
74
PRIUS (EM03Q0U)
Memo
75
PRIUS (EM03Q0U)
Multiplex Communication System – AVC–LAN Bus
G1
(ACC) (IG) (BAT) Gateway ECU
7. 5A 7. 5A 15A
ACC ECU–IG ECU–B
BATT IG ACC
10 1 2
4 1L 7 1L 5 1K
G
P
D
J19 14 5C 12 5C 10 5C
Junction
Connector
D
10 5K 7 5L 12 5H
G
Y
8 5L
15 5H
O
∗ 1 : w/ Navigation System
∗ 2 : w/ Separate Amplifier
∗ 3 : w/ Television Camera
∗ 4 : w/o Television Camera
76
PRIUS (EM03Q0U)
G1
Gateway ECU
W–B
W
W
B
16 5C 13 5C
6 5C 7 5C 2 5L 11 5K
6 5E 7 5E
W
W
B
7 1E
4 A (∗3) 5 A (∗3) 3 1L
4 B (∗4) 5 B (∗4)
TX1+ TX1–
M13(A), (B), M14(C)
Multi–Display
LG
TX+ TX– TX2+ TX2–
13 C 14 C 18 A (∗3) 19 A (∗3)
18 B (∗4) 19 B (∗4)
11 5H
(∗1)
(∗1)
W
W
P
P
Radio and Player
5 10 9 B 10 B 8 5M
R 5(B), R 6(A)
TX+ TX–
N3 5 A 15 A
Navigation ECU
W
(∗2)
(∗2)
O
P
7
SIL
8 7
TX+ TX–
D1
Data Link
Connector 3
S15
Stereo Component A
Amplifier J24
Junction
Connector
A
W–B
IH
77
PRIUS (EM03Q0U)
Multiplex Communication System – AVC–LAN Bus
System Outline
AVC–LAN consists of audio visual systems such as multi–display, navigation ECU∗, radio and player, stereo component
amplifier∗ and gateway ECU. Gateway ECU has communication circuit to correspond with different types of communication
data. Different types of communication data can be shared among communication parts after it goes through gateway ECU.
∗ Optional equipment
: Parts Location
Code See Page Code See Page Code See Page
D1 49 A 50 R5 B 51
M13
G1 49 B 50 R6 A 51
J19 50 M14 C 50 S15 51
J24 50 N3 50
Code See Page Junction Block and Wire Harness (Connector Location)
1E 30
1K Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
31
1L
5C
5E
5H
42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5K
5L
5M
: Ground Points
78
PRIUS (EM03Q0U)
Memo
79
PRIUS (EM03Q0U)
Push Button Start System and Hybrid Vehicle Immobiliser System
15A AM2
20A HEV
100A
DC/DC
MREL
4 C
2 2 2
IG2 Relay
O
Relay
1 3D 1 3J 4 3J 2 3J IGCT3 3J 3 3I 2 3I 1 3I
W–B
W–B
W
W
O
Y
V
L
1 IA3 4 IA1
W
V
1 4I 3 4I
1 4J 5 4J
W
V
W
W–B
EE EF
80
PRIUS (EM03Q0U)
H14(A), H15(B), H16(C), H17(D)
Hybrid Vehicle Control ECU
W G
V R
W
P
(BAT)
1 1B 3 1J 1 1M 16 5L 16 5H 8 1L 6 4F
15A DOME
V
5 2 7 5D 11 5D 13 1A 1 4C
2
IG1 Relay
10A GAUGE
25A ACC–B
G
R
Y
L
3
13 IG2 9 IG2 B 1 IG1
R
B
3 1
V
G
R
V
Y
J6
Junction Connector
22 21 8 13
9 1K 17 1E
W–B
W
G
1 3
A12
ACC Relay
Security
Buzzer (VFD)
2 5 Power
Supply
W–B
Circuit
3 4G
Combination Meter
BEAN
IC
13 4D 5 4H
C10
W–B
W–B
14 25 24
GR
BR
15 4 4 2
G W
4H 4C IG1 IG1
3
P
W–B
BR
IG2
W W
V V
Y Y
L L
W–B
W–B
IH II
81
PRIUS (EM03Q0U)
Push Button Start System and Hybrid Vehicle Immobiliser System
G G
G G
B B
GR
V V
5 1J
GR
GR
Y
10 IG1 GR (IG)
7. 5A ECU–IG
7. 5A ACC
9 4C 4 5C 8 5K 7 4I
8 II1
P
R
V
GR
16 4I 13 5J 8 5J 7 4L
9
9 1G 14 1G
GR
B
(∗1)
GR
Combination Meter
Certification ECU
3 11 31
V
Body ECU
C10
MPX2
S11
7 IA3
B 5(A)
A8 MPX2 DCTY KSW
32
A/C Control B 15 A 26 9
V
Assembly (∗1)
S 7(A), S 8(B), S 9(C), S10(D)
22 B Skid Control ECU 16 4L 21 1D 26 1E
SP1
B
Y
FL+ FL– FR+ FR– RL+ RL– RR+ RR–
28 D 22 D 32 A 22 A 35 B 27 B 31 C 23 C 14 4K 11 4F 3 4H
W
W
G
R
B
L
1
Door Courtesy SW
11 4D
14 4D 3 4J
6
Front LH
MPX1
B
Y
D7
MPX2 B
T11
2 13 12
W B GR
4C 4K
P P
W W
V V
Y Y
L L
W–B W–B
W–B W–B
82
PRIUS (EM03Q0U)
H14(A), H15(B), H16(C), H17(D)
Hybrid Vehicle Control ECU
G GR
B (BAT) O
V
9 5F (BAT)
15A
AM2
R
Y
L
GR
G
7. 5A
J9 STOP
V 7 5K Junction
2
C Connector
1 3I
W
8 1G C C 18 1A
V
L
4 IA1
16 IG2 8 1F 2 IA3 2 4
Stop Light SW
P
W
W
G
B
S16
12 5D 9 5K
7 4G 9 4G 3 4I 6 4E 5 4E 4 4I 1 3
L
7 4J 9 4J 5 5G 8 4J 10 4J 11 4J 6 4J
G
R
B
34 11 19 33 39 22 1
IG1D ACCD SPD AM1 STSW RDY STP
13 5G 8 5G
B
GR
GR Y
P B
W GR
V GR
Y Y
L L
W–B W–B
W–B W–B
B B
83
PRIUS (EM03Q0U)
Push Button Start System and Hybrid Vehicle Immobiliser System
PPOS
10 D
P P
GR GR
O O
P
W
GR
B
Connector
Junction
B W
J14
P
B
W
3 A
12 II1 KSW2
W
K 2(A), K 3(B)
Key Slot
2 4I
Power SW
COM
2 A
SS1 SS2 INDW INDS GND
P11
GR
W–B
P
4 4J 5 7 8 4 6
W–B
W
R
B
11 5G 9 5G
5 30 20 3 25 14 37 13 4
P LIN1 SOL2 SOL1 CDSW SSW1 SSW2 INDW INDS
10 5G 5 5L
W–B
W–B
GND2
P6 6 J25
Power Source Control ECU A Junction Connector
W–B
A A A
W–B
W–B
W–B
Y Y
B B
GR GR
GR GR
Y Y
L L
W–B W–B
W–B W–B
B B
IH
84
PRIUS (EM03Q0U)
H14(A), H15(B), H16(C), H17(D)
Hybrid Vehicle Control ECU
GR GR
O O
P W
GR O
K 2(A), K 3(B)
Key Slot ∗ 3 : Shielded
5 A 1 A
SOL1 SOL2 Transponder Key Coil
Transponder Key
Amplifier
A (∗3)
KSW1 GND TXCT CODE VC5
4 A 7 B 5 B 4 B 1 B
LG
O
R
Y
P
L
A (∗3)
12 4J 13 4J 14 4J 15 4J 16 4J 13 4G 10 4E 11 4E 13 4E 4 4G
Junction Connector
A (∗3)
J17
8 4D 7 4D 6 4D 5 4D 4 4D 1 4D 9 4D 10 4D 12 4D
A
LG
O
R
P
P
L
W–B
7 6 21 20 14 12 19 18 4
AGND TXCT CODE VC5 LIN1 ACC HEV0 HEV1 IG
GR
B
3 13 15
L L L
Y 4D 4I IA3
2 14 9
B GR B B
4D 4I II1
GR GR
GR GR
Y Y
L L
W–B
W–B
85
PRIUS (EM03Q0U)
Push Button Start System and Hybrid Vehicle Immobiliser System
∗ 3 : Shielded
GR
O O
W W
O O
G1
12 Gateway ECU
MPD2
LG
W
Y
GR
W
J16
(∗3) (∗3) A B
Connector
Junction
Junction
(∗3) Connector
W
W
B
J15
A B
B A B A B A
(∗3)
B
J18 A (∗3)
B A
(∗3) Junction
Connector 14 6
A
W
B
(∗3)
NE+ NE–
33 A 34 A P
W–B
8 5M
(∗3)
G
R
1 2 G A A 11 5H
C7 J14
LG
B B
GR
GR GR
Y Y
L L
A A LG
J12(A)
Junction
Connector W–B
A A
BR
EC
86
PRIUS (EM03Q0U)
H14(A), H15(B), H16(C), H17(D)
Hybrid Vehicle Control ECU
L
O
G1
Gateway ECU
6 21
7. 5A
IGN
W
B
7. 5A
P
2
6 5C 7 5C 10 5F
3 27 1A 15 1F
L
6 5E 7 5E 7 5M
O
Connector
W
Junction
B
J3
4 5
A
TX1+ TX1–
Y
L
M13
Multi–Display
W
P D A
Connector
Connector
Junction
Junction
J10
J6
D A
Y
L
B B
GR GR
LG LG
W–B W–B
87
PRIUS (EM03Q0U)
Push Button Start System and Hybrid Vehicle Immobiliser System
GND1 GND2
1 A 4 A
W–B
W–B
(BAT)
30A
P CON MTR
3 3C S1
Shift Control Actuator
G
1 3
P CON MTR
Relay
G
B
12 EB1 GR
LG
W
O
R
11 EB1
G
B
14 10 11 12 16 4 5 6 17
BMA MWA MVA MUA E2 RZ1 RB RA VC
W–B
W–B
W–B
W–B
W–B
GR
W
B
W
7 II1 13 5F 12 5F
W
B B B B
J12(A), J13(B)
3 5I 2 5L
Connector
Junction
W–B
11 5K B A B A
W–B
B
W
W–B
7 1E
GR A
8 EB1 J24
Junction
3 1L Connector
A A
W–B
LG
W–B
W–B
W–B
LG
W–B
EF IH
88
PRIUS (EM03Q0U)
System Outline
This is the system to change power supply mode by pushing power SW and to start hybrid system by operating power SW
and brake pedal simultaneously. It also has function to hold the electrical key in the key slot and not to release the key from it
unless the power supply condition and shift position are met. If there is abnormality in the system, amber portion of power
SW blinks to warn the driver.
1. ACC ON Operation
When the electrical key turns on half–inserted SW and deep–inserted SW after inserting in the key slot, transponder key
computer activates transponder key amplifier incorporated in key slot to identify ID. After the identification, if power SW is
pushed without depressing brake pedal, power source control ECU starts. The ECU confirms that the brake pedal is not
depressed from signal of stop light SW and also requests ID code box for ID identification result. If the ID identification is
normal, power source control ECU turns on ACC relay and changes indicator of power SW to green lighting. In
consequence, power supply is set to ACC ON condition.
2. IG ON Operation
If power SW is pushed without depressing brake pedal when ACC ON, power source control ECU confirms that the brake
pedal is not depressed, and then turns on IG1 relay and IG2 relay as well as change indicator of power SW to amber
lighting. Power supply is IG ON condition then.
3. Hybrid Start–Up Operation (READY)
When the electrical key turns on half–inserted SW and deep–inserted SW after inserting in the key slot, ID code box
activates transponder key amplifier incorporated in key slot to identify ID. After the identification, if power SW is pushed with
depressing brake pedal, power source control ECU starts. The ECU confirms that the brake pedal is depressed from signal
of stop light SW and also requests ID code box for ID identification result. If the ID identification is normal, the ECU turns on
ACC relay, IG1 relay and IG2 relay, and changes indicator of power SW to amber lighting. Power supply is IG ON condition
then.
After that, power source control ECU sends start–up signal to hybrid vehicle control ECU. Hybrid vehicle control ECU and ID
code box make communication for start–up permission. Hybrid vehicle control ECU controls to start–up hybrid system
(READY).
At starting up hybrid system, power source control ECU controls to light off indicator of power SW.
4. Power Supply Off Operation
∗ When shift range is in P range
If power SW is pushed with power supply at READY condition while the vehicle is stationary, power source control ECU
confirms that shift position is in P position, and then turns off ACC relay, IG1 relay and IG2 relay to put power supply in
OFF condition. The ECU also controls to light off indicator of power SW.
If power SW is pushed with power supply at IG ON condition and without depressing brake pedal while the vehicle is
stationary, power source control ECU confirms that shift position is in P position, and then turns off ACC relay, IG1 relay
and IG2 relay to put power supply in OFF condition. The ECU also controls to light off indicator of power SW.
If electrical key is taken off from key slot with power supply at ACC ON condition while the vehicle is stationary, power
source control ECU controls to put power supply in OFF condition automatically, which lights off indicator of power SW.
∗ When shift position is in other than P position
If power SW is pushed with power supply at IG ON (Including READY) condition while the vehicle is stationary, parking
lock operation is carried out. After that, power source control ECU confirms that shift position is in P position and then
turns off ACC relay, IG1 relay and IG2 relay to put power supply in OFF condition. The ECU controls to light off indicator of
power SW.
5. Key Interlock Operation
Power source control ECU controls to hold the electrical key in the key slot and not to release the key from it unless the
power supply condition and shift position are met. Power supply condition and shift position during the key interlock in
operation are as follows;
∗ At starting–up hybrid system
∗ At power supply at IG ON
∗ At power supply at ACC ON and shift position at other than P position
6. Emergency Stop Operation of Hybrid System
If power SW is kept pushed more than three seconds during driving, hybrid system stops and power supply is changed to
ACC ON.
7. Power Supply Resuming Control
Power source control ECU always stores power supply condition (OFF, ACC ON, IG ON)
When power supply is resumed after shutting off power supply by disconnecting battery terminal, original power supply
condition returns due to control of power source control ECU.
89
PRIUS (EM03Q0U)
Push Button Start System and Hybrid Vehicle Immobiliser System
: Parts Location
Code See Page Code See Page Code See Page
A8 48 J3 47 M13 50
A12 48 J6 50 P6 51
B5 A 48 J9 50 P11 51
C7 46 J10 50 S1 47
C10 49 J12 A 50 S7 A 51
D1 49 J13 B 50 S8 B 51
D7 52 J14 50 S9 C 51
E4 A 49 J15 50 S10 D 51
E6 C 49 J16 50 S11 51
E7 D 49 J17 50 S16 51
G1 49 J18 50 T4 51
H14 A 49 J24 50 T5 51
H15 B 49 J25 50 T11 51
H16 C 49 K2 A 50
H17 D 49 K3 B 50
: Relay Blocks
90
PRIUS (EM03Q0U)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A
30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1B
1D 30 Floor Wire and Driver Side J/B (Lower Finish Panel)
1E
1F
30
1G
1J Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1K
1L 31
1M
3C
23
3D
Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
3I
24
3J
4C
4D
4E
4F
4G
38 Instrument Panel Wire and Center Connector No.1 (Behind the Combination Meter)
4H
4I
4J
4K
4L
5C
5D
5E
5F
5G
5H 42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5I
5J
5K
5L
5M
: Ground Points
91
PRIUS (EM03Q0U)
TOYOTA Hybrid System
O
(BAT) (BAT)
15A AM2
20A HEV
L
1 3C 1 3E
2 2
W
2
40A HTR
1 B 4 A 5 A
C 5(A), C 6(B)
Relay
IGCT
AMD NODD VLO
Converter
1
S IGCT ID1
3 A 1 A 2 A
1 3J 4 3J 2 3J 3 3J 1 3I
2
V
L
O
Y
L
DC/DC
W–B
100A
5 IA2
W
B
1
R
4 IA1
1 3M 4 5H
V
B
W
W
B
6 5J 10 1A 1 1G
1 BE1 4 IN1 3 4K 3 4I
INV W/P Relay
V
W
B
1 A 2 B 1 4J 5 4J
11 1A 17 1E
W
V
5A
DC/DC–S
V
W–B
B
120A
MAIN
Motor (Inverter)
2
Water Pump
W
M
F15(A), F16(B)
V
W3
1
Y
L
Battery
B A
S27(A), S28(B)
EE Short Connector IH
(Water Pump)
92
PRIUS (EM03Q0U)
H14(A), H15(B), H16(C), H17(D)
Hybrid Vehicle Control ECU
L GR
GR
V P (BAT)
1 1C (IG)
16 5L 16 5H 8 1L
15A
10A DOME
5 2
GAUGE
HTR Relay
4 7 5D 11 5D 13 1A 2
R
Y
L
3
13 IG2 9 IG2 B
3 1
R
1 1M B
5 1N V
V
Y
J6
GR
GR
Junction Connector
22 21
B
4 5C 8 5K 11 5L
13 5J 8 5J 10 5J
Master
GR
B
(VFD) Buzzer
3 B 11 B 7 B
A/C Control Assembly
Power
MPX+ MPX2+ HR Supply
Circuit
A 7(A), A 8(B)
BEAN
W
G
R
V
IC
C10
1 2 3 4
THR GND VO S5 14 25 24
GR
BR
V A9
A/C Room Temp. Sensor
15 4 4 2
G W
4H 4C IG1 IG1
3
W P
BR
IG2
V W
Y V
L Y
L L
II
93
PRIUS (EM03Q0U)
TOYOTA Hybrid System
GR GR
GR
L L
9 4C 7 4I
O
V
13 9 4 16 4I 7 4L
GR
GR
9 1G
Indicator Lamp
(∗1)
GR
V
Malfunction
Certification ECU
31 8 II1 17
MPX1 MPX1
Body ECU
(∗2)
GR
W
B 5(A)
Combination Meter
32 15 A 26
(∗1)
B
B
C10
21 1D
11 4F
V
7 IA3 16 4L
Door Courtesy SW
1
V
11 4D
Front LH
26 14 4K D7
B
W
6
Warning ECU
Tire Pressure
MPX1
MPX2 B
T11
G
2 13 12
W B GR
4C 4K
13 13
P GR
5D 5G
W W
V V
Y Y
L L
L L
11
V
IG1
94
PRIUS (EM03Q0U)
H14(A), H15(B), H16(C), H17(D)
Hybrid Vehicle Control ECU
SPD1 ST2 RDY STP ST1–
19 A 5 A 28 A 3 B 2 B
V
GR GR
O
9 5F (BAT) (BAT)
R
Y
L
V 15A 7. 5A
AM2 STOP
7 5K
G
R
L
W
8 1G 1 3I 18 1A
V
16 IG2 8 1F B
4 IA1
2 4
W
Stop Light SW
12 5D 9 5K
W
S16
3 4I 6 4E 5 4E 1 3
L
C
8 4J 10 4J 11 4J C C
J9
R
R
Y
Junction
Connector
33 39 22
AM1 STSW RDY
8 8
GR
5G 5C
B B
GR GR
GR Y
W L
V L
Y V
L V
95
PRIUS (EM03Q0U)
TOYOTA Hybrid System
GR GR
O O
GR
R
Power SW
10 4E 11 4E A (∗3)
A (∗3)
5 7 8 4 6
W–B
9 4D 10 4D
Junction Connector
G
R
B
11 5G 13 4E 4 4G
W
19 18
14 37 13 4 A (∗3)
ID Code Box
HEV0 HEV1
J17
SSW1 SSW2 INDW INDS
10 5G 5 5L 7 4C A
MPX1 MPX2
T5
W–B
W–B
GND2
W–B
L
17 16
P6 6 J25
Power Source Control ECU Junction
A Connector
W–B
GR
B
A A
W–B
W–B
GR R
B W–B
GR GR
Y Y
L L
L L
V V
10 9
V V LG LG
4C 4E
2 14 9
GR B B
4D 4I II1
IH
96
PRIUS (EM03Q0U)
H14(A), H15(B), H16(C), H17(D)
Hybrid Vehicle Control ECU
GO NEO CANH CANL
13 C 12 C 8 A 9 A
GR ∗ 3 : Shielded
O O
O O
GR GR
G1
3 12 Gateway ECU
MPD1 MPD2
CA1H CA1L
LG
W
Y
17 18
B A J15 A B
(∗3) Junction Connector
(∗3)
W
W
B
B
(∗3)
(∗3) (∗3)
W
W
B
J16
Junction
J18 Connector
(∗3)
B A
B
(∗3) (∗3) Junction Connector
W
B
A A (∗3)
Please refer
2 D 1 D 31 C 30 C to page 113 Please refer
GO NEO CANH CANL for details to page 118 18 B 19 B
for details CAN–L CAN–H
Skid Control
W–B
W TC
S 8(B)
ECU
R L
J24
V
Junction W
A Connector
LG
W–B A A W–B
W–B P
GR GR
Y Y
L L
L L
LG W–B
B B
IH
97
PRIUS (EM03Q0U)
TOYOTA Hybrid System
O O
O O
G1
Gateway ECU
(BAT)
GTX+ GTX– 7. 5A
OBD
6 21
Connector
W
B
Junction
J15
6 5C 7 5C 5 1L
A B A B A B
G
6 5E 7 5E
13 5H
(∗3)
W
B
W
(∗3) 4 5 W–B
W
Multi–Display
TX1+ TX1– 12 5M
(∗3) (∗3)
G
M13
13 ID4 5 ID4 4 ID4
14 6 16 4
(∗3) CANL CANH BAT CG
Connector 3
(∗3) (∗3)
Data Link
W
B
W
TS SIL SG TC
D1
12 7 5 13
7 1 P
BR
W
L
Steering ECU
CANL CANH
B
Power
W
P8
2 1 2
L B
IA2 5H 5M
7 6 8
W Y
IA2 5H 5M
W–B W–B
P P
GR GR
Y Y
L L
L L
4 10 10
BR BR
II1 5N 5M
W–B W–B
B B
EC
98
PRIUS (EM03Q0U)
H14(A), H15(B), H16(C), H17(D)
Hybrid Vehicle Control ECU
GND1 GND2 TC
1 A 4 A 6 A
∗ 3 : Shielded
W–B
W–B
O O
O O
GR
(BAT)
GR
10A
BATT 3 1
FAN
Battery Fan
11 IN1
P
Relay
B14
10 5F 5 2
3
GR
LG
BR
LG
7 5M 11 5F
W–B 3
Motor Controller
2
Battery Blower
P
Blower Motor
+B
W–B
W–B
Battery
GND SI VM
B10
B9
1
1 2 4
3 5M 13 5F 12 5F
W–B
V
Y
V
A BR
Connector
Junction
2 5L V
J32
A
P Y
W–B
B B
W W
W–B
GR
Y Y
L L
L L
GR
W–B W–B
B B
BQ
99
PRIUS (EM03Q0U)
TOYOTA Hybrid System
O O(∗4)
(∗4)
O(∗4)
O O
O O
LG–R
LG–B
G–W
G–R
L–W
Y–B
L–O
L–B
GR
O
R
Y
L
15 B 5 B 16 B 6 B 17 B 7 B 18 B 8 B 19 B 9 B 20 B 10 B 21 B 11 B 22 B
VBB14 VBB13 VBB12 VBB11 VBB10 VBB9 VBB8 VBB7 VBB6 VBB5 VBB4 VBB3 VBB2 VBB1 GBB0
W–B
BR
Junction Connector
Y A
J30
A
W W–B
Y L
L GR
L
W–B
GR
W–B
B B
BL
100
PRIUS (EM03Q0U)
∗ 4 : High Voltage
O(∗4) O(∗4)
O(∗4) O(∗4)
Y
O
Current (IG)
Sensor
7. 5A
IGN
W
G
B
1 C 2 C 3 C 4 C 5 C 6 C 9 C 10 C 14 C 15 C 16 C
TB1 GB1 TB2 GB2 TB3 GB3 TC1 GC1 GIB VIB IB
AM IGCT IG2 21 1E 27 1A 15 1F
B11(A), B12(B), B13(C) 1 A 2 A 13 A
Battery ECU
O
O
1 4G
O
G
8 IF1 7 IF1
22 ID3 5 4K
O
G
Y
L
Connector
Junction
G A J6
Y Y
L L
L L
GR GR
W–B W–B
B B
101
PRIUS (EM03Q0U)
TOYOTA Hybrid System
O(∗4)
R
Y
O(∗4)
22 IC1 1 IC1 2 IC1
W
L
(∗4)
(∗4)
O
R
Y
1 E 1 D 3 A 2 A 1 A
Junction Connector
B
System Main Relay
1 C 1 B
L
O
(∗4)
O
(∗4)
A
A A L
S1
Shift Control Actuator
L A
Connector
Junction
A
J3
LG
W
O
P
8 16 4 5 6 17
PPOS E2 RZ1 RB RA VC
L
L MPX1 MPX2
19 18 T4
GR Transmission Control ECU
L
B
W–B W–B
102
PRIUS (EM03Q0U)
∗ 3 : Shielded
∗ 4 : High Voltage
W
G
G
R
R
B
Y
L
L
5 2 3 1 6 4
EPA EPA2 VPA2 VCP2 VPA VCPA
A13
Accel Position Sensor
(∗3)
(∗3)
(∗3)
(∗3)
O
(∗3)
G
R
B
L
(∗4)
O
(∗4)
1 E 1 D 9 B 10 B 11 B 16 B 26 B 25 B
– + MUU MVU MWU GINV MIVT MSDN
B–W
Y–B
L–B
L–Y
BR
G
I 9(A), I10(B), I12(D), I13(E), I14(G), I15(H), I16(I)
18 19 20 28 3 1
MUU MVU MWU GINV MIVT MSDN
Inverter
IGCT GND
14 15
R
R
R
B
B
IGCT GND1
Inverter
1 A 2 A
(∗3)
(∗3)
(∗3)
(∗3)
(∗3)
(∗3)
W–B W–B
W–B
A A A A A A J5 W–B
Junction
Connector
W–B
IK EF
103
PRIUS (EM03Q0U)
TOYOTA Hybrid System
∗ 3 : Shielded
W
G
(∗3)
GR
W
G
R
B
Y
(∗3)
(∗3)
(∗3) (∗3)
(∗3) (∗3)
GR
BR
W
G
G
R
R
B
27 B 28 B 7 B 8 B 23 B 24 B 12 B 4 B 5 B 6 B 21 B 20 B 22 B
MFIV OVH MIVA MIVB MIWA MIWB VH GUU GVU GWU GIVT GSDN GFIV
P
P P
W
GR–G
GR–R
BR–B
LG–B
W–G
G–B
V–Y
L–R
V
Y
L
P
2 16 25 24 27 26 17 7 8 9 6 4 5
MFIV OVH MIVA MIVB MIWA MIWB VH GUU GVU GWU GIVT GSDN GFIV
Inverter
R R
B B
W–B W–B
W–B W–B
104
PRIUS (EM03Q0U)
H14(A), H15(B), H16(C), H17(D)
Hybrid Vehicle Control ECU
GIVA GIVB GIWA GIWB OVL FCV VL CPWM CSDN CT GCNV
34 B 33 B 32 B 31 B 22 C 20 C 30 C 10 C 9 C 21 C 8 C
W
W
G
G
R
R
B
B
(∗3)
(∗3)
(∗3)
(∗3)
W
W
G
G
R
R
B
2 B 3 B 18 B 19 B 31 B 30 B 15 B 13 B 29 B 14 B 32 B
GIVA GIVB GIWA GIWB OVL FCV VL CPWM CSDN CT GCNV
BR–W
P
W–R
V–W
G–R
B–R
P–L
L
GR–B
V–R
GR
LG
12 13 10 11 5 12 13 4 6 15 3 14
GIVA GIVB GIWA GIWB OVH OVL FCV VL CPWM CSDN CT GCNV
Inverter Converter
IGCT GND
8 7
W–B W–B
W–B W–B
105
PRIUS (EM03Q0U)
TOYOTA Hybrid System
∗ 3 : Shielded
∗ 4 : High Voltage
(∗3)
V
(∗3)
3 IC1
(∗3)
V
(∗3)
1
Inter Lock SW
ILK
(∗3)
G
R
(∗3)
IRTN
W–B
W–B
W–B
W–B
I17
W
B
2
Connector
B A B A B A B A
Junction
J12(A)
L
B A
21 IC1
G
R
B
L
O(∗4)
O(∗4)
O(∗4)
O(∗4)
O(∗4)
O(∗4)
1 I 1 H 2 H 3 H 1 C 1 B 1 A 3 D 6 D 2 D 5 D
CVSW U V W W V U GRF GRFG GSN GSNG
R
Inverter
U V W
1 G 2 G 3 G
W–B W–B
O(∗4) O(∗4)
8
W–B W–B
EB1
O(∗4) O(∗4)
O(∗4) O(∗4)
106
PRIUS (EM03Q0U)
H14(A), H15(B), H16(C), H17(D)
Hybrid Vehicle Control ECU
GCS GCSG MRF MRFG MSN MSNG MCS MCSG MMT MMTG OMT OMTG
23 D 24 D 34 D 33 D 20 D 19 D 32 D 31 D 18 D 28 D 30 D 29 D
(∗3)
(∗3)
(∗3)
BR
Y
(∗3)
(∗3)
G
R
R
B
B
(∗3) (∗3)
P
L
(∗3)
BR
Y
BR
BR
G
G
R
R
Y
B
L
1 D 4 D 1 D 4 D 2 D 5 D 3 D 6 D 1 E 4 E 3 E 6 E
GCS GCSG MRF MRFG MSN MSNG MCS MCSG MMT MMTG OMT OMTG
W V U
M 2(A), M 3(B), M 4(C), M 5(D) 1 C 1 B 1 A M 6(A), M 7(B), M 8(C), M 9(D), M10(E)
Motor Generator No. 1 Motor Generator No. 2
O(∗4)
O(∗4)
O(∗4)
W–B W–B
O(∗4)
O(∗4)
O(∗4)
107
PRIUS (EM03Q0U)
TOYOTA Hybrid System
∗ 3 : Shielded
L
(∗3) 2 5F
BR
SB
W
G
R
P
Y
L
14 5L
L
3 1E
15 1E
W–B
8 A 6 A 5 A 3 A 4 B 5 B 6 B 1 B 2 B 3 B 1 2
B
VSX4 VCX4 VSX3 VCX3 VSX2 E2X2 VCX2 VSX1 E2X1 VCX1 SIF– SIF+
GSW2
S 4(A), S 5(B) 14 4E
Shift Lever Position Sensor
A18
C3
Circuit Breaker
Sensor
4 4H
W–B
W–B
108
PRIUS (EM03Q0U)
[Details of Engine Control Module Section]
(BAT)
B
15A G
EFI
R
2
R
B (IG)
O
7. 5A
IGN
15 1F
8 3I 6 3I 5 3I
EFI M C/OPN 21 1E
Relay Relay
O
7 3I 8 3G 7 3G 5 3G 6 3G
1 4G
W–B
G
R
L
G
B
1 BM1
14 4H
B
1 4E
3
G
BR
4
Fuel Pump
M
F14
5
G
W–B
7
W–B
W–B
EE BQ
109
PRIUS (EM03Q0U)
TOYOTA Hybrid System
[Details of Engine Control Module Section]
B B B
O
B
B
(BAT)
15A AM2
1 1 1 1
Injector No. 1
Injector No. 2
Injector No. 3
Injector No. 4
2
4 4G
2 2 2 2
I5
I6
I7
I8
IG2 Relay
12 4E
G
R
R
Y
O
4 3I 3 3I 2 3I 2 A 3 A 4 A 5 A 9 C 6 D 7 D
# 10 # 20 # 30 # 40 IGSW BATT MREL
W–B
1 IA3
+B FC
A
Connector
4 D 10 C
Junction
B
V
J2
A
B
1 4I
G
B
A A
Connector
Junction
B
J1
A A 1 4J
Power Source Control ECU
2 EB1
V
B
35
B
IG2D
4 EB1
P6
B
B
W–B
EF
110
PRIUS (EM03Q0U)
∗ 3 : Shielded
(BAT)
10A
ETCS
T2
Throttle Control B B
Motor
B
M+ M–
2 1
2 2 2 2
IGf IGf IGf IGf
Ignition Coil and
Igniter No. 2
Igniter No. 3
Igniter No. 4
IGt IGt IGt IGt
(∗3)
P
L
3 3 3 3
I1
I2
I3
I4
GR
G
Y
B
6 B 5 B 4 B 5 D 8 A 9 A 10 A 11 A 23 A
M+ M– GE01 +BM IGT1 IGT2 IGT3 IGT4 IGF
E 4(A), E 5(B), E 6(C), E 7(D)
Engine Control Module
W
R
(∗3)
E
Connector
W
G
R
(∗3)
BR
Junction
2 2
J14
Engine Coolant
Ambient Temp.
Temp. Sensor
4 2 3
E
THA E2G VG
R
Mass Air Flow Meter
Sensor
1 2 3
E1
A6
VC VTA1 VTA2 1 1
BR
Throttle Position Sensor
+B E2
M1
1 5
BR
3 EB1
BR
E2
BR
(∗3)
4
T3
BR
(∗3)
B
BR BR BR
111
PRIUS (EM03Q0U)
TOYOTA Hybrid System
[Details of Engine Control Module Section]
(BAT) (IG)
30A 7. 5A
RDI ECU–IG
2 3B 24 1A
B
B
B
R J4
B Junction
W
B
Connector
B
1 3G 2 3G 3 3
1 3
2 5
4 3G 3 3G 3 3 3
W–B
LG
LG
L
L
E
E J9
Junction
Connector
E
LG
8 D
FAN
E1 NE+ NE– G2
E 4(A), E 5(B), E 6(C), E 7(D) 28 B 33 A 34 A 26 A
Engine Control Module
BR
A
A A
(∗3)
Junction
G
G
R
Junction
A B A B Connector Connector
2 2
Position Sensor
Position Sensor
A A A A A A A A
Crankshaft
Camshaft
BR
BR
BR
C7
C1
(∗3)
1 1
(∗3)
BR
112
PRIUS (EM03Q0U)
∗ 3 : Shielded
Hybrid Vehicle
Control ECU
Combination
Connector 3
Data Link
Meter
LG
LG
W
Y
P
E 4(A), E 5(B), E 6(C), E 7(D)
Engine Control Module 2 D 1 D 31 C 30 C 18 C 14 C
GO NEO CANH CANL W TC
BR
BR
BR
B
3 4E
11 4I
BR
13 II1
BR
BR
BR
BR
B
BR
EC ED
113
PRIUS (EM03Q0U)
TOYOTA Hybrid System
[Details of Skid Control ECU Section]
(BAT) (BAT)
25A 30A
ABS–1 ABS–2
2 2
3 4 3C
L
Junction Connector
C W W
J6
Connector
C C
Junction
Y
J 7(A)
A
C A L
V
Brake Master Stroke Simulator
L
W
Y
B
L
L
Cylinder Assembly
3 3 3 3 3 3 3 3 30 D 25 A
BCSS BSR MR2 MR1
2 1
5 2 5 2 5 1 5 1 S 7(A), S 8(B), S 9(C), S10(D)
B17
MR2+ MR1+
25 D 11 A
2 A 1 A
Short Connector
3 1 3 1 3 2 3 2
S 2(A), S 3(B)
2 B 1 B 3 3 3 3 3 3 3 3
R
R
GR
BR
G
P
GR
Y
B B
Junction Connector
P
B B
B B
J1
BR
P
D B
J 7(A), J 8(B)
Connector
Junction
R
F A F A
P G
P
114
PRIUS (EM03Q0U)
∗ 3 : Shielded
7. 5A 10A 10A
IGN ABS ABS
MAIN1 MAIN2
2 2
9 1A 3 3
R
B
B8
Brake Pedal Stroke Sensor
Y
VCSK SKG SKS1 SKS2
L
3 1 4 2
(∗3)
G
R
B
W
R
B
15 D 12 A 5 B 4 C 5 D 3 B 5 C 6 C 8 C 21 C 22 C 7 C
SR2 SR1 +BO1 +BO2 IG2 +BI1 +BI2 VCSK SKG SKS1 SKS2 SSK
S 7(A), S 8(B), S 9(C), S10(D)
Skid Control ECU
W
R
R
P
Y
2
P 33 8 5 22
B19
B
W
B
BR
2 IP1 1 IP1
G
1 2 7 19
R R
G P
P P
B B
115
PRIUS (EM03Q0U)
TOYOTA Hybrid System
[Details of Skid Control ECU Section]
A25 A26
ABS Speed Sensor ABS Speed Sensor
Rear LH Rear RH
1 2 1 2
W
L
L
1 BD1 2 BD1 1 BL1 2 BL1
(∗3)
(∗3)
W
W
B
B
2 IF1 3 IF1 4 IF1 8 IN1 9 IN1 10 IN1
(∗3)
B
BR
(∗3)
BR
35 B 27 B 31 C 23 C
RL+ RL– RR+ RR–
S 7(A), S 8(B), S 9(C), S10(D)
Skid Control ECU
SLRFR– SLAFL+ SLAFL– SLRFL+ SLRFL– SLARR+ SLARR– SLRRR+ SLRRR– SLARL+ SLARL– SLRRL+ SLRRL– SMC1 SMC2
34 A 1 D 2 D 8 D 26 D 19 D 9 D 20 D 18 D 15 A 27 A 16 A 26 A 4 A 3 D
BR
LG
LG
W
O
R
B
Y
L
21 13 14 27 28 12 11 26 25 10 9 24 23 20 6
FR– FL+ FL– FL+ FL– RR+ RR– RR+ RR– RL+ RL– RL+ RL– SMC1 SMC2
A2
ABS & BA & TRAC & VSC Actuator
116
PRIUS (EM03Q0U)
∗ 3 : Shielded
A3 A4
ABS Speed Sensor ABS Speed Sensor
Front LH Front RH
2 1 2 1
(∗3)
(∗3)
J9
G
R
L
J9 Junction
Junction Connector Connector
BR D BR A
BR D D BR BR A A BR
10 B 28 D 22 D 32 A 22 A 13 D
RSS FL+ FL– FR+ FR– FSS
S 7(A), S 8(B), S 9(C), S10(D)
Skid Control ECU
J 7(A), J 8(B)
Junction Connector
B B BR
B A
(∗3)
(∗3)
W
G
R
B
P
L
B (∗3) (∗3)
A
42 40 43 39 41 44 35 45
PCK2 VCM2 PMC2 PFL PRR E2 VCM1 E1
A2
ABS & BA & TRAC & VSC Actuator
117
PRIUS (EM03Q0U)
TOYOTA Hybrid System
[Details of Skid Control ECU Section] ∗ 3 : Shielded
(IG)
7. 5A
ECU–IG
24 1A
B
Hybrid Vehicle
Control ECU
Connector 3
Stop Light SW
Data Link
Combination
B
J4
Meter
Junction
Connector
B
W
W
R
B
L
32 B 28 B 14 B 22 B 18 B 19 B 7 B
TS D/G STP SP1 CAN–L CAN–H IG1
S 7(A), S 8(B), S 9(C), S10(D)
Skid Control ECU
PCK1 PACC PMC1 PFR PRL GND GND2 GND3 GND4 GND5 GND6
31 A 21 A 30 A 23 A 18 A 1 A 2 B 1 B 2 C 1 C 4 D
W–B
W–B
W–B
W
W
(∗3)
G
R
B
(∗3)
37 46 38 34 36
PCK1 PACC PMC1 PFR PRL
W–B
W–B
GND2 GND1
A2 32 31
ABS & BA & TRAC & VSC
Actuator
W–B
W–B
EF EE
118
PRIUS (EM03Q0U)
System Outline
This system controls the following modes in order to achieve the most efficient operations to match the driving conditions.
1. Motor Generator Condition
(1) Supply of electrical power from the HV battery to motor generator no.2 provides force to drive the wheels.
(2) While the tires are driven by the engine via the planetary gears, motor generator no.1 activates to supply electricity via
the planetary gears to motor generator no.2 to drive the wheels.
(3) When the vehicle is decelerating, kinetic energy from the wheels is recovered into electrical energy and used to
recharge the HV battery by motor generator no.2.
The hybrid vehicle control ECU switches between these modes (1, 2, 1+2, or 3) according to the driving conditions.
However, when the state of charge of the HV battery is low, the HV battery is charged by the engine turning motor generator
no.1.
2. Inverter
∗ The inverter converts high–voltage direct current of HV battery to three–phase alternating current for driving motor
generator no.1 and motor generator no.2.
∗ The activation of the power transistors is controlled by the HV ECU. In addition, the inverter transmits necessary
information for current control, such as the output amperage or voltage, to the HV ECU.
∗ Along with motor generator no.1 and motor generator no.2, the inverter is cooled by the exclusive radiator of the coolant
system that is separated from that of the engine.
∗ In vehicle collision, circuit breaker sensor installed in the inverter outputs collision signal to stop the system.
∗ Boost converter has been adopted in the inverter, which increases rated voltage output from HV battery of DC 201.6V to
DC 500V. After increasing voltage, the inverter converts direct current to alternating current.
3. Converter
The power source for auxiliary equipment of the vehicle such as the lights, audio system, and the air conditioning system, as
well as the ECUs, is based on a rated voltage of DC 12V system. Because the generator outputs at DC 201.6V, the
converter is used to transform the voltage from rated voltage of DC 201.6V to DC 12V in order to recharge the auxiliary
battery. The converter is installed on the underside of the inverter.
4. HV Battery
∗ In Prius, the sealed nickel hydride (Ni–MH) battery has been adopted. This HV battery has high power density, lightweight
and longevity to match characteristics of TOYOTA hybrid system. Because TOYOTA hybrid system controls
charge/discharge to maintain charge/discharge control to maintain SOC (State of charge) at constant level while the
vehicle is operating normally, it does not have to rely on the use of external recharges.
∗ The HV battery, battery ECU, system main relay and the cooling fan are put in a signal case which is placed in the luggage
compartment behind the rear seat to make more effective use of vehicle space.
∗ A service plug that shuts off circuit is provided in the middle of the 28 modules (Rated battery capacity = 201.6V). Before
servicing any portion of the high–voltage circuits, make sure to remove the service plug.
Please do not READY ON when you remove the service plug. There is a possibility that battery ECU breaks down.
∗ To ensure the HV battery’s performance, the battery ECU controls the operation of the cooling fan to avoid the heat that is
generated in the HV battery during charging and discharging.
5. Regenerative System Operation
This system operates the motor as a generator to change the kinetic energy of the vehicle into the electricity when accel
pedal is released or foot braking decelerates the vehicle speed, and store the electricity in the battery.
119
PRIUS (EM03Q0U)
TOYOTA Hybrid System
: Parts Location
Code See Page Code See Page Code See Page
A2 46 H16 C 49 M1 47
A3 46 H17 D 49 M2 A 47
A4 46 H20 D 53 M3 B 47
A6 46 H21 E 53 M4 C 47
A7 A 48 I1 47 M5 D 47
A8 B 48 I2 47 M6 A 47
A9 48 I3 47 M7 B 47
A13 48 I4 47 M8 C 47
A18 48 I5 47 M9 D 47
A25 52 I6 47 M10 E 47
A26 52 I7 47 M13 50
B5 A 48 I8 47 P6 51
B8 48 I9 A 47 P8 51
B9 52 I10 B 47 P11 51
B10 52 I12 D 47 S1 47
B11 A 52 I13 E 47 S2 A 47
B12 B 52 I14 G 47 S3 B 47
B13 C 52 I15 H 47 S4 A 51
B14 52 I16 I 47 S5 B 51
B17 46 I17 53 S7 A 51
B19 48 J1 47 S8 B 51
C1 46 J2 47 S9 C 51
C3 46 J3 47 S10 D 51
C5 A 46 J4 47 S11 51
C6 B 46 J5 50 S16 51
C7 46 J6 50 S22 A 55
C10 49 J7 A 50 S23 B 55
D1 49 J8 B 50 S24 C 55
D7 52 J9 50 S25 D 55
E1 46 J12 A 50 S26 E 55
E4 A 49 J13 B 50 S27 A 47
E5 B 49 J14 50 S28 B 47
E6 C 49 J15 50 T2 47
E7 D 49 J16 50 T3 47
F14 53 J17 50 T4 51
F15 A 28, 53 J18 50 T5 51
F16 B 28, 53 J24 50 T11 51
G1 49 J25 50 W3 47
H14 A 49 J30 53
H15 B 49 J32 53
: Relay Blocks
120
PRIUS (EM03Q0U)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A
30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1C
1D 30 Floor Wire and Driver Side J/B (Lower Finish Panel)
1E
1F 30
1G
Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1L
1M 31
1N
3B
3C 23
3E
Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
3G
3I 24
3J
3M 23 Frame Wire and Engine Room J/B (Engine Compartment Left)
4C
4D
4E
4F
4G
38 Instrument Panel Wire and Center Connector No.1 (Behind the Combination Meter)
4H
4I
4J
4K
4L
5C
5D
5E
5F
5G
5H 42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5J
5K
5L
5M
5N
121
PRIUS (EM03Q0U)
TOYOTA Hybrid System
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
EB1 56 Engine Wire and Engine Room Main Wire (Inside of the Engine Room R/B)
IA1
IA2 58 Engine Room Main Wire and Instrument Panel Wire (Upper Parts of Front Body Pillar LH)
IA3
IC1 58 Engine Room Main Wire and Floor Wire (Cowl Side Panel LH)
ID3
58 Instrument Panel Wire and Floor Wire (Left Kick Panel)
ID4
IF1 58 Floor Wire and Engine Room Main Wire (Left Kick Panel)
IG1
59 Instrument Panel Wire and Instrument Panel No.2 Wire (Behind the Combination Meter)
IG2
II1 59 Engine Wire and Instrument Panel Wire (Behind the Glove Box)
IN1 59 Floor No.2 Wire and Engine Room Main Wire (Right Kick Panel)
IP1 59 Engine Room No.2 Wire and Engine Room Main Wire (Upper Parts of Front Body Pillar LH)
BD1 60 Skid Control Sensor No.1 Wire and Floor Wire (Front Side of Left Quarter Panel)
BE1 60 Frame Wire and Floor No.2 Wire (Front Side of Left Quarter Panel)
BL1 61 Skid Control Sensor No.2 Wire and Floor No.2 Wire (Front Side of Right Quarter Panel)
BM1 61 Floor No.2 Wire and Floor Wire (Rear Side of Right Quarter Panel)
: Ground Points
122
PRIUS (EM03Q0U)
Memo
123
PRIUS (EM03Q0U)
Ignition
12 25
AM2 IG2D
P6
V
Power Source
Control ECU
5 4J 1 4J
B
3 4I 1 4I
W
V
A
Connector
Junction
4 IA1 1 IA3 2 EB1
J2
A
W
W
W
V
B
1 3A 1 3K 1 3I 2 3I 4 3I B
2 1
60A P/I
15A
AM2 IG2
Relay
B
1 2
N1
1 BE1
B
1
Fusible Link Block
120A MAIN
W–B
F15
Battery
EF
124
PRIUS (EM03Q0U)
I1
B
Ignition Coil and
Igniter No. 1
2
1
23
B B B
+B
IGf
IGF
8
3
4
Y Y W–B
IGt
IGT1
GND
B
I2
B
Ignition Coil and
Igniter No. 2
2
1
B B
+B
IGf
E4
9
3
4
W W W–B
IGt
IGT2
GND
B
B
I3
W–B
Igniter No. 3
2
1
B B
+B
IGf
3
4
10
G G W–B
IGt
IGT3
GND
PRIUS (EM03Q0U)
I4
Ignition Coil and
Igniter No. 4
W–B
2
1
B B
+B
IGf
3
4
11
Y Y W–B
IGt
IGT4
GND
W–B W–B
ED
125
Ignition
: Parts Location
Code See Page Code See Page Code See Page
E4 49 I2 47 J2 47
F15 28, 53 I3 47 N1 47
I1 47 I4 47 P6 51
Code See Page Junction Block and Wire Harness (Connector Location)
3A 23
3I Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
24
3K
3M 23 Frame Wire and Engine Room J/B (Engine Compartment Left)
4I
38 Instrument Panel Wire and Center Connector No.1 (Behind the Combination Meter)
4J
: Ground Points
126
PRIUS (EM03Q0U)
Memo
127
PRIUS (EM03Q0U)
Engine Control
GR
GR
GR
B
8 5C
G
R
8 5G
GR
B
7 24
MPX1 MPX2
AM2 IG2D
P6
W
12 35
GR
B
W
V
3 1 3A 1 3K
5 4J 1 4J 2 EB1
2 2
1 1
60A P/I
10A 3 4I 1 4I
ETCS 15A 15A
EFI AM2
B
W
V
1 1
A
2 2
Connector
Junction
4 IA1 1 IA3
J2
A
1 3M
W
W
G
R
V
1 3I 2 3I 8 3I 6 3I 5 3I 4 3I
B
1 BE1
IG2 EFI M
Relay Relay
B
1
120A MAIN
F15
Fusible
Link Block
3 3I 7 3I
W–B
W–B
Battery
EF EE
128
PRIUS (EM03Q0U)
GR GR
GR GR
GR GR
B B
G G
R R
B B
5 3G 1 BF1
(IG) (BAT)
B
7. 5A 10A
C/OPN IGN CHS W/P
Relay
Junction Connector
B
2
B
3
8 3G 7 3G 6 3G 21 1E 15 1F B
J32
B
G
R
B
5 BF1
O
B
11 IF1
1 IN1
2
Containment Valve)
VSV (Fuel Vapor–
4 IA3
G
B
Junction Connector
G
B
V8
1
14 4H 1 4G 2 2 A A A
R
J1
3 1 2 BF1
A A A
R
Relay
B
1 BM1
L 1 IK1
5 2
G
B
4 IJ1
R
2 2 4 EB1
3
BR
4
B
B
L
Coolant Heat Storage
M
Fuel Pump
R
5 2
Water Pump
F14
B
W–B
M
C20
B
7 1
V
W–B
G
W–B
BQ EE
129
PRIUS (EM03Q0U)
Engine Control
GR GR
GR GR
GR GR
G G
R R
B B
W–B
BR
B
L
2 3 4 6 1 9 8
L
SGND VOUT VCC MGND MTRB VLVD VGND
Vent Valve
3 BF1 1 BF2 2 BF2 3 BF2 6 BF1 4 BF2
W–B
BR
R
L
M
7 IM2 11 IM1 13 IM1 Canister 6 IK1 7 IK1 2 IK1
Pressure Sensor Leak Detection Pump
W–B
BR
R
L
V7
Canister Pump Module
3 II1 10 II1 11 II1 26 D 13 D 30 D
VPMP MPMP PPMP
W–B
BR
R
G
R
R
B
1 4 2 3
Mass Air Flow Meter
VSV (Purge)
THA E2G VG
V1
2
+B E2
M1
1 5
B
BR
R BR BR
B B B (∗1)
V BR
G B B
B B
O O
W–B
130
PRIUS (EM03Q0U)
GR
GR GR
GR GR
B
∗ 1 : Shielded
B B
B
1 1 1 1
Injector No. 1
Injector No. 2
Injector No. 3
Injector No. 4
2 2 2 2
I5
I6
I7
I8
GR
G
R
R
Y
R
Y
1 2 5 4 6
WSL1 WSL2 WSAD VC E2
5 EB1 6 EB1
PTNK E2 VCC
2 1 3
BR
Y
L
3 IK1
Y Water Valve
BR
6 10 9
BR BR R R
II1 IM1 IM1
(∗1) (∗1)
BR BR BR
B B
B B
O O
R R
W–B W–B
131
PRIUS (EM03Q0U)
Engine Control
GR GR
GR GR
T2
Throttle Control Motor
2
W
P
Y
L
2 2
Engine Coolant
Temp. Sensor
E E 1 2 3
C19
Connector
E1
VC VTA1 VTA2
Junction
1 1
J14
E E E
BR
Throttle Position
R
R
5 II1
BR
Sensor
7 EB1
R
T3
BR
4
(∗1)
BR
(∗1) (∗1)
BR BR BR BR
B B
B B
O O
R W–B
W–B
132
PRIUS (EM03Q0U)
∗ 1 : Shielded
GR GR
GR GR
B B
B
B
2 2 2 2
IGf IGf IGf IGf
Ignition Coil and
Igniter No. 2
Igniter No. 3
Igniter No. 4
IGt IGt IGt IGt
3 3 3 3
I1
I2
I3
I4
W
G
Y
BR
G
Y
(∗1)
BR
R
Y
2 4E 4 4E
Heated Oxygen Sensor
1 II1
Air Fuel Ratio Sensor
3 4 1 3
(Bank 1 Sensor 1)
(Bank 1 Sensor 2)
AF+ AF– HT OX 12 4I 10 4I
BR
BR
BR
HT +B +B E
H13
A5
1 2 2 4
2 II1
B
BR
BR
BR
(∗1) (∗1)
(∗1) (∗1)
BR BR W–B
O O
W–B
133
PRIUS (EM03Q0U)
Engine Control
P
GR GR
GR GR
(BAT) (IG)
B
30A 7. 5A
RDI ECU–IG
B
B
2 J4
B Junction Connector
2 3B 24 1A
R
W
B
B
B
R 1 3G 2 3G 3 3
1 3
2 5
4 3G 3 3G 3 3 3
W–B
LG
LG
L
L
E
E J9
Junction
Connector
E
P
LG
8 D 14 C
FAN TC
E1 NE+ NE– G2
E 4(A), E 5(B), E 6(C), E 7(D) 28 B 33 A 34 A 26 A
Engine Control Module
BR
BR
A
A A
J14
(∗1)
(∗1)
Junction
G
G
R
A B A B A B A B Connector
Junction Connector
J12(A), J13(B)
A A A A A A A A A A A A 2 2
Position Sensor
Position Sensor
Crankshaft
BR
Camshaft
BR
BR
BR
BR
(∗1)
C7
C1
1 1
(∗1)
W–B
BR
BR
O O
134
PRIUS (EM03Q0U)
P P
GR GR
GR GR
∗ 1 : Shielded
CA1H CA1L
17 18 G1
Gateway ECU
(∗1)
W
B
A13
Accel Position Sensor J18
Junction Connector B A
W
(∗1)
(∗1)
W
W
G
R
B
B
L
27 C 35 C 34 C 33 C 26 C 25 C 8 A 9 A
EP1 EP2 VPA2 VCP2 VPA1 VCP1 CANH CANL
GO NEO
H14(A), H16(C) 13 C 12 C
(∗1)
W
B
W–B
B
BR
BR
BR
BR
LG
O
B
3 4E
2 EA1 1 EA1
11 4I
W
B
2 1 1
Oil Pressure SW
A
BR
J25
O1
Junction
Connector
K1 A
Knock Sensor
(Bank 1) W–B
13 II1
LG
BR
O
BR
BR
BR
BR
O
O
BR
A
O J5
Junction
Connector
EC ED IK
135
PRIUS (EM03Q0U)
Engine Control
P P
GR B
GR
14 4I
3
MPD1 9 II1
2 4D
B
GTX+ GTX– MPD2
GR
G1 6 21 12
Gateway ECU 16 18
Transmission
ID Code Box
MPX2 MPX2
Control ECU
W
B
MPX1 MPX1
T5
T4
17 19
6 5C 7 5C
GR
B
8 II1
6 5E 7 5E 11 4D
B
GR
W 7 4I
W
B
11 4F
4 5
7 4L
B
TX1+ TX1–
15 A
GR
(∗2)
GR
GR
MPX2
M13
Certification ECU
Body ECU
Multi–Display 31
4 5C 13 5G MPX1
B 5(A)
MPX1
(∗3)
17
W
(∗1)
MPX2
S11
W
13 5J 13 5D 9 1G 32
A B
(∗2)
GR
B
J15
B
Junction
Connector
A B 8 5K
16 4L
(∗1)
8 5J
W
14 4K
GR
A A
W
Connector
Junction
11 6
Warning ECU
Tire Pressure
J16
A MPX2+ MPX1
A/C Control
Assembly
MPX+ MPX2
T11
A8
W–B
3 12
Junction Connector
B B
A
B
W
J24
A A
W–B P
W–B
W–B
LG LG
O O
O O
W–B
IH
136
PRIUS (EM03Q0U)
P
(BAT)
∗ 1 : Shielded
∗ 2 : w/ Smart Key System
∗ 3 : w/o Smart Key System (IG) (BAT)
7. 5A
OBD
10A 15A
GAUGE DOME
2 5 1L
1 1M 3
R
V
B
Connector
Junction
16 5L
J6
B
7 5D
R
Y
L
11 5D 13 1A
13 IG2 9 IG2
R
P
16 5H 8 1L
11 5F 13 5H
V
C10 P
Combination Meter 22 21
7 5M 12 5M
(VFD)
Master
G
P
Power D1
Indicator Lamp
TC BAT
BEAN IC
CANH CANL CG SG
6 14 4 5
24 25 26 4 14 9
W–B
BR
W
B
GR
B
BR
G
9 4C
2 IG1 3 IG2 3 5M 10 5M
Y
2 4C 16 4I
G
V
2 5L 10 5N
10 4C 7 4C 4 4C
V
13 4K
7 IA3
B
W–B
BR
9 4E 12 4E 4 4G 15 4H
V
P
LG
BR
28 D 22 D 32 A 22 A 35 B 27 B 31 C 23 C
W–B
W
W
G
R
B
L
II EC
ABS Speed Sensors
137
PRIUS (EM03Q0U)
Engine Control
System Outline
The engine control system utilizes a microcomputer and maintains overall control of the engine, transmission etc. An outline
of the engine control is given here.
1. Input Signals
(1) Engine coolant temp. signal circuit
The engine coolant temp. sensor detects the engine coolant temp. and has a built–in thermistor with a resistance which
varies according to the engine coolant temp. The engine coolant temp. is input into TERMINAL THW of the engine
control module as a control signal.
(2) Intake air temp. signal circuit
The intake air temp. sensor is installed in the mass air flow meter and detects the intake air temp., which is input to
TERMINAL THA of the engine control module as a control signal.
(3) Oxygen sensor signal circuit
The oxygen density in the exhaust emission is detected and is input from the heated oxygen sensors to TERMINAL
OX1B of the engine control module as a control signal.
(4) RPM signal circuit
The camshaft position is detected by the camshaft position sensor, and is input into TERMINAL G2 of the engine control
module as a control signal. Also, the engine RPM is detected by the crankshaft position sensor and the signal is input
into TERMINAL NE+ of the engine control module.
(5) Throttle position sensor signal circuit
The throttle position sensor detects the throttle valve opening angle as a control signal, which is input into TERMINALS
VTA and VTA2 of the engine control module.
(6) Vehicle speed signal circuit
ABS speed sensor detects vehicle speed and the speed signal is input from skid control ECU to engine control module.
(7) Battery signal circuit
Voltage is constantly applied to TERMINAL BATT of the engine control module. When the power SW is pushed on, the
voltage for engine control module starts up power supply which is applied through the EFI M relay, to TERMINAL +B of
the engine control module. The current from the IGN fuse flows to TERMINAL IGSW of the engine control module, and
voltage is constantly applied to TERMINAL +BM.
(8) Intake air volume signal circuit
The intake air volume is detected by the mass air flow meter, and is input to TERMINAL VG of the engine control module
as a control signal.
(9) Water temp. (CHS) signal circuit
The water temp. (CHS) sensor detects the water temp. (CHS) and has a built–in thermistor with a resistance which
varies according to the water temp. (CHS). The water temp. (CHS) is input into TERMINAL THW2 of the engine control
module as a control signal.
(10) Engine knock signal circuit
Engine knocking is detected by the knock sensor, and is input into TERMINAL KNK1 of the engine control module as a
control signal.
(11) Air fuel ratio signal circuit
The air fuel ratio is detected and input into TERMINAL A1A+ of the engine control module as a control signal.
138
PRIUS (EM03Q0U)
2. Control System
∗ SFI system
The SFI system monitors the engine condition through the signals input from each sensors to the engine control module.
The control signal is sent to the engine control module TERMINALS #10, #20, #30 and #40 to operate the injector (Fuel
injection). The SFI system controls the fuel injection with the engine control module according to the driving conditions.
∗ ESA system
The ESA system monitors the engine condition through the signals input from each sensors to the engine control module.
The best ignition timing is decided according to this data and the data stored in the engine control module. The control
signal is output to TERMINALS IGT1, IGT2, IGT3 and IGT4, and these signals control the igniter to provide the best
ignition timing.
∗ Heater control system of heated oxygen sensor
The heater control system of heated oxygen sensor turns the heater on when the intake air volume is low (Temp. of
exhaust emission is low), and warms up the heated oxygen sensors to improve their detecting performance. The engine
control module evaluates the signals from each sensors, and outputs current to TERMINAL HT1B to control the heater.
∗ Heater control system of air fuel ratio sensor
The heater control system of air fuel ratio sensor turns the heater on when the intake air volume is low (Temp. of exhaust
emission is low), and warms up the air fuel ratio sensor to improve detecting performance of the sensor.
The engine control module evaluates the signals from each sensor, current is output to TERMINAL HA1A, controlling the
heater.
∗ Fuel pump control system
The engine control module supplies current to TERMINAL FC, and controls the operation of the fuel pump with the C/OPN
relay.
∗ VVT–i
VVT–i controls the intake camshaft to optimal valve timing in accordance with the engine condition.
∗ CHS system
Engine control module controls CHS W/P relay to run electric pump to supply heated water stored in CHS tank to engine
head. The electric pump stops when the water reaches certain temperature or certain time goes by. Warming engine head
optimizes combustion conditions at engine start to reduce emission of incomplete combustion gas.
3. Diagnosis System
When there is malfunction in the engine control module signal system, the malfunctioning system is recorded in the memory.
The system can be found by reading the code displayed on the malfunction indicator lamp.
4. Fail–Safe System
When malfunction has occurred in any system, there is possibility of engine trouble due to continuous control based on that
system. In such a case, the fail–safe system either controls the system using the data (Standard values) recorded in the
engine control module memory, or stops the engine.
139
PRIUS (EM03Q0U)
Engine Control
: Parts Location
Code See Page Code See Page Code See Page
A5 46 I1 47 J25 50
A8 48 I2 47 J32 53
A13 48 I3 47 K1 47
B5 A 48 I4 47 M1 47
C1 46 I5 47 M13 50
C2 46 I6 47 O1 47
C7 46 I7 47 P6 51
C10 49 I8 47 S7 A 51
C19 46 J1 47 S8 B 51
C20 46 J2 47 S9 C 51
D1 49 J4 47 S10 D 51
E1 46 J5 50 S11 51
E4 A 49 J6 50 T2 47
E5 B 49 J9 50 T3 47
E6 C 49 J12 A 50 T4 51
E7 D 49 J13 B 50 T5 51
F14 53 J14 50 T11 51
F15 28, 53 J15 50 V1 47
G1 49 J16 50 V6 55
H13 49 J17 50 V7 55
H14 A 49 J18 50 V8 55
H16 C 49 J24 50 W5 47
: Relay Blocks
140
PRIUS (EM03Q0U)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A 30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1E
1F 30
1G Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1L
31
1M
3A
23
3B
3G Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
3I 24
3K
3M 23 Frame Wire and Engine Room J/B (Engine Compartment Left)
4C
4D
4E
4F
4G
38 Instrument Panel Wire and Center Connector No.1 (Behind the Combination Meter)
4H
4I
4J
4K
4L
5C
5D
5E
5F
5G
5H 42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5J
5K
5L
5M
5N
141
PRIUS (EM03Q0U)
Engine Control
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
EA1 56 Engine Wire and Engine No.4 Wire (Near the Radiator Fan)
EB1 56 Engine Wire and Engine Room Main Wire (Inside of the Engine Room R/B)
IA1
58 Engine Room Main Wire and Instrument Panel Wire (Upper Parts of Front Body Pillar LH)
IA3
IF1 58 Floor Wire and Engine Room Main Wire (Left Kick Panel)
IG1
59 Instrument Panel Wire and Instrument Panel No.2 Wire (Behind the Combination Meter)
IG2
II1 59 Engine Wire and Instrument Panel Wire (Behind the Glove Box)
IJ1 59 Engine Room Main Wire and Instrument Panel Wire (Behind the Glove Box)
IK1 59 Engine Room Main Wire and Floor No.2 Wire (Cowl Side Panel RH)
IM1
59 Instrument Panel Wire and Floor No.2 Wire (Right Kick Panel)
IM2
IN1 59 Floor No.2 Wire and Engine Room Main Wire (Right Kick Panel)
BE1 60 Frame Wire and Floor No.2 Wire (Front Side of Left Quarter Panel)
BF1
60 Floor No.2 Wire and Fuel Tank Wire (Near the Fuel Tank)
BF2
BM1 61 Floor No.2 Wire and Floor Wire (Rear Side of Right Quarter Panel)
: Ground Points
142
PRIUS (EM03Q0U)
Memo
143
PRIUS (EM03Q0U)
144
G G
E B
E A
(∗2) (∗2)
J 7(A), J 8(B)
Junction
Connector
2
2
1
G G
3
3
IJ3
Headlight
(∗1)
W
40A
3
5
1
MAIN
HEAD
3
Y
IJ3
2
W 3 3B
(BAT)
H–LP
Relay
V
(∗4)
10A H–LP HI RH
Shade Actuator
2
1
W–B V
3
3
2 B
1 B
Y
EA
(∗3) (∗3)
W–B
1 A
2 A
(∗3)
Headlight Control
DIM
Relay
ECU
L(∗3)
2
1
H 5(A), H 6(B)
3
3
2
1
5
3
O(∗3) W
3
3
3
3
V(∗4)
PRIUS (EM03Q0U)
2
1
L(∗3) L(∗4)
3
3
3
L(∗4)
P(∗3)
3
L(∗4)
DRL
7. 5A
2
1
2
1
W(∗1) P B(∗1)
2
2
3
3
(∗1)
5
3
W–B W–B BR
2
2
EE
(∗1) (∗1)
Relay
RR FOG
G
BR
(∗3)
(∗1)
W–B
W–B
L(∗4)
L(∗4)
V(∗4)
V(∗4)
P(∗3)
DRL NO. 4
O(∗3)
W(∗1)
(BAT)
BR D2
Daytime Running Light Relay 15A
(∗1) ECU–B
DRL E IG +B
1 2 12 3 5 1K
W–B
(∗1)
(∗1)
(∗1)
(∗1)
BR
SB
Y
9 IA1 2 IA1
Connector
(∗1)
(∗1)
BR
BR
Junction
J19
J11 D
Junction
A Connector A
Y
A A
10 5K
(∗1 ∗4)
(∗1 ∗4)
BR
BR
7 5A
3 3
Headlight RH
Headlight LH
SB(∗1)
H7
H8
W–B
1 2 1 2
(∗1)
(∗2 ∗4)
∗
V(∗4)
V(∗4)
L(∗4)
L(∗4)
W–B
W–B
3 : HID Type
∗ 4 : Except HID Type
11
W(∗1)
IA3
L(∗4)
L(∗4) O(∗3)
V(∗4) 1 B 2 A
O(∗3)
Headlight Control
Shade Actuator
Headlight Assembly LH
H 3(A), H 4(B)
ECU
V(∗4)
W–B W–B
2 B 1 A
W–B(∗3)
W–B(∗3)
Y Y
G G
W–B
(∗3)
EB
145
PRIUS (EM03Q0U)
Headlight
PWM1 DRL/DIM HRLY HON HEAD CLTB CLTS CLTE AUTO HU HF GND
3 B 2 C 20 C 12 B 3 C 16 B 15 B 14 B 18 A 8 22 C 1
4 1I
(∗1)
(∗1)
(∗1)
(∗1)
W
G
R
B
B
(∗1)
SB
G
Y
28 1E 17 1E
P
18 IG2 19 IG2 20 IG2
7 4F 10 4F 9 4F
(∗1)
(∗1)
(∗1)
W
R
B
2 4F 3 4F
W–B
BR
1 4 3
CLTB CLTS CLTE 2 4B 10 4B 4 4B
9 4I 8 4I
(∗1)
G
V
A24
Automatic Light
Control Sensor
G
Y
R
R
B
19 20 11 17
OFF
14 4F 1 4B
Control SW
Tail
Light
SB(∗1) Head
AUTO
5 4G
Combination SW
Low
Dimmer SW
High
W
C11
Flash
Junction Connector
12
2
E
W(∗1) E
Diode
J19
D3
E 1
G
W
9 4B
14 4G
BR
Y
W–B
IH
146
PRIUS (EM03Q0U)
B 5(A), B 6(B), B 7(C)
Body ECU
SIG ECUB
5 6
10A 7. 5A 15A
GAUGE ECU–IG DOME
1 1M 30 1A 3
P
V
16 5L
16 5H 8 1L
R
L
7 5D
11 5D 13 1A
B
V
R B B
13 IG2 9 IG2
J6
Junction
V
Connector
22 21
Head (USA)
Beam
C10
(VFD) Combination
Meter
Power Supply
Circuit BEAN IC
14 24 25
GR
BR
4 4C 2 4C 13 5D
15 4H 13 4K 13 5G
BR
GR
II
147
PRIUS (EM03Q0U)
Headlight
∗ 5 : w/ Smart Key System
∗ 6 : w/o Smart Key System
MPX1 MPX2
17 15 A
9 1G
S 8(B), S 9(C)
Control ECU
Skid
PKB CAN–L CAN–H
14 C 18 B 19 B 7 4I
GR
GR
B
(Shielded)
8 5K 11 4F
8 II1 7 4L
B
R
8 5J 11 4D
GR
(∗5)
GR
GR
Certification ECU
11 17 19 B 31
Connector
Junction
Transmission
ID Code Box
J9
(∗6)
B
W
MPX+ MPX2 MPX2 (Shielded) MPX2
S11
A8
T5
T4
B
3 16 18 32
R
GR
B
(∗5)
B
B
13 5J 2 4D
Parking Brake SW
9 II1
4 5C 14 4I
16 4L
P2
B
GR
12
Gateway ECU
MPD2 14 4K
3 17 18
Tire Pressure Warning ECU
W
GR
J17
Junction
8 5C Connector
A A B 6
Connector
Junction
MPX1
(Shielded)
J15
A
8 5G
W
B
A B
MPX2
T11
12
(Shielded)
Power Source Control ECU
W
B
24
(Shielded)
B A
Connector
MPX2
Junction
J18
W–B
MPX1
B A
P6
7
A W A A
Connector
Junction
J16
GR B Junction
J25
Connector
A A
B
W–B A A W–B
W–B
J24
IH Junction Connector
148
PRIUS (EM03Q0U)
System Outline
Daytime Running Light Function (Canada)
When power SW is at IG ON position and the vehicle is ready to drive (READY lamp on the display in combination meter is
on), releasing parking brake makes signal go into TERMINAL PKB of body ECU. In this condition, when light control SW is at
Off/Tail/AUTO position (Headlight is not lit), body ECU sends daytime operation request from TERMINAL DRL/DIM to
daytime running light relay. As a result, daytime running light relay duty–operates headlights (Dimmer than regular lighting)
: Parts Location
Code See Page Code See Page Code See Page
A8 48 H5 A 46 J18 50
A24 48 H6 B 46 J19 50
B5 A 48 H7 46 J24 50
B6 B 48 H8 46 J25 50
B7 C 48 J6 50 P2 51
C10 49 J7 A 50 P6 51
C11 49 J8 B 50 S8 B 51
D2 49 J9 50 S9 C 51
D3 49 J11 50 S11 51
G1 49 J15 50 T4 51
H3 A 46 J16 50 T5 51
H4 B 46 J17 50 T11 51
: Relay Blocks
Code See Page Junction Block and Wire Harness (Connector Location)
1A 30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1E
1G 30
1I
Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1K
1L 31
1M
3B 23 Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
4B
4C
4D
4F
4G 38 Instrument Panel Wire and Center Connector No.1 (Behind the Combination Meter)
4H
4I
4K
4L
5A
5C
5D
5G
42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5H
5J
5K
5L
149
PRIUS (EM03Q0U)
Headlight
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA1
58 Engine Room Main Wire and Instrument Panel Wire (Upper Parts of Front Body Pillar LH)
IA3
IG1
59 Instrument Panel Wire and Instrument Panel No.2 Wire (Behind the Combination Meter)
IG2
II1 59 Engine Wire and Instrument Panel Wire (Behind the Glove Box)
IJ3 59 Engine Room Main Wire and Instrument Panel Wire (Behind the Glove Box)
: Ground Points
150
PRIUS (EM03Q0U)
Memo
151
PRIUS (EM03Q0U)
Headlight Beam Level Control
(BAT)
B 7(C) 40A
Body ECU HEAD
MAIN
V
2
GND HEAD HRLY
1 3 C 20 C 3 3B
W
17 1E 28 1E W
D1
Data Link P
Connector 3
BR
G
B 8 1F
3 3
14 4G 14 4F 3 4F
OP3
5 1 8 1G
8
H–LP Relay
9 4B 1 4B 8 4I
V
B
G
G
R
3 2 7 5K
11 5M
12 20 2 IJ3 3
7 5N
EL T H
11 5N
Control SW
OFF G
P
E E
B
Light
Tail B A E
Connector
Junction
Head E
J10
12 IA3 7 IJ3 17 IJ3
A
C11 E
Combination SW J 7(A), J 8(B)
Junction
G
L
Connector
10 9 1 12 11
HDLP PRST IG SPDR WNG
H12
Headlight Beam Level Control ECU
LH2 LH1 LH3 RH2 RH1 RH3 SGR SHR SBR E1
4 14 23 3 13 22 20 5 2 24
W–B
Y
P
L
BR
LG
W
G
R
P
L
2 3 1 2 3 1 1 2 3
LH 1 LH 3 LH 4 RH 1 RH 3 RH 4 SHG SHRL SHB
H1 H2 H18
Headlight Beam Headlight Beam Height Control Sensor
Level Control Level Control
W–B
Actuator LH Actuator RH
A
J5
Junction
Connector
IH IK
152
PRIUS (EM03Q0U)
(IG) (BAT)
10A 15A
GAUGE DOME
19
V
1A 2
3
1 1M
V
R
P
P
V
B
J6
Junction
Connector
16 5N 9 5K 16 5L 16 5H B
R
9 5D 12 5D 7 5D 11 5D
13 1A
W
P
L
5 IG2 16 IG2 13 IG2 9 IG2
8 1L
P
V
Y
L
10 13 22 21
Power
Supply
Circuit
9 C10 14
Combination Meter
V
BR
10 IG1
4 IG1
Y
9 4C
G
4 4C
16 4I
S 7(A), S 8(B), S 9(C), S10(D)
22 B Skid Control ECU
V
SP1 15 4H
W
G
R
V
B
L
BR
II
153
PRIUS (EM03Q0U)
Headlight Beam Level Control
System Outline
This system adjusts the illuminating angle from changes in the vehicle height and axle distance, based on the information of
the vehicle height detected by the height sensors installed at the rear of the vehicle and on information of the vehicle speed
and acceleration output from the VSC system which operates the reflector with the obtained illuminating angle through
actuators in order to always keep the beam axis constant.
If an error occurs in this system, the headlight beam level control warning light in the combination meter lights up and
warning buzzer goes on to warn the driver.
: Parts Location
Code See Page Code See Page Code See Page
B7 C 48 H12 49 J10 50
C10 49 H18 53 S7 A 51
C11 49 J5 50 S8 B 51
D1 49 J6 50 S9 C 51
H1 46 J7 A 50 S10 D 51
H2 46 J8 B 50
: Relay Blocks
Code See Page Junction Block and Wire Harness (Connector Location)
1A 30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1E
1F 30
1G Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1L
31
1M
3B 23 Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
4B
4C
4F
38 Instrument Panel Wire and Center Connector No.1 (Behind the Combination Meter)
4G
4H
4I
5D
5H
5K
42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5L
5M
5N
154
PRIUS (EM03Q0U)
: Ground Points
155
PRIUS (EM03Q0U)
Automatic Light Control
2 2 2
3 3B
W 3 1 3D
W
W
B 1 1B
J6
Junction
3 3 Connector
B
1 5
T–LP Relay
H–LP
Relay
R
2 3
3 3
30 1A
B
6 19 5
ECUB TRLY SIG
B 5(A), B 6(B), B 7(C)
Body ECU
G
28 1E 17 1E 3 1L
W
R
W–B
BR
LG
W
G
3 4F 7 4F 14 4G 11 5H
W
G
1 4 3
CLTB CLTS CLTE 8 4I 2 4B 9 4B 8 5M
A24
W
G
Automatic Light
Control Sensor
7
SIL
19 12
OFF
Control SW
Tail D1
Data Link
Connector 3
Light
Head
W–B
AUTO
C11
Combination SW
IH
156
PRIUS (EM03Q0U)
System Outline
The automatic light control system works when the light control SW is turned to AUTO. The automatic light control sensor
detects the brightness around the vehicle. By this function, the system automatically turns on the taillight and headlight if the
brightness is below the certain level and turns off the taillight and headlight when the surroundings become brighter than the
certain level.
: Parts Location
Code See Page Code See Page Code See Page
A24 48 B7 C 48 J6 50
B5 A 48 C11 49
B6 B 48 D1 49
: Relay Blocks
Code See Page Junction Block and Wire Harness (Connector Location)
1A
30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1B
1E 30
Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1L 31
3B
23 Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
3D
4B
4F
38 Instrument Panel Wire and Center Connector No.1 (Behind the Combination Meter)
4G
4I
5H
42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5M
: Ground Points
157
PRIUS (EM03Q0U)
Front Fog Light
(BAT) (BAT)
1 1B
15A 100A
FR FOG DC/DC
2 2
T–LP Relay
3 1 3D
10A
TAIL
W
G
33 1A
BR
B
Connector
Junction
J11
B 17 A
FFOG
Body ECU
BR
B 5(A)
LIB1
2 2 13 A
SB
3 1
FR FOG
12 4F
Relay
5 2 10 IA3
14 4B
2 2
SB
Y C11
Combination SW 4
Low
Dimmer SW
LG
High
Flash
Off
Fog SW
On
12 16 3
D A D A
G
O
L
J 7(A), J 8(B)
Connector
9 4B 5 4B
Junction
F B
14 4G 15 4B
LG
LG
BR
2 2
Front Fog
Front Fog
Light RH
Light LH
28 1E
F3
F4
1 1
17 1E
W–B
W–B
W–B
EE EA IH
158
PRIUS (EM03Q0U)
: Parts Location
Code See Page Code See Page Code See Page
B5 A 48 F4 46 J11 50
C11 49 J7 A 50
F3 46 J8 B 50
: Relay Blocks
Code See Page Junction Block and Wire Harness (Connector Location)
1A
30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1B
1E 30 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
3D 23 Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
4B
4F 38 Instrument Panel Wire and Center Connector No.1 (Behind the Combination Meter)
4G
: Ground Points
159
PRIUS (EM03Q0U)
Light Auto Turn Off System
3 3B 3 1 3D
SIL
D1
7
W
W
W
B Connector 1 1B
Junction
8 5M
3 3
J6
B
1 5
T–LP Relay
H–LP 11 5H
Relay
R
2 3
LG
3 3
30 1A 3 1L
B
(∗2)
G
6 19 5 21 18
ECUB TRLY SIG ACC OBD2
B 5(A), B 7(C)
J 7(A), J 8(B)
E A
Body ECU
Connector
(∗1)
Junction
28 1E 17 1E 21 1D 24 1D 5 1D 20 1D
W–B
(∗1)
BR
BR
W
G
R
B
2 IJ3
3 4F 7 4F 14 4F 8 4F 14 4G
G
5 ID2 4 ID2
V
8 4I 2 4B 1 4B 3 4B 9 4B
BR
3 IM1 4 IM1
(∗1)
G
G
R
19 20 18
OFF 1 1 1 1
Control SW
Tail
Light
Head
D10
D7
D8
D9
W–B
AUTO
C11 12
Combination SW
∗ 1 : w/ Daytime Running Light
∗ 2 : w/o Daytime Running Light
IH
160
PRIUS (EM03Q0U)
(BAT)
15A
DOME
R
B
B J6
Junction
Connector
R
13 1A
8 1L
P
B 5(A), B 7(C)
Body ECU 16 5H
9 5I
PRG RDA
24 C 23 C
R
W
G
R
V
3 2 5
Door Control Receiver
PRG RDA +B
D4
GND
1
W–B
A
J30
Junction
Connector
A
W–B
BL
161
PRIUS (EM03Q0U)
Light Auto Turn Off System
System Outline
∗ When the other lamps than headlights are lit under ’TAIL’ or ’AUTO’ condition of the light control SW, the taillights and front
fog lights are turned OFF if the power SW is changed from ’IG ON’ to ’IG OFF’, and the driver side door is opened from
closed condition.
∗ When the headlamps are lit under ’HEAD’ or ’AUTO’ condition of the light control SW, if the power SW is changed from ’IG
ON’ to ’IG OFF’, and all the doors are closed from open condition or under all the door locked condition, operating the
wireless door lock function turns OFF the headlights, taillights and front fog lights.
: Parts Location
Code See Page Code See Page Code See Page
B5 A 48 D7 52 J7 A 50
B7 C 48 D8 52 J8 B 50
C11 49 D9 52 J30 53
D1 49 D10 52
D4 52 J6 50
: Relay Blocks
Code See Page Junction Block and Wire Harness (Connector Location)
1A
30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1B
1D 30 Floor Wire and Driver Side J/B (Lower Finish Panel)
1E 30
Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1L 31
3B
23 Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
3D
4B
4F
38 Instrument Panel Wire and Center Connector No.1 (Behind the Combination Meter)
4G
4I
5H
5I 42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5M
: Ground Points
162
PRIUS (EM03Q0U)
Memo
163
PRIUS (EM03Q0U)
Turn Signal and Hazard Warning Light
(BAT) (IG)
10A 10A
HAZ GAUGE
3
B
32 1A
4 1
+B IG
Flasher Relay
GND EHW EL ER LL LR
7 8 5 6 3 2
17 1E 28 1E 12 1E 17 1L 11 1L 12 1L 14 1A 31 1A
W–B
W–B
BR
G
Y
Y
7 4A 1 4A 2 4A
A D
Connector
Connector
Junction
Junction
J4
J2
12 4A 6 4B 8 4B A D
GR
LG
LG
G
Y
15 13
3
TL EL TR 2 2
Hazard SW
Turn SW LH
H11
RH 1 1
F7
F8
2
C11 12
Combination SW
W–B
BR
BR
W–B
W–B
14 4G 15 4G 11 4A 9 4B
W–B
IH EE EA
164
PRIUS (EM03Q0U)
5
3
W–B Y
27 1D
Turn
R9
Rear Combination Light LH
5
3
W–B G
28 1D
BN
Turn
R10
Rear Combination Light RH
Turn LH
14
19
G BR Y L G
13 1L
3 4A
4 4C
11 4C
4 IG1
12 IG1
15 4H
Turn RH
PRIUS (EM03Q0U)
18
G LG G 16 1L
6 4A
14 4C
15 IG1
BR
II
C10
Combination Meter
165
Turn Signal and Hazard Warning Light
: Parts Location
Code See Page Code See Page Code See Page
C10 49 F8 46 J4 47
C11 49 H11 49 R9 54
F7 46 J2 47 R10 54
: Relay Blocks
Code See Page Junction Block and Wire Harness (Connector Location)
1A 30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1D 30 Floor Wire and Driver Side J/B (Lower Finish Panel)
1E 30
Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1L 31
4A
4B
4C 38 Instrument Panel Wire and Center Connector No.1 (Behind the Combination Meter)
4G
4H
: Ground Points
166
PRIUS (EM03Q0U)
Memo
167
PRIUS (EM03Q0U)
168
ACC
7. 5A
(ACC)
Interior Light
7. 5A
ECU–IG
(IG)
5
SIG
Body ECU
B 5(A), B 7(C)
21
ACC
A
A
A
A
7
8
W–B W–B W–B W–B LG LG
25 C
IH
5 IE2
15 IE1
LSWD
10
A
A
A
A
8
7
W–B W–B W–B W–B Y Y
10 C
PRIUS (EM03Q0U)
IL2
IL1
LSWP
9
6
W–B W–B O O O
7 4K
BL
16 ID3
17 BB1
4 BB1
D14
Door Unlock Detection SW Rear LH
A
A
9
6
15 4F
6 4K
BQ
14 IM1
17 BJ1
4 BJ1
LSWR
J32 D15
Junction Door Unlock Detection SW Rear RH
Connector
B 5(A), B 7(C)
Body ECU
MPX1 MPX2
17 15 A
9 1G
∗ 1 : w/ Smart Key System
B
∗ 2 : w/o Smart Key System
GR
Power Source Control ECU
8 5K 11 4F
8 5J 11 4D
MPX1 MPX2
P6
GR
7 24
A/C Control Assembly
B
11 18 17
GR
Transmission
ID Code Box
B
Control ECU
13 5G 8 5G MPX+ MPX1 MPX2
A8
T4
T5
3 19 16
GR
GR
B
B
13 5D 8 5C
13 5J 2 4D
GR
P
8 II1
4 5C 14 4I
GR
GR
B
12
Gateway ECU
MPD2 7 4I
9 II1
MPD1
G1
3 7 4L
GR
(∗1)
GR
Certification ECU
31
MPX1
(∗2)
W
MPX2
S11
32
(∗1)
B
16 4L
14 4K
W
169
PRIUS (EM03Q0U)
P
W
170
A
A
1
2
23
W–B W–B R
BL
7 1D
BCTY
Interior Light
J30 L3
Junction Luggage Compartment Courtesy SW
Connector
7
18
W LG
3 1L
11 5H
8 5M
SIL
OBD2
D1
Data Link Connector 3
Body ECU
B 5(A), B 7(C)
1
26
V
21 1D
DCTY
D7
Door Courtesy SW Front LH
1
20
BR BR BR
24 1D
5 ID2
3 IM1
PCTY
D8
PRIUS (EM03Q0U)
Door Courtesy SW Front RH
1
22
R
5 1D
RCTY
D9
Door Courtesy SW Rear LH
1
R R R
20 1D
4 ID2
4 IM1
D10
Door Courtesy SW Rear RH
P
W
B 5(A), B 7(C)
Body ECU
L
30 1A 15A
DOME
R
2
R R
3
R
B 17 IE1 17 IL1
B J6
Junction
Connector 4 4F
B
L
9 IG2
16 4K
Y
W
13 1A 5 1O 21 ID3 1 1
Front RH
Front LH
D5
D6
W
Door
8 1L 7 1F 1
Compartment Light
P
L
11 5D 16 5H
Luggage
R
L5
2
BEAN
Combination
IC 1 5G
Junction Connector
Meter
R
C10
24 25 14
D
B
GR
BR
2 IG1 D
3 IG2 4 IG1
W
2 4C
R
3 ID3
13 4K
G
R
B
A A A A A
12
Warning ECU
Tire Pressure
MPX2
J23
4 4C Junction Connector
MPX1 R
T11
6
W
15 4H
P
BR
II
171
PRIUS (EM03Q0U)
Interior Light
B 5(A), B 7(C)
Body ECU
GND ILL
1 7
17 1E 1 1O 2 1O 27 1E J33
Junction Connector
R B
R
B B B
R
W–B
W–B
Vanity Light RH
Vanity Light LH
B
L
1 1
V2
V3
2 2
2 4G
W
1
2 2
Vanity Light SW RH
Vanity Light SW LH
2 4J 6 4L
Overhead J/B
DOOR
R
B
B
L
1 1
O3
V4
V5
7 IB1 3 4
1 6
W–B
W–B
W–B
Key Slot
K3
DOOR
Interior Light
B A A A
OFF
2
ON
I18
3 2 A J33
Junction Connector
W–B
W–B L
R
6 IB1
W–B
8 4K
4 4H
W–B
R
A
J25
Junction
W–B
Connector
A
W–B
IH IH
172
PRIUS (EM03Q0U)
System Outline
Interior light operates with control of body ECU.
Illumination Control
Lighting function of interior light, overhead J/B, electrical key holder
When any door is opened, signal is sent from door courtesy SW to body ECU. Interior light, overhead J/B and key slot light
on gradually from unlit condition to fully lit condition within 1.5 seconds if lighting SW of interior light and overhead J/B is set
for door.
After that, when all the doors are shut and any one of the door is unlocked, interior light, overhead J/B and key slot are lit up
for about 15 seconds (Timer lighting) and then are lit off gradually.
Under conditions that power SW is set at OFF position and all the doors are closed, when any one of the door is unlocked,
interior light, overhead J/B and key slot light on gradually from unlit condition to fully lit condition within 1.5 seconds, stay on
for the certain time (Timer lighting) and then light off gradually. If power SW is turned from OFF position to ACC ON or IG ON
position during timer lighting, the timer lighting function is cut off immediately and the light goes off gradually.
Even though timer lighting conditions are satisfied when power SW is at ACC ON or IG ON position, the light does not stay
on for certain time (For 15 sec.) after lighting, but goes off gradually.
All the doors are locked during timer lighting, the timer lighting function is cut off immediately and the light goes off gradually.
: Parts Location
Code See Page Code See Page Code See Page
A8 48 D15 52 L3 53
B5 A 48 G1 49 L5 53
B7 C 48 I18 53 O3 54
C10 49 J6 50 P6 51
D1 49 J23 50 S11 51
D5 52 J24 50 T4 51
D6 52 J25 50 T5 51
D7 52 J26 53 T11 51
D8 52 J27 53 V2 55
D9 52 J30 53 V3 55
D10 52 J31 53 V4 55
D12 52 J32 53 V5 55
D13 52 J33 53
D14 52 K3 50
: Relay Blocks
173
PRIUS (EM03Q0U)
Interior Light
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A 30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1D 30 Floor Wire and Driver Side J/B (Lower Finish Panel)
1E
1F 30
Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1G
1L 31
1O 30 Roof Wire and Driver Side J/B (Lower Finish Panel)
4C
4D
4F
4G
4H 38 Instrument Panel Wire and Center Connector No.1 (Behind the Combination Meter)
4I
4J
4K
4L
5C
5D
5G
5H 42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5J
5K
5M
: Ground Points
174
PRIUS (EM03Q0U)
Memo
175
PRIUS (EM03Q0U)
Taillight and Illumination
B
GR
1 1M 3 1 3I
18 16
ID Code Box
MPX2 MPX2
R
4 IA1
B MPX1 MPX1
Connector
T4
T5
Junction
19 17
V
W
J6
B
B
P 3 4I
GR
11 4D
R
8 II1
16 5L 16 5H 13 1A
8 4J 5 4J 11 4F
GR
W
R
B
7 5D 11 5D 8 1L
7 4I 33 12 15 A
B 5(A), B 7(C)
Power Source
AM1 AM2 MPX2
Control ECU
Y
Body ECU
P
7 36 24 17
V
(∗1)
GR
9 1G
22 21
Certification ECU
31
GR
B
MPX1
(∗2)
W
8 5G 8 5K
MPX2
S11
GR
G
(Canada)
32
8 5C 8 5J
Tail
(∗1)
B
Power
Supply
GR
GR
Circuit
Combination Meter
16 4L
MPD1 MPX2+
Power SW
C10
14 4K
BEAN IC
MPD2 MPX+
P11
G1
A8
Tire Pressure Warning ECU
1 12 3
W
14 28 29 25 24
W–B
GR
6
GR
BR
SB
A
Connector
MPX1
Junction
13 5G 13 5J
J25
MPX2
T11
R
B
2 13
4C 4K
P
4 4C
15 4H B
W–B
BR
II
176
PRIUS (EM03Q0U)
L
(BAT)
G
100A G
DC/DC
GR
2
BR
1 3D
GR
BR
G
G
L
W
1 1B 6 1M 8 1M 9 1M 7 1N 10 1E
∗ 1 : w/ Smart Key System
∗ 2 : w/o Smart Key System
T–LP
Relay 7. 5A 10A
PANEL TAIL
19
TRLY
B 5(A), B 7(C)
Body ECU 33 1A 15 1A 29 1D 10 1D
TAIL BR
BR
BR
21 C
B E E
Connector
Connector
Junction
Junction
R
J11
J31
8 4F B E E
BR
BR
3 4B
1 BH1 2 BH1
Y
BR
BR
BR
BR
18 BR
BR
T H EL
5 BK2 9 BK2
OFF
Control SW
Tail
Light
BR
BR
Head
Front Side Marker Light RH
C11 1 1
12
2 2 2 2
License Plate Light RH
Combination SW
License Plate Light LH
Tail
Tail
G
1 1 1 1
5 5
9 4B 28 1E
W–B
W–B
R10
R9
F5
F6
L1
L2
BR
A
Connector
Junction
14 4G 17 1E A
J34
A
W–B
W–B
W–B
W–B
W–B
W–B
R R
B B
W–B
IH EF EA BN BO
177
PRIUS (EM03Q0U)
Taillight and Illumination
L L
G G
G GR
GR
BR
GR
GR
G
G
16 5K 13 5K 4 5K 6 5M 12 5L
12 4H
2 5A 1 5F 8 5A 12 5B 12 4C
GR
GR
LG
G
G
13 IG1
2 2 2 12 4
Position Sensor
G
Shift Lever
Main SW
Glove Box Light
M11
2
S4
Warning Light
1 1 DIM
G2
ILL–
F11
1
4
W–B
W–B
W–B
Illumination
Y
Combination SW
C12
5 5A 14 5F 9 5A 14 IG1
BR
6 5L 15 5D 1 5L
13 4C
W–B
W
R
5 4H
A
Connector
Junction
W–B
J24
A
W
W–B
W–B
B B
W–B W–B
IH
178
PRIUS (EM03Q0U)
L
GR
C
Connector
Junction
J19
C C C
L
G
(IG) 3 5B 16 4G
7. 5A
ECU–IG
5 5E 13 4A
7 1L
O
(∗4)
(∗4)
(∗3)
(∗3)
GR
G
R
R
15 5H
14 5M
L
12 A (∗5)
5 10 1 B (∗6) 6 C 10 A R 3(A), R 4(B), R 5(C) 6 C 2 A 4
Radio and Player
Hazard SW
R 5(C), R 6(A)
Rheostat
H11
TC E RV ILL– ILL– GND ILL– GND
R7
8 3 2 11 A (∗5) 5 B 7 A 12 A 20 A 1
2 B (∗6)
W–B
W–B
W–B
W–B
(∗4)
(∗4)
(∗3)
(∗3)
GR
BR
BR
SB
16 5M 5 5M 4 5M 14 5E 5 5E 10 4A
8 5D 5 5L 3 5L 4 5L 16 4H
W–B
W–B
W–B
W
B
(∗4)
(∗3)
BR
BR
A D
W–B A J25 ∗ 3 : Separate Amplifier J20
Junction ∗ 4 : Built–in Amplifier Junction
Connector ∗ 5 : w/ Television Camera Connector
A ∗ 6 : w/o Television Camera D
B
W–B
BR
W–B
II
179
PRIUS (EM03Q0U)
Taillight and Illumination
: Parts Location
Code See Page Code See Page Code See Page
A8 48 J11 50 P11 51
B5 A 48 J19 50 R3 A 51
B7 C 48 J20 50 R4 B 51
C10 49 J24 50 R5 C 51
C11 49 J25 50 R6 A 51
C12 49 J31 53 R7 51
F5 46 J34 53 R9 54
F6 46 L1 53 R10 54
F11 49 L2 53 S4 51
G1 49 M11 50 S11 51
G2 49 A 50 T4 51
M13
H11 49 B 50 T5 51
J6 50 P6 51 T11 51
: Relay Blocks
180
PRIUS (EM03Q0U)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A
30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1B
1D 30 Floor Wire and Driver Side J/B (Lower Finish Panel)
1E
30
1G
1L Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1M 31
1N
3D 23
Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
3I 24
4A
4B
4C
4D
4F
4G 38 Instrument Panel Wire and Center Connector No.1 (Behind the Combination Meter)
4H
4I
4J
4K
4L
5A
5B
5C
5D
5E
5F
42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5G
5H
5J
5K
5L
5M
: Ground Points
181
PRIUS (EM03Q0U)
Stop Light
(BAT)
7. 5A
STOP
18 1A
B
2
S16
Stop Light SW
1
L
C
J9
Junction
Connector
C
5 IF1
Noise Filter
N5
L
C C L
Connector
Junction
J31
C C
6 BH3
L
L
4 BK1
2 2
L
1
H19
Rear Combination
High Mounted
Rear Combination
Stop Light
Stop
Stop
2
Light RH
Light LH
R10
R9
W–B
5 5
A
J34
Junction
Connector
W–B
W–B
A
W–B
BN BO
182
PRIUS (EM03Q0U)
: Parts Location
Code See Page Code See Page Code See Page
H19 53 J34 53 R10 54
J9 50 N5 54 S16 51
J31 53 R9 54
Code See Page Junction Block and Wire Harness (Connector Location)
1A 30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
: Ground Points
183
PRIUS (EM03Q0U)
Back–Up Light
(IG) (BAT)
10A 15A
GAUGE DOME
3
19 1A 1 1M
R
V
V
E P
Connector
Junction B
Connector
Junction
J10
16 5L 16 5H 15 4I 8 1L
J6
E
B
V
7 5D 11 5D 15 4C 13 1A
6 3H
G
Y
L
R
P
22 21 23
(VFD)
8 3H 7 3H
Power
R
Supply
Circuit
A
Connector
Junction
J10
Combination Meter
BEAN IC
R
C10
Buzzer
6 IF1 14 IA3
14 25
P
R
GR
BR
A
A J31
Junction
Connector
A 4 IG1 3 IG2
G
R
P
Rear Combination
Rear Combination
4 4
4 4C 13 5D
Back–Up
Back–Up
Light RH
Light LH
R10
R9
5 5 15 4H 13 5G
W–B
W–B
GR
BR
BN II
184
PRIUS (EM03Q0U)
G1 H14
Gateway ECU Hybrid Vehicle Control ECU
MPD1 CA1L CA1H CANHCANL VSX4 VCX4 VSX3 VCX3 VSX2 E2X2 VCX2 VSX1 E2X1 VCX1
3 18 17 8 9 30 31 23 21 24 14 16 25 15 17
(Shielded)
(Shielded)
W
B
(Shielded)
GR
BR
SB
W
G
R
P
B
L
A B B A 8 A 6 A 5 A 3 A 4 B 5 B 6 B 1 B 2 B 3 B
VSX4 VCX4 VSX3 VCX3 VSX2 E2X2 VCX2 VSX1 E2X1 VCX1
24
W–B
MPX2 4 4H
P6
Power Source Control ECU
W–B
MPX1
A
7 J25
A
Junction
Connector
GR
A
W–B
IH
185
PRIUS (EM03Q0U)
Back–Up Light
: Parts Location
Code See Page Code See Page Code See Page
C10 49 J17 50 R9 54
G1 49 J18 50 R10 54
H14 49 J25 50 S4 A 51
J6 50 J31 53 S5 B 51
J10 50 P6 51
: Relay Blocks
Code See Page Junction Block and Wire Harness (Connector Location)
1A 30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1L
31 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1M
3H 24 Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
4C
4E
38 Instrument Panel Wire and Center Connector No.1 (Behind the Combination Meter)
4H
4I
5C
5D
5G 42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5H
5L
: Ground Points
186
PRIUS (EM03Q0U)
Memo
187
PRIUS (EM03Q0U)
Key Reminder
B 5(A)
(IG) (ACC) (IG) Body ECU
10A 7. 5A 7. 5A
GAUGE ACC ECU–IG
SIG ACC ECUB MPX1
5 21 6 17
(BAT) 9 1G
15A
GR
DOME
2
8 5K
1 1M 30 1A 3
P
V
8 5J
16 5L
16 5H 8 1L
GR
L
7 5D 11
11 5D 13 1A MPX2+
A/C Control
B
V
Assembly
R B B
13 IG2 9 IG2 MPX+
A8
J6 3
Junction
V
Connector
B
22 21
13 5J
4 5C
G1
GR
Gateway ECU
Buzzer
Combination Meter
Power
Supply MPD1 MPD2
Circuit BEAN IC
3 12
GR
GR
C10
8 5C
14 24 25
GR
BR
8 5G
B
24
W
MPX2
4 4C 13 5D P6
Power Source Control ECU
2 4C
MPX1
7
15 4H 13 5G
13 4K
GR
BR
GR
B
II
188
PRIUS (EM03Q0U)
B 5(A)
Body ECU
21 1D 26 1E 17 1E
B
Y
11 4F 7 4I 7 4L 3 4H
W–B
11 4D 3 4J
(∗1)
GR
GR
Certification ECU
31
B
Y
MPX1
17 4
ID Code Box
MPX1
(∗2)
W
V
MPX2
S11
Key Slot
8 II1 32
MPX2
K2
T5
16 2
(∗1)
GR
B
GR
W–B
2 4D
19
Transmission
MPX1
Control ECU
Door Courtesy SW
16 4L 1 9 5G
14 4I
MPX2
T4
Front LH
18
B
14 4K
D7
5 5L
B
9 II1
W–B
W
B
6 A
Connector
Junction
12
W–B
W–B
B
IH
189
PRIUS (EM03Q0U)
Key Reminder
System Outline
Key Reminder System
If the driver’s side door is opened with the power supply set at ACC or OFF position and with the electrical key remained in
the key slot, signal from key slot is input to TERMINAL KSW of body ECU and that from courtesy SW at driver’s side is input
to TERMINAL DCTY of body ECU. The signal from body ECU to combination meter activates warning buzzer to send a
message to the driver that electrical key remains in the key slot.
: Parts Location
Code See Page Code See Page Code See Page
A8 48 J6 50 T4 51
B5 A 48 J25 50 T5 51
C10 49 K2 50 T11 51
D7 52 P6 51
G1 49 S11 51
: Relay Blocks
Code See Page Junction Block and Wire Harness (Connector Location)
1A 30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1D 30 Floor Wire and Driver Side J/B (Lower Finish Panel)
1E
30
1G
Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1L
31
1M
4C
4D
4F
4H
38 Instrument Panel Wire and Center Connector No.1 (Behind the Combination Meter)
4I
4J
4K
4L
5C
5D
5G
5H 42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5J
5K
5L
: Ground Points
190
PRIUS (EM03Q0U)
Memo
191
PRIUS (EM03Q0U)
Seat Belt Warning
(IG) (BAT)
O
10A 15A
GAUGE DOME
6
2 IG+
Front Passenger
L
Warning Light
1 1M 6 1G 3
Seat Belt
9 IG2
PBEW
F11
R
Y
B
Connector
C10
Junction
22 21 Combination Meter 30
V
J6
B
R
Seat Belt
Driver' s
Buzzer (VFD)
16 5L 6 5K 13 1A 11 5D
Power
Supply
Circuit
7 5D 14 5D 8 1L 16 5H
P
W
Y
13 IG2 1 IG2
14 9 6 7
BR
LG
R
V
O
B16
4 IG1 10 IG1 3 IG1 4 IG2 Buckle SW
V Front RH
G
R
Y
4 4C 9 4C 3 4C 10 5D
2 1
Occupant Classification
15 4H 16 4I 9 4K 8 5E
G
9 R5
LG
R
V
BSW BGND
7 IA3 15 ID3
ECU
FSR– FSR+
O4
Junction Connector
4 8
V C A
J20(A), J21(B)
LG
Y
Buckle SW Front LH
Airbag Sensor
28 D 22 D 32 A 22 A 35 B 27 B 31 C 23 C FSP– FSP+
B15
Assembly
W
W
G
R
B
L
1
PBEW
W–B
13 B
A
Connector
Junction
A
W–B
II BL
192
PRIUS (EM03Q0U)
System Outline
If the driver does not have seat belt fastened when power SW is turned to IG ON position, the indicator in combination meter
lights up. Buzzer sound for 6 seconds reminds the driver of seat belt fastening. After that, if seat belt has not been fastened
yet, another buzzer sound goes on for 30 seconds when vehicle speed is 15 km/h or more. The buzzer sound also goes on
when the driver unfastens seat belt from fastening condition with vehicle speed over 15 km/h.
Sensor installed in front passenger seat detects whether passenger(s) is(are) seated on front passenger seat(s). If a
passenger does not have seat belt fastened in front seat, passenger seat belt warning light blinks.
: Parts Location
Code See Page Code See Page Code See Page
A18 B 48 F11 49 O4 54
A19 C 48 J6 50 S7 A 51
B15 52 J20 A 50 S8 B 51
B16 52 J21 B 50 S9 C 51
C10 49 J30 53 S10 D 51
: Relay Blocks
Code See Page Junction Block and Wire Harness (Connector Location)
1A 30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1G 30
1L Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
31
1M
4C
4H
38 Instrument Panel Wire and Center Connector No.1 (Behind the Combination Meter)
4I
4K
5D
5E
5H 42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5K
5L
: Ground Points
193
PRIUS (EM03Q0U)
Front Wiper and Washer
C13(A), C14(B)
Combination SW
(IG) (IG)
+B +2 +1 +S INT1 INT2 B1 W EW
20A WSH
30A WIP
Washer SW
MIST OFF
Front
Front Wiper SW
OFF ON
INT
36 1A 2 1I 2 1A
LO
HI
LG
LG
Wiper Relay
WF +B +2 +1 +S EW
3 A 2 B 4 B 3 B 1 B 2 A
A
J7
Junction
G
B
Connector
A 15 5C
5 IA1
LG
R
B
2
8 5N 2 5J
M
W–B
F9
1
G
L
4
6 IA1 7 IA1 8 IA1 WIP
LG
W
G
R
A8
2 4 1 3 A/C Control
Assembly
B +2 +1 S
1 1I
M
17 1E
Front Wiper Motor
E
F10
5
W–B
W–B
EA IH
194
PRIUS (EM03Q0U)
System Outline
With the power SW pushed to IG ON position, the current flows to TERMINAL (B) 2 of the wiper and washer SW, and
TERMINAL 2 of the front wiper motor through the WIP fuse.
1. Low Speed Position
With the wiper and washer SW turned to LO position, the current flows from TERMINAL (B) 2 of the wiper and washer SW to
TERMINAL (B) 3 to TERMINAL 5 of the front wiper motor to TERMINAL 4 to GROUND, which runs the front wiper motor at
low speed.
2. High Speed Position
With the wiper and washer SW turned to HI position, the current flows from TERMINAL (B) 2 of the wiper and washer SW to
TERMINAL (B) 4 to TERMINAL 3 of the front wiper motor to TERMINAL 4 to GROUND, which runs the front wiper motor at
high speed.
3. INT Position
With the wiper and washer SW turned to INT position, the wiper relay operates and current flows from TERMINAL (B) 2 of
the wiper and washer SW to TERMINAL (A) 2 to GROUND. This activates the intermittent circuit and the current flows from
TERMINAL (B) 2 of the wiper and washer SW to TERMINAL (B) 3 to TERMINAL 5 of the front wiper motor to TERMINAL 4
to GROUND and then the wiper operates. Intermittent operation is controlled by a condenser’s charge and discharge
function in the relay.
4. Washer Interlocking Operation
With the wiper and washer SW pulled to washer position (Washer SW ON position), the current flows from the WSH fuse to
TERMINAL 1 of the front washer motor to TERMINAL 2 to TERMINAL (A) 3 of the wiper and washer SW to TERMINAL (A) 2
to GROUND and runs the washer motor and the window washer to spray. Simultaneously, current flows from the WIP fuse to
TERMINAL (B) 2 of the wiper and washer SW to TERMINAL (B) 3 to TERMINAL 5 of the front wiper motor to TERMINAL 4
to GROUND, which activates the wiper.
: Parts Location
Code See Page Code See Page Code See Page
A8 48 C14 B 49 F10 46
C13 A 49 F9 46 J7 50
Code See Page Junction Block and Wire Harness (Connector Location)
1A 30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1E
30 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1I
5C
5J 42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5N
: Ground Points
195
PRIUS (EM03Q0U)
Rear Wiper and Washer
(IG) (IG)
15A 20A
RR WIP WSH
C13(A), C14(B)
Combination SW
WR +1R C1R EW
25 1D 2 1A
Washer
Rear Washer SW
Rear Wiper SW
OFF
L
L
LO
Junction Connector
J31
Junction HI
B Connector
J 7(A), J 8(B)
A A
On and
Washer
B B 5 B 7 A 6 A 2 A
C B
P
L
V
L
11 5I 1 5C 3 5C 2 5C
1
(Rear Wiper)
Rear Washer Motor
Diode
1
D18
2
1 BH3 4 BH3 12 5N 7 5H 14 5I 15 5I
M
L
R2
W–B
V
P
10 ID3 11 ID3
8 IA2
L
P
L
P
L
1 BK2 2 BK2
P
LG
LG
W
P
L
1 4 3 4 5 6 2
+B S +B LM SM LS C1
3
M
+1
–
R17 2 1 1I
Rear Wiper Motor
W–B
R18
A
Connector
A
W–B
W–B
BO IH
196
PRIUS (EM03Q0U)
System Outline
When the power SW is pushed to IG ON position, the current flows from the WSH fuse to rear washer motor TERMINAL 1,
and the current flows from the RR WIP fuse to rear wiper relay TERMINAL 3, and to the rear wiper motor TERMINAL 1
respectively.
1. Rear Wiper Normal Operation
When the power SW is pushed to IG ON position, and the rear wiper and washer SW is turned to HI position, the current
flows from the rear wiper relay TERMINAL 3 to TERMINAL 6 to the rear wiper and washer SW TERMINAL (A) 7 to
TERMINAL (A) 2 to GROUND, and turns on the rear wiper relay. As a result, the current flows from the rear wiper relay
TERMINAL 3 to TERMINAL 4 to the rear wiper motor TERMINAL 3 to TERMINAL 2 to GROUND, and operates the rear
wiper.
2. Rear Wiper Intermittent Operation
When the power SW is pushed to IG ON position, and the rear wiper and washer SW is turned to LO position, the current
flows from the rear wiper relay TERMINAL 3 to TERMINAL 2 to the rear wiper and washer SW TERMINAL (A) 6 to
TERMINAL (A) 2 to GROUND, and the intermittent circuit in the rear wiper relay is controlled to operate the wiper
intermittently.
3. Washer Operation
With the power SW is pushed to IG ON position, and the rear wiper and washer SW turned to ON position, when the washer
is turned ON (to Wiper HI side), current to TERMINAL 1 of the washer motor flows to TERMINAL 2 of the motor to
TERMINAL 5 of the rear wiper and washer SW to TERMINAL 2 to GROUND so that the washer motor rotates and the
window washer emits water.
With the power SW is pushed to IG ON position, and the rear wiper and washer SW turned to OFF position, when the
washer is turned ON (to Wiper OFF side), current flows as above so that the washer motor rotates and the window washer
emits water as well as the wiper operates.
: Parts Location
Code See Page Code See Page Code See Page
C13 A 49 J8 B 50 R17 54
C14 B 49 J31 53 R18 54
D18 49 J34 53
J7 A 50 R2 47
Code See Page Junction Block and Wire Harness (Connector Location)
1A 30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1D 30 Floor Wire and Driver Side J/B (Lower Finish Panel)
1E
30 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1I
5C
5H
42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5I
5N
: Ground Points
197
PRIUS (EM03Q0U)
Power Window
100A DC/DC
15A DOME
7. 5A ACC
ECU–IG
30A 10A 20A
7. 5A
PWR GAUGE FR DOOR
2 2 2
3 1 3D 17 1D 11 1H 2 1H 6 1G 10 1H
V
Junction Connector
W
R
L
6 5K
W
B
6 5N
J6
V
R
16 IE1 3 IE2
30 1A
W
V
6 21 5 11 7
B ACC SIG BDR BW
Body ECU
DCTY GND KOF P17
Power Window Master SW
26 1 13 1 1B
B PU PD
6 13 15
R
L
L
PWR 5 IE3 1 IE3 2 IE3
Relay
L
L
A
Connector
Junction
21 1D 17 1E L A
J22
A
R
L
L
V
1
R
L
D7 4 5 2
Door Courtesy SW
Front LH
Power Window Control SW
Down
Up
3 1
Front RH
P14
G
Y
2 1
M
P19
IH Power Window Motor Front RH
198
PRIUS (EM03Q0U)
P18
Power Window Motor Front LH
GR
G
G
P
Y
P17
Power Window Master SW 3 2 17 14 9 4
VCC GND PLS2 PLS DD DU
W–B
W
O
Connector
4 IE3 3 IE3 7 IE2 6 IE2
Junction
L
J27
A
W
O
B
L
W–B
B
L
L
W–B
B
L
4 5 2 4 5 2 A
Connector
Junction
Power Window Control SW
J24
A
Down
Down
Up
Up
3 1 3 1
Rear RH
Rear LH
P15
P16
W–B
G
G
Y
2 1 2 1
M M
P20 P21
Power Window Motor Rear LH Power Window Motor Rear RH IH
199
PRIUS (EM03Q0U)
Power Window
System Outline
1. Manual Up and Down Function
This function operates the window to open or close while the power window switch is being pulled up or pushed down
(Driver’s SW should be pulled up and down halfway for manual operation.). The window stops as soon as the switch is
released.
2. Driver’s Door One–Touch Auto Up and Down Function
”The driver’s door one–touch auto up and down function” enables the window of front doors to be fully opened or closed with
a touch of the power window switch.
3. Jam Protection Function (Driver’s Door)
The jam protection function automatically stops the power window and moves it downward if a foreign object gets jammed in
the course of the window during one–touch auto–up operation.
4. Remote Control Function
The up and down operation of the front passenger door windows and the rear door windows can be controlled by operating
the power window master switch.
5. Key–Off Operation Function
For about 43 seconds after pushing OFF the power SW or opening the driver’s side door, this function enables the power
window master switch to operate all the door windows and enables the switch of each passenger’s door to operate each
window manually. Please note that the function becomes unavailable if the driver’s side door is shut. (The one–touch auto
up and down operation of the driver’s side door is included as well)
∗ When the battery terminal or fuse is disconnected, the glass position of all door windows have to be reset to the initial
positions, one by one, with the power window control switch by following the procedure below:
A) Reconnect the battery terminal or fuse.
B) Push the power SW to IG ON position
C) Lower the window of each door halfway or more with the power window switch.
D) Then close the window fully with the power window switch.
Do not release the switch for at least one second after the window is fully closed.
: Parts Location
Code See Page Code See Page Code See Page
D7 52 P14 54 P19 54
J6 50 P15 54 P20 54
J22 50 P16 54 P21 54
J24 50 P17 54
J27 53 P18 54
: Relay Blocks
Code See Page Junction Block and Wire Harness (Connector Location)
1A
30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1B
1D 30 Floor Wire and Driver Side J/B (Lower Finish Panel)
1E
1G 30 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1H
3D 23 Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
5K
42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5N
200
PRIUS (EM03Q0U)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
ID4 58 Instrument Panel Wire and Floor Wire (Left Kick Panel)
IE1
IE2 58 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IE3
IL2 59 Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
IM2 59 Instrument Panel Wire and Floor No.2 Wire (Right Kick Panel)
BB1 60 Rear Door No.2 Wire and Floor Wire (Left Center Pillar)
BJ1 61 Rear Door No.1 Wire and Floor No.2 Wire (Right Center Pillar)
: Ground Points
201
PRIUS (EM03Q0U)
Door Lock Control
B 5(A), B 7(C)
(BAT) (IG) (BAT) Body ECU
15A 7. 5A 25A
DOME ECU–IG DOOR
ALTB SIG ECUB OBD2 DCTY GND
2 4 5 6 18 26 1
30 1A 3 1L 21 1D 17 1E
R
W–B
LG
11 5H
B
B R
V
J6
Junction 8 5M
Connector
D7
W–B
IH
202
PRIUS (EM03Q0U)
B 5(A), B 7(C)
Body ECU
16 1H 8 1H 4 1H 5 1H 13 1H 14 1H
BR
LG
LG
G
P
V
L
BR
LG
LG
G
P
V
L
Unlock
Lock
M Door Look
Unlock
Control SW
Lock
Key
Key
D11
E
P17
3
7 D12 1
Door Lock Motor Front LH
Door Unlock Detection SW Front LH
W–B
W–B
A A
Connector
Junction
Connector
A A
W–B
W–B
5 IE2 10 IL2
W–B
W–B
A A
Connector
Junction
J24 A W–B
Junction
J25
Connector
A A
W–B
W–B
IH
203
PRIUS (EM03Q0U)
Door Lock Control
B 5(A), B 7(C)
Body ECU
O
Y
9 1H 17 1H 3 1D 4 1D 15 4F
7
O
4K
G
G
Y
Y
Junction Connector
C A 6 4K
A Y
C G
O
J22
C A
16 ID3 5 IM2 4 IM2 14 IM1
G
G
Y
O
Y
7 IL2 6 IL2 4 IL1 5 BB1 6 BB1 4 BB1 6 BJ1 5 BJ1 4 BJ1
Door Unlock Detection SW Front RH
O
Y
Y
Door Lock Motor Front RH
1 4 7 4 1 6 1 4 6
M M M
D13
D14
D15
8 9 9
W–B
W–B
W–B
17 BB1 17 BJ1
W–B
W–B W–B
A
J32
Junction
W–B
Connector
A
W–B
BL BQ
204
PRIUS (EM03Q0U)
B 5(A), B 7(C)
Body ECU
LG
26 1E 7 1D
13 4F
Y
Y
9 4K
3 4H
12 ID4
LG
R
15 ID3
3 4J
Y
LG
Y
4 2 4 2
Luggage Compartment Courtesy SW
Buckle SW
Front LH
Key Slot
B15
K2
2 1
W–B
1 3
9 5G
L3
W–B
5 5L
W–B
W–B
W–B
A A
A
A J30
Junction
Connector
W–B
W–B
BL
205
PRIUS (EM03Q0U)
Door Lock Control
System Outline
The door lock control is a system controlled by various signals input into the body ECU through communication control of the
body ECU etc.
1. Manual Unlock Operation
When the door lock control SW of the driver’s or passenger’s side door is pushed to UNLOCK, the door unlocks.
2. Manual Lock Operation
When the door lock control SW of the driver’s or passenger’s side door is pushed to LOCK, the door locks.
3. Door Key Unlock Operation
∗ Unlock operation from driver’s side door
When the driver’s side door is unlocked once using the mechanical key, only the driver’s side door unlocks. If this
operation is repeated within 3 seconds, all the other doors also unlock.
4. Ignition Key Reminder Operation
Under condition that the electrical key remains inserted in the key slot and driver’s side door is open, locking operation with
door knob of driver’s door is not effective but automatically unlocks the door. When the door is locked with the manual door
lock SW of driver’s door or door key SW of driver’s door, the door locks once but right after that, the door unlocks
automatically.
: Parts Location
Code See Page Code See Page Code See Page
B5 A 48 D13 52 J26 53
B7 C 48 D14 52 J27 53
B15 52 D15 52 J30 53
D1 49 J6 50 J32 53
D7 52 J22 50 K2 50
D11 52 J24 50 L3 53
D12 52 J25 50 P17 54
: Relay Blocks
Code See Page Junction Block and Wire Harness (Connector Location)
1A 30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1D 30 Floor Wire and Driver Side J/B (Lower Finish Panel)
1E
30
1H Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1L 31
4F
4H
38 Instrument Panel Wire and Center Connector No.1 (Behind the Combination Meter)
4J
4K
5G
5H
42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5L
5M
206
PRIUS (EM03Q0U)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
ID3
58 Instrument Panel Wire and Floor Wire (Left Kick Panel)
ID4
IE1
IE2 58 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IE3
IL1
59 Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
IL2
IM1
59 Instrument Panel Wire and Floor No.2 Wire (Right Kick Panel)
IM2
BB1 60 Rear Door No.2 Wire and Floor Wire (Left Center Pillar)
BJ1 61 Rear Door No.1 Wire and Floor No.2 Wire (Right Center Pillar)
: Ground Points
207
PRIUS (EM03Q0U)
Smart Key System and Wireless Door Lock Control
B 5(A), B 6(B), B 7(C)
Body ECU
(BAT) (BAT) (BAT) (ACC)
3 3B 1 3D
W
G
W
W
1 1B
3 3
3 4F
1 5 T–LP Relay
H–LP
Relay 8 4I
2 3
3 3
G
B
(∗2)
G
Junction Connector
J 7(A), J 8(B)
E A
(∗1)
G
E B
(∗2)
G
2 IJ3
G
208
PRIUS (EM03Q0U)
B 5(A), B 6(B), B 7(C)
Body ECU
21 1D 24 1D 5 1D 20 1D
(IG)
Y
7. 5A
ECU–IG
BR
R
7 1L 17 1E 3 1L 3 IA1
5 ID2 4 ID2
O
W–B
BR
LG
R
V
15 5H
Y
1
11 5H
W
R
T1
7 5L
8 5M
1 1 1 1
6 5I
W
D10
D7
D8
D9
B
7
SIL
D1
W–B
IH
209
PRIUS (EM03Q0U)
B
210
W6
8
Wireless Door Lock Buzzer
2
1
W–B R R
13 B
Buzzer
EE
IJ3
BUZ
L3
Luggage Compartment Courtesy SW
Luggage Compartment Door Opener Motor
A
1
2
23
W–B R
7 1D
BCTY
A
A
3
4
W–B W–B Y Y
1 C
BL
12 ID4
BACT
J30
Junction
Connector
Body ECU
D12
Door Lock Motor Front LH
Door Unlock Detection SW Front LH
B 5(A), B 6(B), B 7(C)
7
8
W–B LG LG
25 C
15 IE1
LSWD
1
G G
5 C
10 IE2
ACTD
4
2
Y Y
M
8 1H
9 IE2
ACT+
PRIUS (EM03Q0U)
J22
Junction
7
Connector
Smart Key System and Wireless Door Lock Control
1
3
C
C
G G G
9 1H
IL2
ACT–
4
A
A
Y Y Y
M
17 1H
IL2
A
8
7
W–B Y Y
IL1
D13
Door Lock Motor Front RH
Door Unlock Detection SW Front RH
B
Y
Y
W–B
W–B
B 5(A), B 6(B), B 7(C)
Body ECU
LSWP LSWR
10 C 10 A
O
15 4F
3 1D 4 1D
7
O
4K
G
Y
Y
6 4K
Y
O
16 ID3 5 IM2 4 IM2 14 IM1
G
Y
O
Y
5 BB1 6 BB1 4 BB1 6 BJ1 5 BJ1 4 BJ1
G
O
Y
Y
Door Unlock Detection SW Rear RH
Door Unlock Detection SW Rear LH
4 1 6 1 4 6
Door Lock Motor Rear RH
Door Lock Motor Rear LH
M M
9 9
D14
D15
W–B
W–B
17 BB1 17 BJ1
W–B
A
J32
Junction
W–B
Connector
A
W–B
W–B W–B
B B
W–B W–B
BL BQ
211
PRIUS (EM03Q0U)
Smart Key System and Wireless Door Lock Control
B 5(A), B 6(B), B 7(C)
Body ECU
HORN ECUB
15 6
S 7(A), S 8(B), S 9(C), S10(D)
Skid Control ECU
28 1A 30 1A
(IG) (BAT)
SP1
R
22 B
10A 10A
GAUGE HORN 7
V V
IA3
Y
2
1 1M (BAT)
HORN Relay
V
V
15A
DOME
16 5L 16 4I R
R
2
7 5D 9 4C 3
L
8 3J 7 3J
R
Y
Y
B
B
22 9 21
R
13 1A 5 1O 7 1F
Combination Meter
(VFD)
8 1L
Smart
Buzzer
C10
Key
P
L
Power
Supply
Circuit BEAN IC
11 5D 16 5H
1 5G
14 25 24
GR
BR
15 4H 4 4C
R
2 13
B
4C 4K
W–B W–B
B B
W–B W–B
II
212
PRIUS (EM03Q0U)
B 5(A), B 6(B), B 7(C)
Body ECU
ILL HAZ
7 25
S 7(A), S 8(B), S 9(C), S10(D)
Skid Control ECU
2 1O 27 1E 8
Flasher Relay
EHW
FL+ FL– FR+ FR– RL+ RL– RR+ RR–
B
L
28 D 22 D 32 A 22 A 35 B 27 B 31 C 23 C
W
W
G
R
B
L
Connector
Junction
R B
J33
R R
B
R
R 1
1
R
B
J31
Junction Connector
DOOR
Interior Light
Overhead J/B
OFF
5 IB1 2 4G 2 4J 6 4L 7 IB1
DOOR
ON
D D D
L
I18
O3
R
3 2
B
3 4
R
3 ID3 L
W–B
W–B
R
A A A
Junction Connector
A A A A
J23
B B
P P
W–B W–B
B B
W–B W–B
213
PRIUS (EM03Q0U)
Smart Key System and Wireless Door Lock Control
B 5(A), B 6(B), B 7(C)
Body ECU
B
23 1E 26 1E 9 1G
B
B
Y
B
B
R
B
GR
GR
R
P
3 4H 14 4D 8 5K 4 5C Y
3 BK2
8 5J 13 5J
3 4J
GR
Luggage Compartment
B
B
Y
11 3
Door Lock SW
MPX2+
MPX1
L4
3 4
A8
W–B
B
Junction Connector
A
J34
W–B
Y
R R
R R
R R
R R
R R
R R
B B
W–B W–B
B B
W–B W–B
BO
214
PRIUS (EM03Q0U)
B 5(A), B 6(B), B 7(C)
Body ECU
RDA PRG
23 C 24 C
5 3
B
L
B B B
BH1 ID2
B B
B B
R R
GR GR
P P
Y Y
S11
8 29 28 Certification ECU
TSW6 RDA3 PRG
R
Y
3 6 5 2 1
W
L
Warning ECU
B
Tire Pressure
MPX1
O
2 3 4 5 6 7
MPX2
T11
+B GND
Y D16 1 8
Door Oscillator Front LH (w/ Sensor)
R
BR
W
V
9 6
R R Y
IE1 BA1
R R
R R
R R
R R
B 8 BA1 5 BA1
W–B
W–B
W–B W–B
B
A A
W–B W–B A A W–B
J27
Junction
Connector
215
PRIUS (EM03Q0U)
Smart Key System and Wireless Door Lock Control
B B
B B
R R
GR GR
P P
Y Y
B B
S11
Certification ECU
R
B
W–B
G
3 1
Room Oscillator
R
B
CLG3
Cancel SW
3 6 5 2 1
9 BI1 10 BI1 7 BI1 1 BI1
+B GND
S12
R8
W
G
R
L
B
1 5 2
O
P
W–B
W–B
2 3 4 5 6 7
R
11 4L 10 4L 12 4L +B GND
D17 1 8
Door Oscillator Front RH
(w/ Sensor)
BR
V
4 4H 13 4D 5 4H
8 BI1 5 BI1
W–B
W–B
W–B
W–B
W–B
12 6
R R R
IL1 BI1
R R
R R
W–B
A
W–B A J26
Junction
Connector
A
10 A A
W–B A A W–B W–B
IL2
W–B A A W–B W–B
W–B
W–B
A W–B W–B
A
5
W–B W–B A A W–B W–B
IE2
J24 IH J25
Junction Junction Connector
Connector
216
PRIUS (EM03Q0U)
B B
B B
R R
GR GR
P P
Y Y
B B
S11 GR
Certification ECU
V
L
GR
O
BR
BR
O
R
L7
Luggage Oscillator (Inner)
Luggage Oscillator
5 4 3 3 4 (Outer)
Door Control Receiver
L6
W–B
W–B
W–B
R
SB
O
W–B
R
11 ID2 2 1
ANT1 ANT2
W–B
E10
R Electrical Key Antenna
(Luggage Compartment Door)
R
W–B A A
W–B A
A J30
Junction
Connector
W–B
W–B W–B
W–B W–B
W–B W–B
BL
217
PRIUS (EM03Q0U)
Smart Key System and Wireless Door Lock Control
H14(A), H17(D)
Hybrid Vehicle Control ECU
(BAT)
7. 5A
P CON MAIN
IMI IMO
2 18 A 26 A
R
B
GR
Y GR
B P
R
B
L
GR GR
W–B L
2 B 6 B 2 A 4 A 3 A
ILL+ ILL– COM KSW1 KSW2
9 II1
Junction Connector
D
Transponder Key Coil
P
J10
D
Transponder Key Amplifier
W–B
Y
L
9 5G
11 4F 13 4I 12 4J 13 4J 14 4J 15 4J 10 4E 11 4E 14 4I 16 4J
5 5L 10 5G 11 5G 11 4D 3 4D 8 4D 7 4D 6 4D 5 4D 9 4D 10 4D 2 4D 4 4D
GR
LG
R
B
P
L
L
W–B
W–B
W–B
17 3 7 6 21 20 5 19 18 16 14
MPX1 CPUB AGND TXCT CODE VC5 CUWS HEV0 HEV1 MPX2 LIN1
GND
T5 22
ID Code Box
W–B
W–B
W–B W–B
W–B W–B
W–B
218
PRIUS (EM03Q0U)
H14(A), H17(D)
Hybrid Vehicle Control ECU
(BAT)
7. 5A
STOP
18 1A
GR GR
P GR
GR GR
B B
GR
B
P
P11
Power SW 2
Stop Light SW
S16 13 5D 8 5C
1
Junction Connector
L
13 5G 8 5G
C
P
6 1 5 7 8 4 2 C
GR
B
L
W–B
W–B
G
R
B
14 37 13 4 36 30 25 1 7 24
SSW1 SSW2 INDW INDS SWIL LIN1 CDSW STP MPX1 MPX2
GND2 P
6 P6 5
Power Source Control ECU
4 2 12
W W W
4J 4I II1
W–B
W–B
W–B
219
PRIUS (EM03Q0U)
Smart Key System and Wireless Door Lock Control
H14(A), H17(D) G1
Hybrid Vehicle Control ECU Gateway ECU
W
B
GR
GR
GR
B
J17
Junction
Connector
A
(Shielded)
W
B
GR
A
(Shielded)
7 4L
W
B
7 4I
B A B A
GR
W
J14
Junction
B Connector
W B B 8 II1 J18
B A
Junction Connector
A
(Shielded)
GR
W
T4 A
W
B
Transmission
Control ECU 8 18 19
PPOS MPX2 MPX1
E 4(A), E 6(C)
W–B
LG
O
P
NE+ NE–
8 4 3 5 9 33 A 34 A
RE2 RZ1 RB RA RVC
(Shielded)
BR
G
R
A A
Connector
Connector
Junction
Junction
1 2 G A A
J25
J12
A A
C7 J14
Crankshaft Junction
W–B
BR
220
PRIUS (EM03Q0U)
System Outline
Smart key system is a system to enable, without operating the key, to lock/unlock doors, to unlatch luggage compartment
door, to start engine (Motor). It owes interactive communication function of electrical key, which makes the vehicle to
recognize where the key is. All that driver has to do is to have the key with him or her. If the electrical key runs out of dry
battery, the key operates as normal key without the smart key system.
1. Smart Door Unlock Function
When all the doors are locked, oscillator of each door sends signal regularly and forms detecting area outside of passenger
room around 0.7 to 1m from each door handle. After forming the area, driver goes in the area with the electrical key, the key
sends ID code signal. Certification ECU receives the signal through electrical key antenna and identifies ID code. After
identifying ID code, doors in the area get into unlock stand–by condition. At this time, sensors installed in door handles
activate. Touching back of door handles unlocks the door locks, lights up hazard lamp and sounds wireless door lock buzzer.
If any door is not opened within 30 seconds after unlocking the door lock, the doors lock again.
2. Smart Door Lock Function
If driver gets off the vehicle with the electrical key and pushes lock SW of door handles when all doors are locked,
certification ECU sends signal to inside and outside of passenger room to identify the electrical key. In case identification
with inside of the passenger room is NG and that with outside of it is OK, doors lock. Door ajar alarm sounds to tell a door is
not shut properly when lock SW of door handle is pushed with any door opened.
3. Smart Luggage Compartment Door Unlatch Function
If the driver stands in front of luggage compartment door with the electrical key and pushes unlock SW of luggage
compartment door, ID code of the electrical key is identified with certification ECU through luggage oscillator (Outer). After
the ID code is identified, luggage compartment door is unlocked. To keep pushing luggage compartment door opener SW
unlatches luggage compartment door.
4. Smart Ignition (READY) Function
When the driver pushes the power SW with the electrical key with him or her, ID code of the electrical key is identified with
certification ECU by room oscillator in passenger room. After the ID code is identified, hybrid vehicle immobiliser is released
and electric power is set at ACC ON to enable to start engine. Then pushing the power SW sets power supply at IG ON and
another pushing sets it at OFF. Condition circulates from ACC ON to/from IG ON to/from OFF and to ACC ON. The vehicle
gets READY to drive when the driver pushes power SW with applying brake pedal at any power supply condition.
5. Smart Alarm Function
∗ If any door is opened and then shut with shift at P position and the power SW at other than OFF position, certification ECU
identifies ID code with inside of passenger room twice. In case the identification result is NG, buzzer in combination meter
alarms (Once) and wireless door lock buzzer alarms (Three times), and smart warning light in combination meter lights up.
If power supply is pushed OFF with power SW or identification of the electrical key with inside of passenger room is
confirmed at the second time, the warning stops.
∗ If all the doors are closed with shift at P position and power SW at other than OFF position, pushing lock SW of door
handle starts certification ECU to identify ID code with inside and outside of passenger room. In case result of identification
with inside is NG and that with outside is confirmed, wireless door lock buzzer alarms (For two seconds) and doors do not
lock.
∗ If driver’s side door is opened and then shut with shift at other than P position and power SW at other than OFF position,
certification ECU identifies ID code with inside of passenger room twice. In case the identification result is NG, buzzer in
combination meter and wireless door lock buzzer alarm continuously as well as smart warning light in combination meter
lights up. Then, if shift is put into P position or the identification with inside is confirmed at the second time, the continuos
alarming stops. If the driver turns electric power OFF with power SW or the identification with inside is confirmed at the
second time, smart warning light goes off.
∗ If other doors than driver’s side door is opened and then shut with shift at other than P position and power SW at other
than OFF position, certification ECU identifies ID code with inside of passenger room twice. In case the identification result
is NG, buzzer in combination meter alarms (Once) and wireless door lock buzzer alarms (Three times), and smart warning
light in combination meter lights up. If power supply is pushed OFF with power SW or identification with inside of
passenger room is confirmed at the second time, the warning stops.
∗ If lock SW of door handle is pushed with all the doors shut and power SW at OFF position, certification ECU identifies ID
code with inside of passenger room twice. In case the identification is confirmed then, wireless door lock buzzer alarms
(For two seconds) but doors do not lock.
∗ If power supply is turned OFF with power SW after ”READY to drive” condition are kept for about 20 minutes, certification
ECU identifies ID code of the electrical key with inside of passenger room. In case the ECU recognizes code of battery
voltage decrease, buzzer in combination meter alarms once.
∗ If power SW is pushed ON, certification ECU identifies ID code with inside of passenger room twice. In case the
identification result is NG, buzzer in combination meter alarms once and smart warning light lights up for about five
seconds. Then, driver’s operation of power SW is cancelled.
221
PRIUS (EM03Q0U)
Smart Key System and Wireless Door Lock Control
: Parts Location
Code See Page Code See Page Code See Page
A8 48 H14 A 49 K3 B 50
B5 A 48 H17 D 49 L3 53
B6 B 48 I18 53 L4 53
B7 C 48 J6 50 L6 53
C7 46 J7 A 50 L7 53
C10 49 J8 B 50 O3 54
D1 49 J9 50 P6 51
D4 52 J10 50 P11 51
D7 52 J12 50 R8 51
D8 52 J14 50 S1 47
D9 52 J17 50 S7 A 51
D10 52 J18 50 S8 B 51
D12 52 J22 50 S9 C 51
D13 52 J23 50 S10 D 51
D14 52 J24 50 S11 51
D15 52 J25 50 S12 51
D16 52 J26 53 S16 51
D17 52 J27 53 T1 47
E4 A 49 J30 53 T4 51
E6 C 49 J31 53 T5 51
E8 53 J32 53 T11 51
E9 53 J33 53 W6 47
E10 53 J34 53
G1 49 K2 A 50
222
PRIUS (EM03Q0U)
: Relay Blocks
Code See Page Junction Block and Wire Harness (Connector Location)
1A
30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1B
1D 30 Floor Wire and Driver Side J/B (Lower Finish Panel)
1E
1F
30
1G
Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1H
1L
31
1M
1O 30 Roof Wire and Driver Side J/B (Lower Finish Panel)
3B
23
3D Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
3J 24
4C
4D
4E
4F
4G
38 Instrument Panel Wire and Center Connector No.1 (Behind the Combination Meter)
4H
4I
4J
4K
4L
5C
5D
5G
5H
5I 42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5J
5K
5L
5M
223
PRIUS (EM03Q0U)
Smart Key System and Wireless Door Lock Control
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA1
58 Engine Room Main Wire and Instrument Panel Wire (Upper Parts of Front Body Pillar LH)
IA3
IB1 58 Roof Wire and Instrument Panel Wire (Upper Parts of Front Body Pillar LH)
ID2
ID3 58 Instrument Panel Wire and Floor Wire (Left Kick Panel)
ID4
IE1
58 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IE2
IG1
59 Instrument Panel Wire and Instrument Panel No.2 Wire (Behind the Combination Meter)
IG2
II1 59 Engine Wire and Instrument Panel Wire (Behind the Glove Box)
IJ3 59 Engine Room Main Wire and Instrument Panel Wire (Behind the Glove Box)
IL1
59 Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
IL2
IM1 59 Instrument Panel Wire and Floor No.2 Wire (Right Kick Panel)
BA1 60 Front Door LH Wire and Electrical Key LH Wire (Near the Front Door Outside Handle LH)
BB1 60 Rear Door No.2 Wire and Floor Wire (Left Center Pillar)
BH1 61 Back Door No.1 Wire and Floor Wire (Rear Side of Roof Panel)
BI1 61 Front Door RH Wire and Electrical Key RH Wire (Near the Front Door Outside Handle RH)
BJ1 61 Rear Door No.1 Wire and Floor No.2 Wire (Right Center Pillar)
BK2 61 Back Door No.1 Wire and Back Door No.2 Wire (Rear Side of Roof Panel)
: Ground Points
224
PRIUS (EM03Q0U)
Memo
225
PRIUS (EM03Q0U)
Wireless Door Lock Control without Smart Key System
25A DOOR
ECU–IG
DC/DC
HEAD
MAIN
100A
7. 5A
40A ALTB SIG TRLY HRLY SEC OBD2
2 2 4 5 19 20 C 1 B 18
3 3B 1 3D
W
Y
W 3 1L
W
1 1B
3 3
3 4F 3 IA1
LG
1 5
H–LP Relay
T–LP Relay
8 4I
2 3 11 5H
Y
3 3
8 5M
1
(∗2)
G
T1
J 7(A), J 8(B)
E A
Connector
(∗1)
W
Junction
E B
SIL
2 IJ3
D1
G
226
PRIUS (EM03Q0U)
B 5(A), B 6(B), B 7(C)
Body ECU
Flasher Relay
EHW
21 1D 24 1D 5 1D 20 1D 17 1E 8 1H
BR
W–B
LG
Y
5 ID2 4 ID2
R
V
LG
8 1 4
M
1 1 1 1
D12
7
D10
D7
D8
D9
W–B
A
J27
Junction
Connector
A
W–B
5 IE2
W–B
A
J24
Junction
Connector
A
W–B
W–B
W–B
IH
227
PRIUS (EM03Q0U)
Wireless Door Lock Control without Smart Key System
O
Y
9 1H 17 1H 3 1D 4 1D 15 4F
7
O
4K
G
G
Y
Y
Junction Connector
C A 6 4K
A Y
C G
O
J22
C A
16 ID3 5 IM2 4 IM2 14 IM1
G
G
Y
O
Y
7 IL2 6 IL2 4 IL1 5 BB1 6 BB1 4 BB1 6 BJ1 5 BJ1 4 BJ1
Door Unlock Detection SW Front RH
O
Y
Y
Door Lock Motor Front RH
1 4 7 4 1 6 1 4 6
M M M
D13
D14
D15
8 9 9
W–B
A
Connector
Junction
W–B
W–B
J26
A
W–B
W–B
A A
J25 J32
Junction Junction
W–B
Connector Connector
A A
W–B
W–B
W–B
BL BQ
228
PRIUS (EM03Q0U)
B 5(A), B 6(B), B 7(C)
Body ECU
L
(BAT) 30 1A 2 1O 27 1E
Connector
Junction
R B
15A
J33
DOME
B
B
R
L
2
B
L
3
17 IE1 17 IL1
R
R
2 4G 6 4L
B
Y
B L 7 IB1
B J6
Junction Connector 2 2 2 4J
Overhead J/B
R
1 1
R
B
D5
D6
13 1A 5 1O 1 6 1
R
Key Slot
K3
DOOR
DOOR
Interior Light
OFF
L
B
O3
I18
3 2 3 4
P
L
W–B
W–B
R
16 5H
A A A A
9 5I 1 5G
J23
Junction Connector
R
229
PRIUS (EM03Q0U)
Wireless Door Lock Control without Smart Key System
26 1E 7 1D 28 1A
(BAT)
W
G
R
Y
10A
HORN
Y
Y
3 4H 2
12 ID4 12 ID2 11 ID2 14 ID2
R
8 IJ3
HORN Relay
3 4J
W–B
R
Y
V
Luggage Compartment Door Opener Motor
Y
4 2 4 3 2 5
Door Control Receiver
PRG RDA +B
8 3J 7 3J
Key Slot
R
M
K2
B
W–B
D4
1 3
Buzzer
5 5L
W–B
W–B
W–B
W6
2
A A A
A J30
Junction
W–B
Connector
W–B
W–B
A
J25
Junction
Connector
A
W–B
IH BL EE
230
PRIUS (EM03Q0U)
System Outline
Door lock control (Lock and unlock) and panic control (Theft alarm and flash) is performed by remote control, without the key
inserted in the door key cylinder, using low–power electrical waves emitted from a transmitter.
1. Normal Operation
∗ Lock operation
When the lock SW on the transmitter is pressed, all the doors will lock.
∗ Unlock operation
When the unlock SW on the transmitter is pressed once, only the driver door will unlocks. When the unlock SW is pressed
again within 3 seconds, all the doors will unlock.
2. Auto Lock Function
When the door is not actually opened within 30 seconds after the door has been unlocked by the unlock SW on the
transmitter, all the doors will automatically lock. If any one of the following conditions is detected, the wireless door lock does
not function.
∗ Any door is opened.
∗ The electrical key is inserted in the key slot.
∗ Power SW is on
3. Wireless Door Lock Stop Function
If any one of the following conditions is detected, the wireless door lock does not function.
Lock operation
∗ When any door is open (Door courtesy SW on)
∗ The electrical key is inserted in the key slot (Unlock warning SW on)
∗ Power SW is on
Unlock operation
∗ Power SW is on
∗ The electrical key is inserted in the key slot
4. Visual Confirmation of Lock or Unlock
During lock operation, when the body ECU receives a lock signal from the door lock detection SW, the turn signal light
flashes once. During unlock operation, when the body ECU receives an unlock signal from the door lock detection SW, the
turn signal light flashes twice.
5. Remote Panic Operation
Panic will function when doors are locked or unlocked, open or closed. When the panic button (Transmitter) is pushed once,
interior lights light up, and theft alarm and horn sounds and turn signal lights, headlights and taillights flash. Then, any one of
the button (Transmitter) is pushed once again, interior lights turn off, sounding and flashing will stop. Panic will not function
when power SW is on.
6. Repeat Function
If the lock detection signal is not received in response to the output signal after the body ECU has output the lock signal, the
lock signal is output again.
7. Illuminated Entry Function
When the body ECU detects the unlock state after the unlock operation has been made, it lights up the key slot, overhead
J/B and interior light for approx. 15 sec. If all the doors are locked during this operation, lighting is cancelled and the lights
immediately fade out.
: Parts Location
Code See Page Code See Page Code See Page
B5 A 48 D13 52 J27 53
B6 B 48 D14 52 J30 53
B7 C 48 D15 52 J32 53
D1 49 I18 53 J33 53
D4 52 J6 50 K2 50
D5 52 J7 A 50 K3 50
D6 52 J8 B 50 L3 53
D7 52 J22 50 O3 54
D8 52 J23 50 T1 47
D9 52 J24 50 W6 47
D10 52 J25 50
D12 52 J26 53
231
PRIUS (EM03Q0U)
Wireless Door Lock Control without Smart Key System
: Relay Blocks
Code See Page Junction Block and Wire Harness (Connector Location)
1A
30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1B
1D 30 Floor Wire and Driver Side J/B (Lower Finish Panel)
1E
1F 30
Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1H
1L 31
1O 30 Roof Wire and Driver Side J/B (Lower Finish Panel)
3B
23
3D Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
3J 24
4F
4G
4H
4I 38 Instrument Panel Wire and Center Connector No.1 (Behind the Combination Meter)
4J
4K
4L
5G
5H
5I 42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5L
5M
: Ground Points
232
PRIUS (EM03Q0U)
Memo
233
PRIUS (EM03Q0U)
Luggage Compartment Door Opener
B 5(A), B 7(C)
(BAT) (IG) Body ECU
25A 7. 5A
DOOR ECU–IG
SIG ALTB BCTY BACT BDSU GND
5 4 23 1 C 12 C 1
P
7 1D 17 1E
5 4F
W–B
15 4K
P
12 ID4 17 ID3
P
4 BH1
∗ 1 : w/ Smart Key System
∗ 2 : w/o Smart Key System
P
R
Y
Luggage Compartment Door Opener Motor
7 BK2
Luggage Compartment Courtesy SW
P
2
M
1 3
L3
W–B
W–B
L4
A A
W–B
J30 A
Junction
Connector A
J34
Junction
Connector
A
W–B
W–B
W–B
BL BO IH
234
PRIUS (EM03Q0U)
B 5(A), B 7(C)
Body ECU
11 4F
B
6 17 15 A
11 4D
(IG) (BAT)
B
30 1A 9 1G
17
R
10A 15A
ID Code Box
MPX1
GR
GAUGE DOME
8 5C
B
Connector
Junction
B 3 MPX2
T5
2
Gateway ECU
J6 MPD1 16
1 1M 3 B 8 5G
GR
MPD2
G1
B
R
12 2 4D
R
V
24
13 1A MPX2
GR
GR
14 4I
8 5K 4 5C MPX1
P6
8 1L
B
7
GR
P
8 5J 13 5J 9 II1
16 5L 16 5H 13 5G
B
B
A/C Control Assembly
3 18
7 5D 11 5D 13 5D
Transmission
MPX+ MPX2
Control ECU
GR
V
P
L
MPX2+ MPX1
A8
T4
13 IG2 9 IG2 11 3 IG2 19
GR
V
GR
Y
22 21 25 8 II1
GR
(VFD) BEAN
IC 7 4I
Power Supply
Circuit
7 4L
(∗1)
GR
14 C10 9 24
Combination Meter
V
Certification ECU
31
BR
MPX1
10 IG1 2 IG1
(∗2)
4 IG1
W
W
MPX2
S11
7 IA3
2 4C 32
V
V
G
4 4C SP1 13 4K
B
15 4H MPX2
W
W
G
R
B
L
BR
MPX1
T11
16 4I 14 4K
II 6
W
ABS Speed Sensors
235
PRIUS (EM03Q0U)
Luggage Compartment Door Opener
System Outline
If the vehicle is stationary (Slower than 5 km/h) and luggage compartment door is unlocked, the luggage compartment door
opener motor activates with control of body ECU when luggage compartment door opener SW is pushed. It results in
releasing latch of luggage compartment door to open luggage compartment door.
: Parts Location
Code See Page Code See Page Code See Page
A8 48 J34 53 S10 D 51
B5 A 48 L3 53 S11 51
B7 C 48 L4 53 T4 51
C10 49 P6 51 T5 51
G1 49 S7 A 51 T11 51
J6 50 S8 B 51
J30 53 S9 C 51
: Relay Blocks
Code See Page Junction Block and Wire Harness (Connector Location)
1A 30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1D 30 Floor Wire and Driver Side J/B (Lower Finish Panel)
1E
30
1G
Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1L
31
1M
4C
4D
4F
4H 38 Instrument Panel Wire and Center Connector No.1 (Behind the Combination Meter)
4I
4K
4L
5C
5D
5G
5H 42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5J
5K
5L
236
PRIUS (EM03Q0U)
: Ground Points
237
PRIUS (EM03Q0U)
Theft Deterrent
3 3B 1 3D
W
G
W
W
1 1B
3 3
3 4F
1 5 T–LP Relay
H–LP
Relay 8 4I
2 3
3 3
G
B
(∗2)
G
J 7(A), J 8(B)
E A
Connector
(∗1)
Junction
E B
(∗2)
G
2 IJ3
G
238
PRIUS (EM03Q0U)
2
1
W–B P P
5 B
EF
13 IA3
HCTY
E3
Engine Hood Courtesy SW
1
Y Y
1 B
3 IA1
SEC
T1
Theft Deterrent Horn
7
18
W LG
3 1L
11 5H
8 5M
SIL
OBD2
D1
Data Link Connector 3
D
D
Y
Body ECU
5 1K
(BAT)
J19
Junction Connector
15A
B 5(A), B 6(B), B 7(C)
ECU–B
B O
D B
E A
7 1L
9 5E
15 5H
(IG)
J20(A), J21(B)
Junction Connector
7. 5A
O2
ECU–IG
Option Connector
(Glass Breakage Sensor)
3
B
5
GBIG
PRIUS (EM03Q0U)
SIG
2
1
Y BR
6 B
GBS
GBS1
GB+B
1
W–B W–B
IH
17 1E
GND
8
25
HAZ
EHW
Flasher Relay
239
Theft Deterrent
21 1D 24 1D 5 1D 20 1D
R
8 1H
BR
R
6 4F
LG
Y
5 ID2 4 ID2
1 4C
BR
G
R
R
V
3 IM1 4 IM1
LG
8 8 1 4
D12
D7
D8
D9
C10
7
14 24 25
W–B
GR
BR
A
J27
Junction
Connector
A
W–B
5 IE2
4 IG1
W–B
G
A
4 4C J24
Junction
Connector
A
W–B
15 4H
BR
GR
W–B
II IH
240
PRIUS (EM03Q0U)
B 5(A), B 6(B), B 7(C)
Body ECU
O
Y
9 1H 17 1H 3 1D 4 1D 15 4F
7
O
4K
G
G
Y
Y
Junction Connector
C A 6 4K
A Y
C G
O
J22
C A
16 ID3 5 IM2 4 IM2 14 IM1
G
G
Y
O
Y
7 IL2 6 IL2 4 IL1 5 BB1 6 BB1 4 BB1 6 BJ1 5 BJ1 4 BJ1
Door Unlock Detection SW Front RH
O
Y
Y
Door Lock Motor Front RH
1 4 7 4 1 6 1 4 6
M M M
D13
D14
D15
8 9 9
W–B
A
J26
Junction
W–B
W–B
Connector
A
W–B
W–B
A A
J25 J32
Junction Junction
W–B
Connector Connector
A A
W–B
GR GR
B B
W–B
W–B
BL BQ
241
PRIUS (EM03Q0U)
Theft Deterrent
(BAT) 30 1A 2 1O 27 1E 28 1A
(BAT)
Connector
Junction
R B
15A
J33
DOME 10A
B
B HORN
R
Y
2
B
L
3
R
HORN Relay
R
2 4G 6 4L
B
B 7 IB1
1 1
B J6
Junction 2 4J 8 3J 7 3J
Connector
Overhead J/B
DOOR
DOOR
Interior Light
OFF
ON
R
B
L
B
O3
I18
3 2 3 4
13 1A 5 1O 6
W–B
W–B
R
L
Key Slot
K3
8 1L 7 1F 5 IB1 2
R
16 5H
A A
9 5I 1 5G
J23 A
Junction
Connector
(∗4)
R
(∗3)
R
R
(∗3)
R
(∗4)
GR GR
B B
242
PRIUS (EM03Q0U)
∗ 3 : w/ Smart Key System
∗ 4 : w/o Smart Key System
B 5(A), B 6(B), B 7(C)
Body ECU
7 1D
Y
(∗4)
(∗4)
W
G
14 ID2 11 ID2 12 ID2 12 ID4
(∗3)
(∗3)
R
B
L
W–B
(∗3)
(∗3)
(∗4)
(∗4)
R
Y
L
M
+B1 E RSS1 RDA DATA RSS1 GND GND +B GND
S11
D4
1 17 11 10 4 3 2 1 D4 5 1
1 3
W–B
W–B
W–B
W–B
(∗3)
(∗3)
(∗3)
(∗3)
(∗3)
(∗3)
(∗3)
(∗3)
(∗4)
(∗4)
GR
GR
R
R
V
L3
12 ID2 13 ID2
W–B
W–B
12 4L A A A
A
J30 A
5 4H Junction
Connector
W–B
(∗3)
Junction Connector
W–B
R A
11
(∗3) A W–B W–B
ID2
J25
(∗3) (∗3)
A 14
R R R
ID2
(∗4) (∗4) (∗4)
GR GR
B B
W–B
(∗3)
IH BL
243
PRIUS (EM03Q0U)
Theft Deterrent
∗ 3 : w/ Smart Key System
∗ 4 : w/o Smart Key System
B 5(A), B 6(B), B 7(C) G1
Body ECU Gateway ECU
9 1G 9 II1 18
Transmission
MPX2
Control ECU
GR
GR
GR
B
MPX1
T4
8 5K 4 5C 8 5C 14 4I 19
GR
8 5J 13 5J 8 5G 2 4D
8 II1
Power Source Control ECU
GR
GR
B
GR
11 24 16 ID Code Box
MPX2+ MPX2 MPX2
A/C Control
7 4I
Assembly
P6
T5
3 7 17
7 4L A
(Shielded)
W
B
(∗3)
GR
GR
B
Certification ECU
31
MPX1
(∗4)
W
Junction Connector
MPX2
S11
13 5G 11 4D
32
B A
Connector
J17
13 5D 11 4F
(∗3)
Junction
B
J18
B A
P
16 4L A
(Shielded)
A
W
B
14 4K
Tire Pressure Warning ECU
E 4(A), E 6(C)
W–B
3 IG2
MPX2 NE+ NE–
T11
12 33 A 34 A
(Shielded)
GR
BR
Junction Connector
G
R
A A
Connector
Junction
GR
Junction Connector
J12
2 2 13
B W 1 A
J25
IG1 4C 4K A A
Position Sensor
W–B
Crankshaft
BR
J14
A
C7
IH EC 2
G
244
PRIUS (EM03Q0U)
: Parts Location
Code See Page Code See Page Code See Page
A8 48 E4 A 49 J25 50
B5 A 48 E6 C 49 J26 53
B6 B 48 G1 49 J27 53
B7 C 48 I18 53 J30 53
C7 46 J6 50 J32 53
C10 49 J7 A 50 J33 53
D1 49 J8 B 50 K3 50
D4 52 J12 50 L3 53
D7 52 J14 50 O2 51
D8 52 J17 50 O3 54
D9 52 J18 50 P6 51
D10 52 J19 50 S11 51
D12 52 J20 A 50 T1 47
D13 52 J21 B 50 T4 51
D14 52 J22 50 T5 51
D15 52 J23 50 T11 51
E3 46 J24 50
: Relay Blocks
245
PRIUS (EM03Q0U)
Theft Deterrent
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A
30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1B
1D 30 Floor Wire and Driver Side J/B (Lower Finish Panel)
1E
1F
30
1G
Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1H
1K
31
1L
1O 30 Roof Wire and Driver Side J/B (Lower Finish Panel)
3B
23
3D Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
3J 24
4C
4D
4F
4G
4H 38 Instrument Panel Wire and Center Connector No.1 (Behind the Combination Meter)
4I
4J
4K
4L
5C
5D
5E
5G
5H 42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5I
5J
5K
5M
246
PRIUS (EM03Q0U)
: Ground Points
247
PRIUS (EM03Q0U)
Shift Control System
2 2
1 3I 1 1M 3
V
V
Relay
IGCT
16 5L 16 5H 8 1L
W
4 IA1 7 5D 11 5D 13 1A
1 3J 4 3J 2 3J 3 3J
R
W
Y
13 IG2 9 IG2 10 IG1
W–B
O
Y
B
B 9 4C
3 4I
V
V
J6
Junction Connector
22 21 13 9 16 4I
5 4J
V
W
Master
7 IA3
(VFD)
Power
Supply
Circuit
V
BEAN Buzzer
IC
14 25 24 C10
Combination Meter
GR
BR
V
4 4C
2 13
B
4C 4K
15 4H
P
BR
EE II
248
PRIUS (EM03Q0U)
∗ 1 : w/ Smart Key System
∗ 2 : w/o Smart Key System H14(A), H15(B), H16(C), H17(D)
Hybrid Vehicle Control ECU
MREL SPD1
4 C 19 A
GR
V
9 5F
(BAT)
GR
GR
GR
O
(ACC) (IG) 7 5K 15A
AM2
7 4I
4 5C 8 5K 7. 5A
W
7. 5A
ACC ECU– 2
IG
7 4L GR 8 1G 1 3I
V
13 5J 8 5J
9 1G
W
GR
GR
B
(∗1)
GR
16 IG2 8 1F 4 IA1
3 11 17 21 5
Certification ECU
31 8 II1
V
MPX+ MPX2+ MPX1 ACC SIG
W
MPX1
12 5D 9 5K
(∗2)
GR
W
IDH MPX2 3 4I
MPX2
S11
A8 15 A B 5(A)
32 A/C Control Body ECU
Assembly
B
5 5G 8 4J
(∗1)
B
11 4F
R
V
16 4L
11 4D Power Source 19 33
Control ECU SPD AM1
B
14 4K
17 MPX1 AM2 MPX2
P6
ID Code Box
MPX1 7 12 24
W
GR
B
MPX2
T5
6
16
Warning ECU
Tire Pressure
MPX1 13 5G 8 5G
GR
MPX2
T11
2 4D
12 13 5D 8 5C
GR
P
14 4I
V V
B GR
W GR
Y Y
L L
249
PRIUS (EM03Q0U)
Shift Control System
H14(A), H15(B), H16(C), H17(D)
Hybrid Vehicle Control ECU
GR GR
W
L
(BAT)
C B
Connector
Connector
Junction
Junction
G
C 7. 5A B
STOP
J14
J9
C B
18 1A
W
L
P11
B Power SW
2 IA3 12 II1
2 4
Stop Light SW
W
L
S16
4 4I 1 3 2 4I
SS1 SS2 GND
L
5 7 6
W–B
6 4J 4 4J
B
11 5G
W
L
1 5 14 37
STP P SSW1 SSW2
10 5G 5 5L
W–B
W–B
GND2
J25
P6 6 Junction
Power Source Control ECU A Connector
W–B
A A
W–B
W–B
W–B
V V
B B
GR GR
GR GR
Y Y
L L
IH
250
PRIUS (EM03Q0U)
H14(A), H15(B), H16(C), H17(D)
Hybrid Vehicle Control ECU
CANL CANH
9 A
W 8 A
B
GR
∗ 3 : Shielded
O O
W W
G1
12 Gateway ECU
MPD2
CA1H CA1L
17 18
(∗3)
A B
Junction Connector
A (∗3)
Connector
Junction
(∗3) (∗3)
J15
W
W
B
A (∗3)
A B A B
(∗3)
J17
A B B A B A
A
B
Connector
Junction
W–B
(∗3)
W
B
J18
A
13 IA1 12 IA1 11 IA1
A
Connector
(∗3)
W
Junction
A
J16
FL+ FL– FR+ FR– RL+ RL– RR+ RR– SP1 PKB SIL TC
D1
28 D 22 D 32 A 22 A 35 B 27 B 31 C 23 C 22 B 14 C 7 13
W–B
Junction Connector
W
G
R
P
L
A
Junction Connector
W–B B P
J24
B
B B
GR GR
R
GR GR
Y Y
L L
1
P2
Parking Brake SW
W–B
IH
251
PRIUS (EM03Q0U)
Shift Control System
H14(A), H15(B), H16(C), H17(D)
Hybrid Vehicle Control ECU
TC IGSW BATT
6 A 7 A 6 B
O
P
Y
O
W W
G1
Gateway ECU
O
B
7. 5A
IGN
6 5C 7 5C 10 5F 13 4E
6 5E 7 5E 7 5M 4 4G
27 1A 15 1F
O
P
W
O
B
4 5
TX1+ TX1–
M13
Y
Multi–Display
Junction Connector
A
J6
A
Y
W W
B B
GR GR
GR
L L
252
PRIUS (EM03Q0U)
H14(A), H15(B), H16(C), H17(D)
Hybrid Vehicle Control ECU
+B2 +B1
6 C 7 C
L
W W
(BAT)
30A
P CON MTR
3 3C S1
Shift Control Actuator
G
1 3
P CON MTR
L
Relay
Junction Connector
A
W–B
J3
G
B
A 12 EB1
GR
LG
W
O
R
11 EB1
L
G
B
1 EB1 14 10 11 12 16 4 5 6 17
BMA MWA MVA MUA E2 RZ1 RB RA VC
L
W
B
L
W 7 II1
9
B LG
II1
W
GR
11 5H 3 1L 3 5I
W–B
8 5M 7 1E 11 5K
W W
L
W–B W–B
W–B
EF
253
PRIUS (EM03Q0U)
Shift Control System
H14(A), H15(B), H16(C), H17(D)
Hybrid Vehicle Control ECU
W–B
W–B
Y
(BAT)
W 7. 5A
P CON MAIN
M11
5 Main SW
L
2 IJ1
6 3 4
W–B
R
Y
L
D D
J10 D 6 5A 1 5A
Junction
Connector
W–B
W–B
L
9 EB1 14 II1 6 5L 8 5H
13 5F 12 5F
W–B
LG
W
Y
L
8 7 13 9
PPOS PCON BATT IND 2 5L
9 IA2
E02 E1 E01
W–B
Y
2 T4 15 3
Transmission
W–B
W–B
W–B
Control ECU A
W–B A J24
Junction
B B B B Connector
J12(A), J13(B)
A
Connector
Junction
W–B
B A B A B A B A B A B A
W–B
W–B
8 EB1 W–B
W–B
W–B
W–B
W–B
IH
254
PRIUS (EM03Q0U)
∗ 3 : Shielded
H14(A), H15(B), H16(C), H17(D)
Hybrid Vehicle Control ECU
VSX4 VCX4 VSX3 VCX3 VSX2 E2X2 VCX2 VSX1 E2X1 VCX1
30 A 31 A 23 A 21 A 24 A 14 A 16 A 25 A 15 A 17 A
(∗3)
BR
SB
W
G
R
P
B
L
W–B
8 A 6 A 5 A 3 A 4 B 5 B 6 B 1 B 2 B 3 B
VSX4 VCX4 VSX3 VCX3 VSX2 E2X2 VCX2 VSX1 E2X1 VCX1
S 4(A), S 5(B) 14 4E
Shift Lever Position Sensor
4 4H
W–B
Junction Connector
A
J25
W–B W–B
W–B W–B
W–B W–B
W–B W–B
W–B
255
PRIUS (EM03Q0U)
Shift Control System
H14(A), H15(B), H16(C), H17(D)
Hybrid Vehicle Control ECU
G
R
B
(∗3)
(∗3)
(∗3)
(∗3)
(∗3)
(∗3)
W
G
R
B
3 6 2 5
GRF GRFG GSN GSNG
M5
W–B Motor Generator No. 1
W–B
W–B
W–B
256
PRIUS (EM03Q0U)
∗ 3 : Shielded
H14(A), H15(B), H16(C), H17(D)
Hybrid Vehicle Control ECU
GCS GCSG MRF MRFG MSN MSNG MCS MCSG MMT MMTG OMT OMTG
23 D 24 D 34 D 33 D 20 D 19 D 32 D 31 D 18 D 28 D 30 D 29 D
BR
BR
G
G
R
R
Y
B
L
(∗3)
(∗3)
(∗3)
(∗3)
(∗3)
(∗3)
(∗3)
(∗3)
BR
BR
G
G
R
R
Y
B
L
1 4 1 D 4 D 2 D 5 D 3 D 6 D 1 E 4 E 3 E 6 E
GCS GCSG MRF MRFG MSN MSNG MCS MCSG MMT MMTG OMT OMTG
M5 M 9(D), M10(E)
Motor Generator No. 1 Motor Generator No. 2
257
PRIUS (EM03Q0U)
Shift Control System
System Outline
Under this system, operating signal of shift lever is sent to hybrid vehicle control ECU to control hybrid motor, which changes
shift positions (R, N, D, B) electrically. When shift is put in P position, transmission control ECU receives operating signal
from hybrid vehicle control ECU and activates parking lock electrically.
1. Shift Range Change Function
Gear can be shifted to any shift range under condition when vehicle can drive except when reject function is in operation.
When vehicle cannot drive with power SW at IG ON position, gear can be shifted only to P and N position.
When vehicle cannot drive with power SW at ACC ON position, gear can be shifted only to P position.
When power SW is at OFF position, gear cannot be shifted to any position.
When main SW is operated at vehicle stop after starting hybrid system, gear is automatically changed to P position from any
other gear position and turns off power supply.
2. Reject Function
Changing gear may not effect to change position under certain vehicle condition. Under such condition, warning buzzer of
combination meter sounds to show the rejection and call for driver’s attention. Followings are shift operations and shift
position conditions under which reject function is activated.
∗ When gear is shifted from P position to other position without applying brake pedal, gear stays in P position.
∗ Main SW cannot put gear in P position during driving but changes to N position.
∗ Shift change to forward or backward during driving changes gear to N position.
∗ When gear is changed from other position than D position to B position, gear is changed to N position automatically.
3. Combination Meter Indication
The combination meter shows present shift position. Other shift positions than D or B position are not shown in lighting in the
combination meter. This is to avoid unnecessary shifting operation to B position from other shift position except D position.
4. Operation of Parking Lock
Operation signal from/to P position is sent from main SW or power SW to transmission control ECU through hybrid vehicle
control ECU. At that time the transmission control ECU operates P CON MTR relay, activates parking lock actuator with
appropriate control of electric current, and lights up main SW when shift is at P position. If the system has abnormality on
parking lock operation, it tells the system abnormality to the driver by lighting up master warning light on combination meter,
displaying warning of the system abnormality on the multi–display, and blinking indicator light of main SW.
5. Operation at Electric Power OFF
Under electric power OFF, transmission control ECU receives signal from power source control ECU by
multi–communication, and sends shift position information to hybrid vehicle control ECU. The hybrid vehicle control ECU
sends signal to power source control ECU to tell whether it is right or wrong condition to turn off electric power. Accepted
conditions for electric power OFF are as follows;
∗ When hybrid vehicle control ECU is not sending request signal for parking lock release with shift position in P position.
∗ With shift position is at other position than P position, when hybrid vehicle control ECU is outputting signal that hybrid
system is not running or request signal for parking lock.
∗ When there is abnormal motor’s not running condition with paring lock in operation, and hybrid system is not running and
parking brake is being applied.
: Parts Location
Code See Page Code See Page Code See Page
A8 48 J13 B 50 P6 51
B5 A 48 J14 50 P11 51
C10 49 J15 50 S1 47
D1 49 J16 50 S4 A 51
G1 49 J17 50 S5 B 51
H14 A 49 J18 50 S7 A 51
H15 B 49 J24 50 S8 B 51
H16 C 49 J25 50 S9 C 51
H17 D 49 M5 47 S10 D 51
J3 47 M9 D 47 S11 51
J6 50 M10 E 47 S16 51
J9 50 M11 50 T4 51
J10 50 M13 50 T5 51
J12 A 50 P2 51 T11 51
258
PRIUS (EM03Q0U)
: Relay Blocks
Code See Page Junction Block and Wire Harness (Connector Location)
1A 30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1E
1F 30
1G Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1L
31
1M
3C 23
3I Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
24
3J
4C
4D
4E
4F
4G
38 Instrument Panel Wire and Center Connector No.1 (Behind the Combination Meter)
4H
4I
4J
4K
4L
5A
5C
5D
5E
5F
5G
42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5H
5I
5J
5K
5L
5M
259
PRIUS (EM03Q0U)
Shift Control System
: Ground Points
260
PRIUS (EM03Q0U)
Memo
261
PRIUS (EM03Q0U)
Cruise Control
G
2 2 2
1 1M 3 R
Relay
IGCT
G
R
R
V
B
1 3J 4 3J 2 3J 3 3J 8 3I 6 3I 5 3I
W–B
O
Y
B
16 5L J6
Junction EFI M
Connector Relay
B
7 5D
R
Y
7 3I
13 1A
W–B
8 1L
P
16 5H
11 5D
L
W–B
Y
W–B
EE EE
262
PRIUS (EM03Q0U)
∗ 1 : Shielded
(BAT)
10A
ETCS
B
G T2
2
Throttle Control Motor
R 2
M+ M–
C2
2 1 1
B
A
J1
Junction
(∗1)
Connector
W
P
Y
L
A
GR
G
R
6 D 7 D 4 D 5 D 6 B 5 B 4 B 15 A 14 A
BATT MREL +B +BM M+ M– GE01 OCV+ OCV–
VC VTA VTA2 E2
18 A 32 A 31 A 28 A E 4(A), E 5(B), E 6(C), E 7(D)
Engine Control Module
BR
(∗1)
R
(∗1)
E 2 3
Connector
Junction
VTA1 VTA2
Throttle Position Sensor
J14
E
R
VC
T3
1 4
BR
R
L L
Y Y
O O
L L
Y Y
263
PRIUS (EM03Q0U)
Cruise Control
∗ 1 : Shielded
P
E 4(A), E 5(B), E 6(C), E 7(D)
Engine Control Module 9 C 14 C
IGSW TC
BR
BR
BR
BR
LG
W
B
Y
(∗1) 3 4E
Junction Connector
A B 11 4I
J12(A), J13(B)
A A A A
BR
BR
13 II1 LG
B
BR
BR
BR
BR
B
L L
Y Y
O O
L L
Y Y
EC ED
264
PRIUS (EM03Q0U)
H14(A), H15(B), H16(C), H17(D)
Hybrid Vehicle Control ECU
MREL SPDI
4 C 19 A
O O
P P
V
O
9 5F
7 5K
W
8 1G
CRUISE
Buzzer (VFD)
Power
Supply 8 1F
Circuit
V
Combination Meter
9 5K
BEAN
IC
C10
12 5D
21 22 14 25 24 13 9
GR
BR
Y
W
9 IG2 13 IG2 4 IG1 3 IG2 2 IG1 16 IG2 10 IG1
W
W
G
Y
Y
L
2 4C
13 4K
B
Y Y
LG LG
B B
W W
L 4 4C B
Y P
O 15 4H Y
L L
Y Y
BR
II
265
PRIUS (EM03Q0U)
Cruise Control
H14(A), H15(B), H16(C), H17(D)
Hybrid Vehicle Control ECU
O O
P P
GR
GR
7 4I 8 II1 GR
GR
GR
7 4L 4 5C 8 5K
LG
W
Y
B
GR
(∗2)
(∗1)
GR
13 5J 8 5J
9 1G
W
B
Certification ECU
(∗1)
GR
GR
31 A
B
MPX1
19 3 11 17
(∗3)
W
A (∗1) (∗1)
Transmission
Body ECU
MPX2
S11
B 5(A)
32
MPX2 MPX2 B A
T4
A8 15 A
(∗2)
18
B
A/C Control
Assembly
B
16 4L B A J18
11 4F Junction
Junction Connector
9 II1 Connector
14 4K
11 4D A (∗1) (∗1)
B
J17
W
W
B
B
A
14 4I
W–B
6 17
Warning ECU
Tire Pressure
ID Code Box
MPX1 MPX1
A
Connector
2 4D
Junction
MPX2 MPX2
T11
T5
J25
12 16 A
GR
LG
P P
9 16
Y V
4C 4I
L L
Y Y
W–B
266
PRIUS (EM03Q0U)
H14(A), H15(B), H16(C), H17(D)
Hybrid Vehicle Control ECU
TC
6 A
O O
P
GR
∗ 1 : Shielded
∗ 2 : w/ Smart Key System
∗ 3 : w/o Smart Key System
G1
12 Gateway ECU
MPD2
GR
P
J16 J15 8 5C 11 5F 10 5F
(∗1) (∗1) Junction Junction Connector A B
Connector
W
W
B
(∗1) A
B A A B 8 5G 7 5M
B A B A
P
A W (∗1)
B
A (∗1)
J18
W
B
Junction Connector
14 6 24
W–B
A TC MPX1
Connector
D1
P6
Junction
A
13 7
J24
GR
P
W
G
R
V
B
L
7 IA3
L L
Y Y
W–B
IH
267
PRIUS (EM03Q0U)
Cruise Control
H14(A), H15(B), H16(C), H17(D)
Hybrid Vehicle Control ECU
O Y
L
O
(BAT) (IG)
G
L
7. 5A 7. 5A
STOP IGN
12 4E 13 4E
18 1A
B 27 1A 15 1F 4 4G
2 4
O
Stop Light SW
S16
1 3
L
L
A C
Connector
Junction
A C J9
Junction
J3
Connector
A
Y
L
A
Connector
Junction
J6
A
Y
268
PRIUS (EM03Q0U)
∗ 1 : Shielded
H14(A), H15(B), H16(C), H17(D)
Hybrid Vehicle Control ECU
VSK4 VCK4 VSX3 VCX3 VSX2 E2X2 VCX2 VSX1 E2X1 VCX1
30 A 31 A 23 A 21 A 24 A 14 A 16 A 25 A 15 A 17 A
(∗1)
BR
SB
W
G
R
P
B
L
W–B
8 A 6 A 5 A 3 A 4 B 5 B 6 B 1 B 2 B 3 B
VSX4 VCX4 VSX3 VCX3 VSX2 E2X2 VCX2 VSX1 E2X1 VCX1
S 4(A), S 5(B) 14 4E
Shift Lever Position Sensor
4 4H
W–B
Junction Connector
A
J25
W–B
269
PRIUS (EM03Q0U)
Cruise Control
H14(A), H15(B), H16(C), H17(D)
Hybrid Vehicle Control ECU
W–B
V
6 5F
BR
W
G
R
B
Y
6 5B
G
C12
1 Combination SW
CCS
Cruise Control SW
R
3
ON–OFF
CANCEL
+RES
–SET
4
B
ECC
2
W–B
W–B
(∗1)
13 5F 12 5F 5 5B
(∗1)
2 5L
(∗1)
BR
W
G
R
B
Y
W–B
3 6 2 5 1 4
GRF GRFG GSN GSNG GCS GCSG
A
J24
Junction
Connector
A
M5
Motor Generator No. 1
W–B
W–B
IH
270
PRIUS (EM03Q0U)
∗ 1 : Shielded
H14(A), H15(B), H16(C), H17(D)
Hybrid Vehicle Control ECU
MRF MRFG MSN MSNG MCS MCSG MMT MMTG OMT OMTG
34 D 33 D 20 D 19 D 32 D 31 D 18 D 28 D 30 D 29 D
BR
G
G
R
R
P
B
L
(∗1)
(∗1)
(∗1)
(∗1) (∗1)
(∗1) (∗1)
(∗1) (∗1)
BR
G
G
R
R
P
B
L
W–B
W–B
W–B
W–B
B A B A B A B A
1 D 4 D 2 D 5 D 3 D 6 D 1 E 4 E 3 E 6 E
MRF MRFG MSN MSNG MCS MCSG MMT MMTG OMT OMTG
J12(A) B A
Junction Connector
W–B
M 9(D), M10(E)
Motor Generator No. 2 8 EB1
W–B
EF
271
PRIUS (EM03Q0U)
Cruise Control
System Outline
Cruise control is the speed control device, which can set desired speed by just operating the switch on the control panel
without applying the accelerator pedal. The device can be used when driver would like to drive the vehicle at fixed speed.
1. Set Control
If the cruise control switch is pushed to – SET side and hand is released from the switch during driving, (The available range
of set speed: between 40 and 200 km/h) with the ON–OFF switch at ON (Power indicator comes on), the device stores
vehicle speed at that time and controls it constantly at the set speed.
2. Set Speed Control
The device compares the actual vehicle speed with the set speed, and controls the driving power of the motor and the
engine by calculating the cruise control requirements to drive it constantly at the set speed.
3. Coast Control
If the cruise control switch is kept pushed to the – SET side during driving in the cruise control mode, the device recognizes
the cruise control requirement is at zero and decelerates the vehicle speed. When hand is released from the cruise control
switch, the device stores the vehicle speed while the vehicle speed is decelerating. From then on, vehicle speed is
controlled to stay at that speed.
Every time the switch is operated to – SET side momentarily (For about 0.5 seconds), the set speed is decreased by about
1.6 km/h. However, in case of tap–down operation to make more than 5 km/h gap between the set speed and the actual
vehicle speed, the device recalls the original set speed and controls it at the speed constantly.
4. Accel Control
If the cruise control switch is kept pushed to the + RES side during driving in the cruise control mode, the device recognizes
the cruise control is on the acceleration side and accelerates the vehicle speed. When hand is released from the cruise
control switch, the device stores the vehicle speed at that time and controls it with the set speed constantly.
Every time the switch is operated to + RES side momentarily (For about 0.5 seconds), the set speed is increased by about
1.6 km/h. However, in case of tap–up operation to make more than 5 km/h gap between the set speed and the actual vehicle
speed, the device does not change the set speed. (Tap–up operation is not available.)
5. Resume Control
After the cruise control mode is cancelled by any one the cancel switches, the mode can be resumed and controlled at the
set speed by operating the cruise control switch in the + RES direction providing that the vehicle speed has not dropped
below the low speed limit [Approx. 40 km/h (25 mph)].
The mode cannot be resumed if the vehicle speed once drops below the low speed limit, because the speed in the memory
is cleared.
6. Manual Cancel Control
If any of the following signals is sent to the device while the vehicle is running in the cruise control, the cruise control is
cancelled accordingly.
∗ Stop light switch: ON (Depressing the brake pedal)
∗ CANCEL switch of control switch: ON
∗ ON–OFF switch: OFF
7. Auto Cancel Function
A) The set speed is cleared and the cruise control is canceled under the following conditions. The cruise main indicator
blinks until the main switch is turned OFF. The speed control is unavailable unless the main switch is turned ON again.
∗ When the stop light switch open or short–circuits.
∗ When signal of sudden change in the vehicle speed is sent.
B) The set speed is cleared and the cruise control is canceled under the following conditions.
∗ When there is malfunction of the stop light switch input circuit.
∗ When the vehicle speed becomes lower than 40 km/h.
∗ When the vehicle speed becomes lower than the speed that 16 km/h is subtracted from the set speed.
272
PRIUS (EM03Q0U)
: Parts Location
Code See Page Code See Page Code See Page
A8 48 J1 47 M10 E 47
B5 A 48 J3 47 P6 51
C2 46 J6 50 S4 A 51
C10 49 J9 50 S5 B 51
C12 49 J12 A 50 S7 A 51
D1 49 J13 B 50 S8 B 51
E4 A 49 J14 50 S9 C 51
E5 B 49 J15 50 S10 D 51
E6 C 49 J16 50 S11 51
E7 D 49 J17 50 S16 51
G1 49 J18 50 T2 47
H14 A 49 J24 50 T3 47
H15 B 49 J25 50 T4 51
H16 C 49 M5 47 T5 51
H17 D 49 M9 D 47 T11 51
: Relay Blocks
Code See Page Junction Block and Wire Harness (Connector Location)
1A 30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1F
30
1G
Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1L
31
1M
3I
24 Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
3J
4C
4D
4E
4F
4G 38 Instrument Panel Wire and Center Connector No.1 (Behind the Combination Meter)
4H
4I
4K
4L
5B
5C
5D
5F
5G
42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5H
5J
5K
5L
5M
273
PRIUS (EM03Q0U)
Cruise Control
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
EB1 56 Engine Wire and Engine Room Main Wire (Inside of the Engine Room R/B)
IA1
58 Engine Room Main Wire and Instrument Panel Wire (Upper Parts of Front Body Pillar LH)
IA3
IG1
59 Instrument Panel Wire and Instrument Panel No.2 Wire (Behind the Combination Meter)
IG2
II1 59 Engine Wire and Instrument Panel Wire (Behind the Glove Box)
: Ground Points
274
PRIUS (EM03Q0U)
Memo
275
PRIUS (EM03Q0U)
EPS
2 2
S 7(A), S 8(B), S 9(C), S10(D)
1 1M 3 7 1L 2 3C Skid Control ECU
R
B
J6 FL+ FL– FR+ FR– RL+ RL– RR+ RR–
Junction
Connector 28 D 22 D 32 A 22 A 35 B 27 B 31 C 23 C
W
O
B
W
G
R
B
L
R
V
13 1A
8 1L
P
9 5C
16 5L 16 5H
7 5D 11 5D
Y
P 9(D)
13 IG2 9 IG2 Power Steering Motor
B
V
C10
22 21 Combination Meter
W
W
W
Master
Power 6 B 1 A 1 D 2 D 7 B 1 B 2 B
Supply
Circuit (VFD) IG PIG M1 M2 CANL CANH SIL
14 9 25 24
W
R
B
Y
GR
BR
4 IG1 10 IG1
W–B
P10(C)
Power Steering Torque Sensor
G
4 4C 9 4C
15 4H 16 4I GR
V V
BR
II IG
276
PRIUS (EM03Q0U)
(BAT) (IG)
7. 5A 7. 5A
STOP IGN
J17
O
B
Junction
SP1 CAN–L CAN–H STP Connector
22 B 18 B 19 B 14 B 2 3 A (Shielded)
Stop Light SW
(Shielded)
R
V
S16
A
1 4
G
L
13 IA1 12 IA1 11 IA1
C
Connector
Junction
J9
C
(Shielded)
(Shielded)
W
G
J15
A B Junction Connector
A B A B B A
(Shielded)
W
W
B
B
(Shielded)
W W
B 14 6 B
CANL CANH
W
Connector 3
W–B
Data Link
SIL
D1
11 8
W W
5C 5M
A A A A A
J16 J25
Junction Junction
Connector Connector
A A
W–B
V
A
W–B
J24
Junction
7 IA3 Connector
A
B B
GR GR
V W–B
W–B
IH
277
PRIUS (EM03Q0U)
EPS
G1
Gateway ECU
CA1L CA1H
18 17
(Shielded)
W
A B
Connector
Junction
J18
A B B A (Shielded)
W
W
B
H14(A), H15(B)
2 B 8 A 9 A Hybrid Vehicle Control ECU
ST1– CANH CANL
B VSK4 VCK4 VSX3 VCX3 VSX2 E2X2 VCX2 VSX1 E2X1 VCX1
30 A 31 A 23 A 21 A 24 A 14 A 16 A 25 A 15 A 17 A
(Shielded)
BR
SB
W
G
R
P
B
L
8 A 6 A 5 A 3 A 4 B 5 B 6 B 1 B 2 B 3 B
W–B
VSX4 VCX4 VSX3 VCX3 VSX2 E2X2 VCX2 VSX1 E2X1 VCX1
14 4E
S 4(A), S 5(B)
Shift Lever Position Sensor
4 4H
W–B
A
Connector
Junction
J25
A
B B
GR GR
W–B
IH
278
PRIUS (EM03Q0U)
G1
Gateway ECU
GR
W
B
GR
GR
8 II1
7 4I 4 5C 8 5C 6 5C 7 5C
GR
7 4L 19 13 5J 8 5G 6 5E 7 5E
Transmission
MPX1
Control ECU
(∗1)
GR
B
MPX2
T4
31
MPX1
B
3 24
(∗2)
W
W
B
MPX+ MPX2
A/C Control
MPX2
S11
9 II1
Assembly
32
MPX2+ MPX1
A8
P6
(∗1)
11 7
B
16 4L 4 5
GR
GR
14 4I TX1+ TX1–
Multi–Display
14 4K
M13
2 4D 8 5J 13 5G
W
GR
6 8 5K 13 5D
Warning ECU
Tire Pressure
MPX1
16
GR
ID Code Box
MPX2
P
MPX2
T11
12
MPX1 9 1G
T5
17 3 IG2
B
13 4K 17
B
MPX1
Body ECU
GR
B 5(A)
2 4C 11 4D MPX2
15 A
W
2 IG1
11 4F
B
B B
GR
279
PRIUS (EM03Q0U)
EPS
System Outline
This is a system to assist the driver to steer the vehicle with easy steering force. Based on torque signal of steering from
power steering torque sensor, and vehicle speed and other vehicle information from skid control ECU, power steering ECU
calculates assisting current to control power steering motor.
Under the system in abnormality, power source relay and motor relay in power steering ECU is shut down and master
warning lamp on combination meter blinks as well as P/S warning is indicated, resulting to stop the assistance.
: Parts Location
Code See Page Code See Page Code See Page
A8 48 J17 50 S5 B 51
B5 A 48 J18 50 S7 A 51
C10 49 J24 50 S8 B 51
D1 49 J25 50 S9 C 51
G1 49 M13 50 S10 D 51
H14 A 49 P6 51 S11 51
H15 B 49 P7 A 51 S16 51
J6 50 P8 B 51 T4 51
J9 50 P9 D 51 T5 51
J15 50 P10 C 51 T11 51
J16 50 S4 A 51
: Relay Blocks
Code See Page Junction Block and Wire Harness (Connector Location)
1A 30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1G 30
1L Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
31
1M
3C 23 Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
4C
4D
4E
4F
38 Instrument Panel Wire and Center Connector No.1 (Behind the Combination Meter)
4H
4I
4K
4L
5C
5D
5E
5G
5H 42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5J
5K
5L
5M
280
PRIUS (EM03Q0U)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA1
58 Engine Room Main Wire and Instrument Panel Wire (Upper Parts of Front Body Pillar LH)
IA3
IG1
59 Instrument Panel Wire and Instrument Panel No.2 Wire (Behind the Combination Meter)
IG2
II1 59 Engine Wire and Instrument Panel Wire (Behind the Glove Box)
: Ground Points
281
PRIUS (EM03Q0U)
282
8
2
14
W–B W–B L L L
BC
BQ
5 IN1
GND
(BAT)
15A
ABS
MAIN3
1
5
10
V V V B B
IG
6 1F
21 1D
2 IM1
7 IM1
DCTY
D7
ABS, TRAC and VSC
13
P P
10 IK1
FAIL
7
12
B B W W
9 IK1
6 IN1
ENA
OUT2
2
1
V V Y Y
8 IK1
7 IN1
OUT
BCTY
B18
Brake Control Power Supply
S 2(A), S 3(B)
PRIUS (EM03Q0U)
Short Connector
2
BR BR
2 B
2 A
BCSS
J1
Junction
Connector
B
B
1
B P P
1 B
1 A
BSR
B17
Brake Master Stroke
Simulator Cylinder Assembly
Y
B
B
3
5
B B Y
3
3
C A
A B
1
2
P
3
3
C A
B
P
B
V
B
P
Y
B
BR
(BAT) (BAT)
25A 30A
ABS–1 ABS–2
2 2
3 4 3C
L
W
B
C
Connector
Junction
C W W
J6
C
Y Y
L L
L
W
L G
P
3 3 3 3 3 3 30 D 25 A
MR2 MR1
D B
5 2 5 1 5 1 S 7(A), S 8(B), S 9(C), S10(D)
Junction Connector
ABS MTR
J 7(A), J 8(B)
Relay
Relay
MR2+ MR1+
Relay
F A F A 25 D 11 A
3 1 3 2 3 2
3 3 3 3 3 3
R
R
GR
G
P
GR
P P
B B
BR BR
V V
B B
P P
B B
283
PRIUS (EM03Q0U)
ABS, TRAC and VSC
(BAT) (BAT)
10A 10A
ABS ABS
MAIN1 MAIN2
2 2
3 3
R
B
B B
B8
Brake Pedal Stroke Sensor
Y
VCSK SKG SKS1 SKS2
L
3 1 4 2
(∗1)
G
R
B
W
R
B
15 D 12 A 5 B 4 C 3 B 5 C 6 C 8 C 21 C 22 C 7 C
SR2 SR1 +BO1 +BO2 +BI1 +BI2 VCSK SKG SKS1 SKS2 SSK
S 7(A), S 8(B), S 9(C), S10(D)
Skid Control ECU
R2+ BS2 R1+ BS1 SCSS +BCTY ENA FAIL MTT SLAFR+ SLAFR– SLRFR+
17 D 7 D 2 A 3 A 13 A 5 A 30 B 20 B 29 A 7 A 6 A 17 A
BR
W
R
R
P
Y
2
Brake Actuator
Y
Resistor
P 33 8 5 22
B19
P
1
B
W
B
BR
2 IP1 1 IP1
V
B
G
1 2 7 19
R R
G P
P P
B B
284
PRIUS (EM03Q0U)
∗ 1 : Shielded
A25 A26
ABS Speed Sensor Rear LH ABS Speed Sensor Rear RH
1 2 1 2
W
L
L
B B
S6
Skid Control Buzzer
(∗1)
(∗1)
W
W
B
B
2 IF1 3 IF1 4 IF1 8 IN1 9 IN1 10 IN1
BZ VBZ
1 2
(∗1)
B
BR
BR
(∗1)
BR
12 B 33 B 35 B 27 B 31 C 23 C
BZ VBZ RL+ RL– RR+ RR–
S 7(A), S 8(B), S 9(C), S10(D)
Skid Control ECU
SLRFR– SLAFL+ SLAFL– SLRFL+ SLRFL– SLARR+ SLARR– SLRRR+ SLRRR– SLARL+ SLARL– SLRRL+ SLRRL– SMC1 SMC2
34 A 1 D 2 D 8 D 26 D 19 D 9 D 20 D 18 D 15 A 27 A 16 A 26 A 4 A 3 D
BR
LG
LG
W
O
R
B
Y
L
21 13 14 27 28 12 11 26 25 10 9 24 23 20 6
FR– FL+ FL– FL+ FL– RR+ RR– RR+ RR– RL+ RL– RL+ RL– SMC1 SMC2
A2
ABS & BA & TRAC & VSC Actuator
285
PRIUS (EM03Q0U)
ABS, TRAC and VSC
B B
A3 A4
ABS Speed Sensor Front LH ABS Speed Sensor Front RH
2 1 2 1
(∗1)
(∗1)
J9 J9
G
R
L
Junction Junction
Connector Connector
BR D BR A
BR D D BR BR A A BR
10 B 28 D 22 D 32 A 22 A 13 D
RSS FL+ FL– FR+ FR– FSS
S 7(A), S 8(B), S 9(C), S10(D)
Skid Control ECU
(∗1)
W
G
R
B
P
L
B (∗1)
A
42 40 43 39 41 44 35 45
PCK2 VCM2 PMC2 PFL PRR E2 VCM1 E1
A2
ABS & BA & TRAC & VSC Actuator
286
PRIUS (EM03Q0U)
(IG) (BAT) (IG)
7. 5A 7. 5A 7. 5A
IGN STOP ECU–IG
9 1A 18 1A
24 1A 7 1L
O O
B
B B
2
∗ 1 : Shielded
S16
Stop
Light SW
1
L
C B
J9 J4
Junction Junction
Connector Connector
C B
O
B
5 D 14 B 7 B
IG2 STP IG1
S 7(A), S 8(B), S 9(C), S10(D)
Skid Control ECU
PCK1 PACC PMC1 PFR PRL GND GND2 GND3 GND4 GND5 GND6 LBL PKB
31 A 21 A 30 A 23 A 18 A 1 A 2 B 1 B 2 C 1 C 4 D 6 D 14 C
W–B
W–B
W–B
Junction Connector
W
R
P
(∗1)
W
G
R
B
J9
Brake Fluid Level Warning SW
37 46 38 34 36
R
2 1
B1
P2
1
W–B
W–B
GND2 GND1
A2 32 31
ABS & BA & TRAC & VSC
Actuator
W–B
W–B
W–B
EF EE EA
287
PRIUS (EM03Q0U)
ABS, TRAC and VSC
P
(BAT)
W
15A B
DOME
R
O
Connector
Junction
J6
O
B
B
(∗1)
R
P
8 5I 15 5H
(∗1)
B
13 1A 8 1L
8 5L 9 5E
7 1F (∗1)
B
E
Connector
7 5L
Junction
R
J20
A
E
S 7(A), S 8(B), S 9(C), S10(D) J23
Skid Control ECU Junction
5 5I
B
Connector
A
5 2 3
B
R
IG CANL CANH
3 1
Steering Sensor
W
V
B
L
2 9 10
W–B
B
W–B
V
B
6 5H 1 5H
W
B
8 5M 2 5M
W
W
W
B
L
W–B
W–B
7 12 6 14
Junction Connector
A A
A W–B A W–B
Connector
Junction
J24
D1
J25
W–B A
Connector
W–B
Junction
J5
IH IK
288
PRIUS (EM03Q0U)
∗ 1 : Shielded
P P
B G1
Gateway ECU
CA1H CA1L
E 4(A), E 6(C), E 7(D)
Engine Control Module 17 18
W
B
B
(∗1)
28 A 21 D 30 C 31 C
BR
B A B A
3 EB1 B B
W
W A J18
BR
1 2 Junction Connector
(∗1) A
B A B A
A
Junction Connector
A6
(∗1) Ambient Temp. Sensor A
A13 A
Accel Position Sensor
J17
(∗1)
W
B
A
5 2 3 1 6 4
W–B
(∗1)
W
G
R
B
Y
L
(∗1)
27 C 35 C 34 C 33 C 26 C 25 C 8 A 9 A
EP1 EP2 VPA2 VCP2 VPA1 VCP1 CANH CANL (∗1)
W
B
H14(A), H16(C) A
Hybrid Vehicle Control ECU
B A
Connector
Junction
J15
B A B A B A B A
A
Junction Connector
(∗1)
W
B
(∗1)
A
W
B
(∗1)
A
W
B
J16
(∗1)
A
B
(∗1)
W
W
B
1 B 7 B
Power Steering ECU
B CANH CANL
P 8(B), P 9(D)
W
M1 M2
B 1 D 2 D
R
P 9(D)
Power Steering Motor
W–B
W–B
V V
289
PRIUS (EM03Q0U)
ABS, TRAC and VSC
P P
W
B
GR
9 II1
4 5C 14 4I 6 5C 7 5C
8 5C
B
18
13 5J 2 4D 6 5E 7 5E
Transmission
MPX2
Control ECU
8 5G
T4
GR
W
B
B
19
3 16 24
GR
4 5
ID Code Box
TX1+ TX1–
8 II1
MPX2+ MPX1 MPX1
A8
P6
T5
11 17 7
GR
M13
Multi–Display
7 4I
GR
7 4L GR
8 5J 11 4D 13 5G
(∗2)
GR
Certification ECU
8 5K 11 4F 31 13 5D
MPX1
P
(∗3)
MPX2
S11
W
32
GR
(∗2)
B
16 4L
9 1G
17 14 4K
MPX1
Body ECU
W
B 5(A)
MPX2 6
Warning ECU
Tire Pressure
15 A MPX1
MPX2 P
T11
12
B
13 2
B W
4K 4C
V V
290
PRIUS (EM03Q0U)
∗ 2 : w/ Smart Key System
∗ 3 : w/o Smart Key System
P
(IG)
10A
GAUGE
1 1M
V
16 5L
7 5D
P
16 5H
11 5D
Y
13 IG2 9 IG2
V
22 21
READY
Control
Brake
VSC
Brake
ABS
Slip
Power
Supply
Circuit
BEAN IC
(VFD)
25 24 9 14 C10
Combination Meter
GR
BR
B
G
P
9 4C 4 4C
W
16 4I 15 4H
V
BR
II
291
PRIUS (EM03Q0U)
ABS, TRAC and VSC
System Outline
1. ABS Operation
If the brake pedal is depressed suddenly, the ABS controls the hydraulic pressure of all the four wheel cylinders to
automatically avoid wheel locking and to ensure the directional and steering stability of the vehicle. Under the situation, the
skid control ECU controls the solenoids in the actuators, using the signals from the sensors to move the brake fluid to the
reservoir in order to release the braking pressure applied to the wheel cylinder. If the skid control ECU detects that the fluid
pressure in the wheel cylinder is insufficient, the ECU controls the solenoids in the actuators to increase the braking
pressure.
2. Electronic Brake–Force Distribution
Skid control ECU distributes appropriate brake–force to front and rear wheels (Control of brake–force distribution to front and
rear wheels) corresponding to the vehicle driving conditions. It also makes effective use of rear wheel brake–force to match
loading condition and decelerating of the vehicle, resulting to reduce depressing of brake pedal and to ensure effective
braking. In braking during making a turn, the ECU controls appropriate brake–force distribution to right and left wheels
(Control of brake–force distribution to right and left wheels) to ensure stability and braking of the vehicle.
3. Brake Assist System
Skid control ECU recognizes emergency braking from detecting applying speed of brake pedal and brake travel, and
controls braking effectiveness to supply strong brake–force for the emergency braking.
4. VSC Operation (w/ VSC)
Unexpected road conditions, emergency situation, and any other external factors may cause large under– or over–steering
of the vehicle. If they occur, the VSC system automatically controls the driving power and wheel brakes to reduce the under–
or over–steering.
To reduce large over–steering :
If the VSC system determines that the over–steering is large, it activates the brakes for the outer turning wheels depending
on the degree of the over–steering to produce the moment toward the outside of the vehicle and reduce the over–steering.
To reduce large under–steering :
If the VSC system determines that the under–steering is large, it controls the driving power and activates the front wheel
brakes and rear inner side wheel brake to reduce the under–steering.
If there is malfunction in the VSC system, the VSC indicator lights up to warn the driver.
5. Mutual System Control
Due to cooperative control with hybrid vehicle control ECU, skid control ECU controls hydraulic brake to collect much
electrical energy by making the most use of regenerative brake.
Skid control ECU also improves stability of the vehicle, performing cooperative control with power steering ECU to give
steering torque assistance, corresponding to driving conditions. (w/ VSC)
6. Electric Source Backup Function
Electric charge is stored in brake control power supply. If voltage of vehicle electricity is declined, electric charge is released
to cover electric supply to the system.
7. Fail Safe Function
Skid control ECU monitors the system component parts electrically. In case there is abnormality in ECU, sensor signal and
actuator, normal parts except parts with abnormality continue braking operation.
Even in case braking is shut off due to malfunction of oil pressure source, braking is secured as master cylinder pressure
made by manpower works on wheel cylinder.
In case only regenerative brake is not effective due to abnormality in communication with hybrid vehicle control ECU, control
will be changed to have oil pressure brake generate all the braking force
292
PRIUS (EM03Q0U)
: Parts Location
Code See Page Code See Page Code See Page
A2 46 E7 D 49 M13 50
A3 46 G1 49 P2 51
A4 46 H14 A 49 P6 51
A6 46 H16 C 49 P8 B 51
A8 48 J1 47 P9 D 51
A13 48 J4 47 S2 A 47
A25 52 J5 50 S3 B 47
A26 52 J6 50 S6 51
B1 46 J7 A 50 S7 A 51
B5 A 48 J8 B 50 S8 B 51
B8 48 J9 50 S9 C 51
B17 46 J15 50 S10 D 51
B18 52 J16 50 S11 51
B19 48 J17 50 S13 51
C10 49 J18 50 S16 51
D1 49 J20 50 T4 51
D7 52 J23 50 T5 51
E4 A 49 J24 50 T11 51
E6 C 49 J25 50 Y1 51
: Relay Blocks
Code See Page Junction Block and Wire Harness (Connector Location)
1A 30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1D 30 Floor Wire and Driver Side J/B (Lower Finish Panel)
1F
30
1G
Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1L
31
1M
3C 23 Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
4C
4D
4F
4H 38 Instrument Panel Wire and Center Connector No.1 (Behind the Combination Meter)
4I
4K
4L
5C
5D
5E
5G
5H
42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5I
5J
5K
5L
5M
293
PRIUS (EM03Q0U)
ABS, TRAC and VSC
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
EB1 56 Engine Wire and Engine Room Main Wire (Inside of the Engine Room R/B)
IA1
IA2 58 Engine Room Main Wire and Instrument Panel Wire (Upper Parts of Front Body Pillar LH)
IA3
IF1 58 Floor Wire and Engine Room Main Wire (Left Kick Panel)
IG1
59 Instrument Panel Wire and Instrument Panel No.2 Wire (Behind the Combination Meter)
IG2
II1 59 Engine Wire and Instrument Panel Wire (Behind the Glove Box)
IK1 59 Engine Room Main Wire and Floor No.2 Wire (Cowl Side Panel RH)
IM1 59 Instrument Panel Wire and Floor No.2 Wire (Right Kick Panel)
IN1 59 Floor No.2 Wire and Engine Room Main Wire (Right Kick Panel)
IP1 59 Engine Room No.2 Wire and Engine Room Main Wire (Upper Parts of Front Body Pillar LH)
BD1 60 Skid Control Sensor No.1 Wire and Floor Wire (Front Side of Left Quarter Panel)
BL1 61 Skid Control Sensor No.2 Wire and Floor No.2 Wire (Front Side of Right Quarter Panel)
: Ground Points
294
PRIUS (EM03Q0U)
Memo
295
PRIUS (EM03Q0U)
Tire Pressure Warning System
(IG)
B
7. 5A W
ECU–IG
T10
Tire Pressure Warning Antenna and Receiver
7 1L
O
15 5H
9 5E
5 4 1
J20(A), J21(B)
E A
W
G
R
B
B
Connector
Junction
G
R
B
B
1 12 6 10 4 9
IG MPX2 MPX1 RF5V GND2 RDA
CLSW GND
2 7 T11
Tire Pressure Warning ECU
W–B
GR
1
Warning Reset SW
Tire Pressure
T12
A
Connector
Junction
W–B A
J25
A
W–B
IH
296
PRIUS (EM03Q0U)
B B
16 4L 8 5K
(∗1)
GR
GR
B
32 11
MPX2 MPX2+
(∗2)
W
MPX1 MPX+ P
S11
A8
31 3
9 1G
(∗1)
GR
17 B
MPX1
Body ECU
B 5(A)
7 4L MPX2 13 5J 13 5D
15 A
B
7 4I 4 5C 13 5G
11 4F
GR
8 II1 11 4D
GR
GR
19 17 12 7
Gateway ECU
Transmission
ID Code Box
P6
T4
T5
18 16 3 24
GR
GR
B
9 II1 2 4D 8 5C
B
14 4I 8 5G
297
PRIUS (EM03Q0U)
Tire Pressure Warning System
(IG) (BAT)
B
10A 15A
GAUGE DOME
1 1M 3
R
B
B
Connector
Junction
V
13 4K
J6
B
R
2 4C
13 1A
16 5L
P
8 1L
7 5D
P
16 5H
W
P
11 5D
L
25 24 22 21
BEAN
IC
Tire Pressure
Master
Power Supply
Circuit
14 C10 9
Combination Meter
BR
Y
G
W
G
R
B
L
BR
II
ABS Speed Sensors
298
PRIUS (EM03Q0U)
System Outline
∗ In the tire pressure warning system, the warning light illuminates to alert the driver about the low tire pressure when the
vehicle continues driving with one of the four tires under such low pressure to cause possible driving disturbance.
∗ The air pressure sensors installed in the wheels measure air pressure in the tires directly.
: Parts Location
Code See Page Code See Page Code See Page
A8 48 J25 50 T4 51
B5 A 48 P6 51 T5 51
C10 49 S7 A 51 T10 55
G1 49 S8 B 51 T11 51
J6 50 S9 C 51 T12 51
J20 A 50 S10 D 51
J21 B 50 S11 51
: Relay Blocks
Code See Page Junction Block and Wire Harness (Connector Location)
1A 30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1G 30
1L Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
31
1M
4C
4D
4F
4H 38 Instrument Panel Wire and Center Connector No.1 (Behind the Combination Meter)
4I
4K
4L
5C
5D
5E
5G
42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5H
5J
5K
5L
: Ground Points
299
PRIUS (EM03Q0U)
Memo
300
PRIUS (EM03Q0U)
SRS
NOTICE: When inspecting or repairing the SRS, perform service in accordance with the following precautionary instructions
and the procedure, and precautions in the Repair Manual applicable for the model year.
D Malfunction symptoms of the SRS are difficult to confirm, so the DTCs become the most important source of information
when troubleshooting. When troubleshooting the SRS, always inspect the DTCs before disconnecting the battery.
D Work must be started more than 90 seconds after the power SW is pushed to the ”OFF” position and the
negative (–) terminal cable is disconnected from the battery.
(The SRS is equipped with a back–up power source so that if work is started within 90 seconds from
disconnecting the negative (–) terminal cable of the battery, the SRS may deploy.)
D When the negative (–) terminal cable is disconnected from the battery, the memory of the clock and audio system will be
cleared. So before starting work, make a record of the contents in the audio memory system. When work is finished,
reset the audio systems as they were before and adjust the clock. Some vehicles have power tilt steering, power
telescopic steering, power seat and power outside rear view mirror which are all equipped with memory function.
However, it is not possible to make a record of these memory contents. So when the work is finished, it will be
necessary to explain it to your customer, and ask the customer to adjust the features and reset the memory. To avoid
erasing the memory in each system, never use a back–up power supply from outside the vehicle.
D Before repair, remove the airbag sensor if shocks are likely to be applied to the sensor during repair.
D Even in cases of a minor collision where the SRS does not deploy, the following parts should be inspected;
D Never use SRS parts from another vehicle. When replacing parts, replace with new parts.
D For the purpose of reuse, never disassemble and repair the following parts.
D If the following parts have been dropped, or have cracks, dents and other defects in their case, bracket, and connector,
replace with new one.
D Use a volt/ohmmeter with high impedance (10 kΩ/V minimum) for troubleshooting electrical circuits of the system.
D Information labels are attached to the periphery of the SRS components. Follow the instructions of the notice.
D After work on the SRS is completed, check the SRS warning light.
D If the vehicle is equipped with a mobile communication system, refer to the precaution in the IN section of the Repair
Manual.
301
PRIUS (EM03Q0U)
SRS
Y–B
Y
W
B
B
1 BC1 2 BC1 1 BG1 2 BG1
Y–B
Y–B
Y
1 A 2 A 8 C 7 C 21 A 19 A 20 C 22 C
SFD+ SFD– SFP+ SFP– ESD VUPD ESP VUPP
Y–R
Y–B
Y
Y–G
Y–G
Y–R
Y
1 A 2 A 1 B 2 B 1 2 3 4
P+ P– P2+ P2– D+ D– D2– D2+
Spiral
Cable
A20(A), A21(B)
Airbag Squib
(Front Passenger Airbag Assembly)
A22
Airbag Squib (Steering Wheel Pad)
302
PRIUS (EM03Q0U)
F11
Front Passenger Seat
Belt Warning Light
Passenger Airbag
ON/OFF Indicator
P–AB PAON
C15 C16 C17 C18 5 1
Curtain Shield Curtain Shield Curtain Shield Curtain Shield
Airbag Sensor LH Airbag Sensor RH Airbag Squib LH Airbag Squib RH
B
L
10 IG2 21 IG2
B
ESCL VUCL ESCR VUCR IGL+ IGL– IGR+ IGR–
1 2 1 2 1 2 1 2
J20(A), J21(B)
A A B A
Connector
Junction
C B B B
Y–B
Y–B
W
W
B
B
22 A 20 A 19 C 21 C 4 A 3 A 5 C 6 C 17 B 23 B
ESCD VUCD ESCP VUCP ICD+ ICD– ICP+ ICP– P–AB PAON
W–B
W
W
B
14 1E 30 1E
Y–B
Y–B
Y
W
B
17 1E
1 2 1 2 1 2 1 2
L+ L– R+ R– –SL +SL –SR +SR
P22 P23 F1 F2
Pretensioner LH Pretensioner RH Front Airbag Sensor LH Front Airbag Sensor RH
W–B
IH
303
PRIUS (EM03Q0U)
SRS
(IG)
7. 5A
IGN
16 1E
S17
Seat Position Airbag Sensor
Seat Position
Airbag Sensor
VS GND
Buckle SW
O6
Occupant Classification
Sensor Front LH
3 1 2 4
SB
G
R
18 A 10 A 9 A 17 A 21 B 24 C 16 C
Occupant Classification ECU
GSW2 TC SIL LA
22 B 15 B 16 B 14 B
DIA BSW BGND
2 A 9 A 5 A
W
G
R
B
15 1E 13 1E 31 1E 32 1E
12 IM1
2 1
3 1E 8 1E 3 1L 10 1G 14 1L
W
LG
W
P
Y
L
14 5L 5 5K 11 5H 13 5M 9 5L
B16
Buckle SW Front RH
2 5F 7 5M 8 5M 9 5M
W
P
Y
L
20 13 7 11
Hybrid Vehicle
TC SIL A/B
Control ECU
ABFS
W
H14
D1
304
PRIUS (EM03Q0U)
(IG) (BAT) (BAT) (IG)
7 1L 5 1K 3 1 1M
V
P
15 5H
B
Connector
Junction
16 5L 16 5H
J6
9 5E B
7 5D 11 5D
R
B
13 1A
J20(A), J21(B)
L
E A
D
Connector
Connector
Junction
Junction
13 IG2 9 IG2
J19
O7
Occupant Classification D B D 8 1L
Sensor Front RH
P
Y
B
11 IM2 10 IM2
W
O
L
SRS
L
Power
Supply
12 B 8 B 2 B 7 A 1 A Circuit
SVC2 SIG2 SGD2 IG +B
O 4(A), O 5(B)
14 11
BR
B
GR
BR
W
R
Y
4 IG1 17 IG1
W–B
1 2 3 1 2 3
SVC3 SIG3 SGD3 SVC4 SIG4 SGD4
4 4C 16 4C
O8 O9
Occupant Classification Occupant Classification 15 4H 4 4A
Sensor Rear LH Sensor Rear RH
BR
BP II
305
PRIUS (EM03Q0U)
SRS
System Outline
∗ The system reaches an ignition judgment to deploy the following device based on the signals received from the front
airbag sensor and deceleration sensor.
– Driver Airbag
– Front Passenger Airbag
– Seat Belt Pretensioner
∗ The system reaches an ignition judgment to deploy the following device based on the signals received from the side
airbag sensors.
– Side Airbags
– Curtain Shield Airbags
∗ The dual–stage SRS airbag system has been used for the driver and front passenger airbags. This system controls the
optimal airbag inflation by judging the extent of impact, seat position (driver seat) and whether or not the seat belt is
fastened (driver seat) and information from the front passenger occupant classification system.
∗ The front passenger occupant classification system judges whether the front passenger seat is occupied by an adult or
child (with child seat) or is unoccupied, according to the load applied to the front passenger seat and whether the seat belt
is buckled. Based on the results, it restricts the deployment of the front passenger airbag, front passenger side airbag, and
front passenger seat belt pretensioner. In addition, the system informs the driver of the result of the judgment through the
use of the AIRBAG ON/OFF indicator lights.
∗ The airbag sensor assembly transmits a signal to the hybrid vehicle control ECU in order to stop the fuel pump.
∗ The airbag sensor assembly transmits a signal to the hybrid vehicle control ECU in order to control hybrid high voltage cut
off.
: Parts Location
Code See Page Code See Page Code See Page
A17 A 48 D1 49 O7 54
A18 B 48 F1 46 O8 54
A19 C 48 F2 46 O9 54
A20 A 48 F11 49 P22 54
A21 B 48 H14 49 P23 54
A22 48 J6 50 S17 55
B16 52 J19 50 S18 55
C10 49 J20 A 50 S19 55
C15 52 J21 B 50 S20 55
C16 52 O4 A 54 S21 55
C17 52 O5 B 54
C18 52 O6 54
: Relay Blocks
306
PRIUS (EM03Q0U)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A 30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1E
1F 30
1G
Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1K
1L 31
1M
4A
4C 38 Instrument Panel Wire and Center Connector No.1 (Behind the Combination Meter)
4H
5D
5E
5F
5H 42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5K
5L
5M
: Ground Points
307
PRIUS (EM03Q0U)
Horn
(BAT)
10A
HORN
HORN
Relay
7 3J 8 3J
B
Y
28 1A
25 1E
Y
C
Connector
Junction
16 5I C
J2
16 5B
O
B
Horn (High)
Horn (Low)
8 1 1
HO
H10
H9
L
2
Combination SW
Horn
C12
308
PRIUS (EM03Q0U)
: Parts Location
Code See Page Code See Page Code See Page
C12 49 H10 46
H9 46 J2 47
Code See Page Junction Block and Wire Harness (Connector Location)
1A 30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1E 30 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
3J 24 Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
5B
42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5I
309
PRIUS (EM03Q0U)
Clock
100A 7. 5A 15A
DC/DC ACC DOME
2 2
1 3D 3
R
1 1B
B
J6
Junction
Connector
T–LP B
Relay
R
7. 5A
PANEL
13 1A
9 1M 4 1L 8 1L
G
4 5K 12 5H 16 5H
6 5G 3 5G 2 5G
GR
R
P
3 4 1
ILL+ ACC B
E
2 C9
Clock
W–B
4 5G
6 5L
W–B
A
J24
Junction
Connector
A
W–B
IH
310
PRIUS (EM03Q0U)
: Parts Location
Code See Page Code See Page Code See Page
C9 49 J6 50 J24 50
: Relay Blocks
Code See Page Junction Block and Wire Harness (Connector Location)
1A
30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1B
1L
31 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1M
3D 23 Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
5G
5H
42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5K
5L
: Ground Points
311
PRIUS (EM03Q0U)
Power Outlet
∗ 1 : Separate Amplifier
∗ 2 : Built–in Amplifier
(BAT) (ACC)
15A 15A
PWR OUTLET PWR OUTLET
FR
2 1K 3 1N
GR
D
Connector
Junction
LG D
J36
D
GR
5 2
Power Outlet
GR
Relay
P5
3 1
1 IO1 (∗1)
1 IO2 (∗2)
W
GR
2 2
Power Outlet
Power Outlet
W–B
No. 1
No. 2
P3
P4
1 1
W–B
W–B
3 IO1 (∗1)
2 IO2 (∗2)
W–B
A A
A
A J24
Junction
Connector
W–B
IH
312
PRIUS (EM03Q0U)
: Parts Location
Code See Page Code See Page Code See Page
J24 50 P3 51 P5 51
J36 50 P4 51
Code See Page Junction Block and Wire Harness (Connector Location)
1K
31 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1N
: Ground Points
313
PRIUS (EM03Q0U)
Remote Control Mirror
(ACC)
7. 5A
ACC
4 1L
G
12 5H R21
8 Remote Control Mirror SW
B
Operation SW
9 5N
/Down
Left
/Up
Down
Right
Left
Up
Right
P
6 IE1
Select SW
LH RH LH RH
HL HR VL VR M+ E
P
5 2 4 3 6 7
W–B
G
B
5 5N
A
2 J27
5I Junction
Connector
A
4 5N
W–B
G
G
Y
G
R
B
W–B
3 5 4 3 5 4
A
MH MV M+ MH MV M+ J24
Junction
Connector
M M M M
A
W–B
R19 R20
Remote Control Mirror LH Remote Control Mirror RH
IH
314
PRIUS (EM03Q0U)
: Parts Location
Code See Page Code See Page Code See Page
J24 50 R19 54 R21 54
J27 53 R20 54
Code See Page Junction Block and Wire Harness (Connector Location)
1L 31 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
5H
5I 42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5N
: Ground Points
315
PRIUS (EM03Q0U)
Rear Window Defogger and Mirror Heater
(BAT) (IG)
A/C (HTR)
15A
DOME
10A
2 1
V
1M
3
R
V
B 14 4K 16 4L
Connector
Junction
W
J6
(∗1)
B
B
Warning ECU
Tire Pressure
16 5H 16 5L MPX1
11 4D 11 4F
Certification ECU
32 10 1K
R
P
MPX2
T11
MPX2
11 5D 7 5D
(∗2)
12
B
13 1A
B
MPX1
S11
13 4K 17 15 A
31
L
ID Code Box
MPX1 MPX2
Body ECU
8 1L
9 IG2
B 5(A)
2 4C MPX2 MPX1
T5
B
16 17
W
Y
13 IG2 2 IG1
(∗1)
GR
GR
Y
9 1G
V
21 22 24 7 4L 2 4D
GR
8 5K 10 5L
7 4I 14 4I
8 5J 9 5J
GR
B
Rear DEF
GR
B
8 II1 9 II1
A/C Control Assembly
Power
Supply 11 B 5 B
BEAN IC
A 7(A), A 8(B)
Circuit MPX2+ IG
GR
19 18 MPX+
MPX1 MPX2 3 B
M13
C10 Multi–Display
14 25
Combination Meter
T4
Transmission Control ECU TX1+ TX1–
GR
BR
4 5
4 IG1 3 IG2
W
B
13 5J 6 5E 7 5E
G
4 4C
13 5D 13 5G 8 5G 8 5C 4 5C 6 5C 7 5C
GR
GR
GR
W
B
15 4H
7 24 3 12 6 21
MPX1 MPX2 MPD1 MPD2 GTX+ GTX–
BR
II P6 G1
Power Source Control ECU Gateway ECU
316
PRIUS (EM03Q0U)
D
D
Y Y Y
6 B
3 5J
13 5K
5 1K
+B
J19 (BAT)
Junction 15A ECU–B
Connector
10 1N
(IG)
3
5
V
15A M/HTR
W–B
1 B
IJ
1
2
Y W–B Y
GND
12 B
1 5J
3 5K
2 1M
(IG)
RrDEF
M12
Mirror Heater Relay 10A GAUGE
10
R BR Y
2 A
15 5J
14 5B
2 5K
12 1N
SW1
AC1
A 7(A), A 8(B)
2
2 1J
1 ID1
Rear DEF
3
W G
(BAT)
15 A
16 5J
4 5B
A/C Control Assembly
SGST
DEF Relay
B
40A DEF
EAC
C12
Combination SW
V
A
A
A
A
1
2
W–B W–B W–B W–B W W
IH
1 5K
3 5N
5 IE2
1 IE1
10
A
A
A
A
1
2
W–B W–B W–B W–B V V
PRIUS (EM03Q0U)
2 5N
IL2
IL1
W–B W–B
BL
2 BK1
2 BH2
W–B
∗ 1 : w/ Smart Key System
∗ 2 : w/o Smart Key System
1
2
W–B B B B B B
1 B
1 A
BO
1 BK1
1 BH2
R13(A), R14(B) N7
Rear Window Defogger Noise Filter
(Rear Window Defogger)
W–B B
1 B
1 A
R15(A), R16(B)
Rear Window Defogger
317
Rear Window Defogger and Mirror Heater
System Outline
When power SW is at IG ON position, turning ON rear DEF SW on the steering wheel sends signal to A/C control assembly.
Then A/C control assembly flows electricity in TERMINAL Rr DEF, which activates DEF relay and mirror heater relay. As a
result, rear DEF SW and mirror heater is turned on.
Turning ON rear DEF SW of multi–display sends signal to A/C control assembly. Then the same action follows as above.
During rear window defogger and mirror heater in operation, signal is input in combination meter, lighting rear DEF indicator
in combination meter.
: Parts Location
Code See Page Code See Page Code See Page
A7 A 48 J25 50 R15 A 54
A8 B 48 J26 53 R16 B 54
B5 A 48 J27 53 R19 54
C10 49 M12 50 R20 54
C12 49 M13 50 S11 51
G1 49 N7 54 T4 51
J6 50 P6 51 T5 51
J19 50 R13 A 54 T11 51
J24 50 R14 B 54
: Relay Blocks
Code See Page Junction Block and Wire Harness (Connector Location)
1A 30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1G
30
1J
1K
Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1L
31
1M
1N
4C
4D
4F
4H 38 Instrument Panel Wire and Center Connector No.1 (Behind the Combination Meter)
4I
4K
4L
5B
5C
5D
5E
5G
42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5H
5J
5K
5L
5N
318
PRIUS (EM03Q0U)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
ID1 58 Instrument Panel Wire and Floor Wire (Left Kick Panel)
IE1
58 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IE2
IG1
59 Instrument Panel Wire and Instrument Panel No.2 Wire (Behind the Combination Meter)
IG2
II1 59 Engine Wire and Instrument Panel Wire (Behind the Glove Box)
IL1
59 Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
IL2
BH2 61 Back Door No.1 Wire and Floor Wire (Rear Side of Roof Panel)
BK1 61 Back Door No.1 Wire and Back Door No.2 Wire (Rear Side of Roof Panel)
: Ground Points
319
PRIUS (EM03Q0U)
Automatic Glare–Resistant EC Mirror
(BAT) (IG)
15A 7. 5A
DOME ECU–IG
3 7 1L
R
B
J6
Junction
O
Connector
B
R
13 1A 15 5H
8 1L 8 5L
W
P
16 5H 7 5L
10 5I 7 5I
R
1 IB1 2 IB1
R
10 6
+B IG
E
8 G3
Inner Mirror
W–B
11 IB1
W–B
4 5I
6 5L
W–B
A
J24
Junction Connector
A
W–B
IH
320
PRIUS (EM03Q0U)
: Parts Location
Code See Page Code See Page Code See Page
G3 53 J6 50 J24 50
: Relay Blocks
Code See Page Junction Block and Wire Harness (Connector Location)
1A 30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1L 31 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
5H
5I 42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5L
: Ground Points
321
PRIUS (EM03Q0U)
Garage Door Opener
(BAT) (IG)
15A 7. 5A
DOME ECU–IG
3 7 1L
R
B
J6
Junction
O
Connector
B
R
13 1A 15 5H
8 1L 8 5L
W
P
16 5H 7 5L
10 5I 7 5I
R
1 IB1 2 IB1
R
10 6
+B IG
E
8 G3
Garage Door Opener
W–B
11 IB1
W–B
4 5I
6 5L
W–B
A
J24
Junction
Connector
A
W–B
IH
322
PRIUS (EM03Q0U)
: Parts Location
Code See Page Code See Page Code See Page
G3 53 J6 50 J24 50
: Relay Blocks
Code See Page Junction Block and Wire Harness (Connector Location)
1A 30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1L 31 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
5H
5I 42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5L
: Ground Points
323
PRIUS (EM03Q0U)
Multi–Display and Audio System for Separate Amplifier
R
15A DOME
R
V
10A
GAUGE J6
Junction V(∗1)
B Connector
V
2
B B
1 1M 19 1A 3
(∗1)
R
B
R
(∗1)
V
13 1A 2 5E 12 5E
E
Connector
Junction
16 IG1
J10
8 1L 14 5N 7 5K
(∗1)
(∗1)
E
G
V
(∗1)
V
(∗1)
W
R
P
16 5L 15 4C
6 3H
16 5H 8 1G
7 5D 15 4I 22 IJ3
(∗1)
11 5D 8 1F
Y
(∗1)
BK/UP LP
R
Relay
Connector
13 IG2 L
Junction
14 IA3
J10
9 IG2
A
(∗1)
P
7 3H 8 3H
(∗1)
(∗1)
(∗1)
R
V
V
C10
Combination
Meter 22 23 21
(VFD)
Power
Supply
Circuit
12 5K 11 5E 9 5K
BEAN IC
12 5D
15 31 12 20 14 25 24 9 13
GR
BR
BR
W
R
B
V
L
R
L
W
G
2 5D 1 5D 5 5D 6 5D
4 4C 2 4C
12 5I 13 5I 15 5K 14 5K
BR
R
B
15 4H 13 4K
6 IM1 5 IM1 1 IM1 8 IM1
Y
BR
BR
R
B
B
5 6 4 8
GR
BR–R
L–R
L–Y
Y
2 3 1 2
II
F14
Fuel Sender
324
PRIUS (EM03Q0U)
R R
B(∗1) B(∗1)
V V
V(∗1) V(∗1)
V V
G1
Gateway ECU
BR
CA1H CA1L
17 18
B11
Battery ECU 3 EB1
A6
2
W
B
H14
BR
W
31 C 30 C A
7 1 8 9
(∗2)
Junction Connector
W
W
B
B
13 ID4 5 ID4 4 ID4 A
(∗2)
A
(∗2)
J17
(∗2)
A
W
B
(∗2)
W
B
(∗2)
A B A B
B A B A B A
A B J15 B A J18
Junction Connector Junction Connector
W–B
(∗2)
∗ 1 : w/ Navigation System
W
B
∗ 2 : Shielded
Junction Connector
Connector SP1
A A
V
28 D 22 D 32 A 22 A 35 B 27 B 31 C 23 C
16 4I
W
W
G
R
B
L
A
J24
W–B
Junction
Connector
A 9 4C
Y
ABS Speed Sensors
B B
GR GR
W–B
W–B
IH
325
PRIUS (EM03Q0U)
Multi–Display and Audio System for Separate Amplifier
R R
B(∗1) B(∗1)
V V
V(∗1) V(∗1)
G1
Gateway ECU
W
B
GR
GR
8 II1
7 4I 4 5C 8 5C 6 5C 7 5C
GR
7 4L 19 13 5J 8 5G 6 5E 7 5E
MPX1
MPX2
T4
18
Certification ECU
31 3 24
MPX1 MPX+ MPX2
B
(∗4)
W
9 II1
A8
P6
32 11 7
M13(A), M14(C), M15(D), M16(E)
W
B
V
(∗3)
B
4 A 5 A 20 A
GR
GR
16 4L 14 4I
8 5J 13 5G
TC DR
14 4K 2 4D 7 A 17 A
8 5K 13 5D
GR
W
B
GR
13 5E 1 5E
Tire Pressure Warning ECU
9 1G
3 IG2
7 5M 15 5L
6 16 17
B 5(A), B 7(C)
ID Code Box
GR
T5
12 17 15 A 16 C
P
B
13
B
TC
11 4D 1 4F
B
D1
GR Data Link
11 4F 13 4H Connector 3
B W
326
PRIUS (EM03Q0U)
13 3
R R R
1A 1M
B(∗1)
V V
V(∗1)
∗ 1 : w/ Navigation System
(BAT) (IG) (ACC) ∗ 2 : Shielded
(∗1)
V
7. 5A ECU–IG ∗ 3 : w/ Smart Key System
15A ECU–B
7. 5A ACC
4 : w/o Smart Key System
GR
GR
15 5H 14 5H
REV ACC MIC+ MIC– GVIF
D
Connector
20 A 13 A 3 B 5 B 1 C
Junction
J19
9 5E 13 5L
(∗1)
(∗1)
D
R
B
Y
A C
Connector
Junction
10 5K A GR C
Connector
E A
J36
(∗2)
(∗1)
(∗1)
Junction
G
R
B
A GR
J20(A)
C
Connector
Junction
10 5E E A A GR
J19
(∗1)
A
GR
R
Y
3 A 10 A 2 A 21 A 21 C 22 C 23 C 1 E
+B1 IG ACC REV SGND MCO+ MCO– GVIF
R
B
BR
(∗1)
(∗2)
(∗1)
(∗1)
BR
R
B
D A D A D A
J20(A), J21(B)
(∗1)
(∗2)
(∗1)
(∗1)
BR
Connector
7 8 9
(∗2)
E B E B
R
B
O3
Overhead J/B BR
(∗2)
R
B
BR
W–B
(∗1)
4 3 2 1
Television
Camera
II
T13
327
PRIUS (EM03Q0U)
Multi–Display and Audio System for Separate Amplifier
R SB
GR
SB
R
V
Connector
∗ 1 : w/ Navigation System
Junction
B
∗ 2 : Shielded
J19
B
GR
GR
(∗1)
GR
SB
V
11 B 12 B
SLD1 VO1– VO1+ TX– TX+ GND1 +B SPD ACC
7 B 8 A 9 A 18 A 19 A 15 A 1 A
S14(A), S15(B), S29(C)
Stereo Component Amplifier
INT– INT+
22 B 23 B
W–B
(∗2)
(∗1)
(∗1)
(∗1)
(∗1)
(∗1)
W
G
R
B
BR
M13(A), M14(C), M15(D), M16(E)
6 C 5 C 8 C 1 C 6 D 3 D
IVI– IVI+ TSW– SGND TX4– TX4+
Multi–Display
W
G
BR BR
W–B
(∗1)
328
PRIUS (EM03Q0U)
SB SB
GR GR
(BAT)
C8
Center Speaker
30A W 2 1
AMP
J36
Junction
B Connector
2
B
3 10 IA1
B
W
R
W
SB
SB
S14(A), S15(B), S29(C)
Stereo Component Amplifier 1 A 5 A 4 C 10 C
+B +B2 CTR+ CTR–
WFL+ WFL– WFR+ WFR– RL+ RL– RR+ RR– GND GND2
2 C 1 C 9 C 3 C 3 A 9 A 10 A 4 A 6 C 7 C
W
R
B
W–B
W–B
W
R
B
Y
LG
P
W
R
B
4 2 4 2
Tweeter Rear RH
Tweeter Rear LH
Junction Connector
T8
T9
1 3 1 3
A
LG
P
BR A
W
R
B
J36
A
1 2 1 2 2 1 2 1
W–B
P P
W W
BR BR
BR
II
329
PRIUS (EM03Q0U)
Multi–Display and Audio System for Separate Amplifier
SB
GR
T7 T6
Tweeter Front RH Tweeter Front LH
4 2 4 2
∗ 2 : Shielded
LG
V
L
V
L
W
O
R
P
GR
SB
15 A 5 A 7 A 10 A 19 A 9 A 18 A 8 A 11 A 1 A
TX– TX+ MUTE SLD L– L+ R– R+ ACC B
R 5(B), R 6(A)
Radio and Player
TX+ TX– GND SW1 GND SW2 ANT ALI ARI ASGN AUXI
9 B 10 B 20 A 7 B 6 B 8 B 13 A 17 B 15 B 10 B 19 B
BR
W
O
R
P
(∗2)
W
G
R
3 5E 5 5E 4 5E
1
A23
Antenna 2 IO1 4 IO1 6 IO1 5 IO1
1 5B 3 5B 2 5B Amplifier
G
P
(∗2)
W
G
R
6 4 5
AU1 EAU AU2
1 2 3 4
ALO ARO ASGN AUXO
P
W Seek+ MODE
S30
Stereo Jack Adapter
Seek–
BR
C12
Volume+ Combination SW
Volume–
330
PRIUS (EM03Q0U)
: Parts Location
Code See Page Code See Page Code See Page
A6 46 J16 50 R11 54
A8 48 J17 50 R12 54
A23 48 J18 50 S7 A 51
B5 A 48 J19 50 S8 B 51
B7 C 48 J20 A 50 S9 C 51
B11 52 J21 B 50 S10 D 51
C8 49 J24 50 S11 51
C10 49 J25 50 S14 A 51
C12 49 J36 50 S15 B 51
D1 49 M13 A 50 S29 C 51
E4 A 49 M14 C 50 S30 51
E6 C 49 M15 D 50 T4 51
E7 D 49 M16 E 50 T5 51
F12 53 N3 A 50 T6 55
F13 53 N4 B 50 T7 55
F14 53 N8 C 50 T8 55
G1 49 O3 54 T9 55
H14 49 P6 51 T11 51
J6 50 P8 51 T13 55
J10 50 R5 B 51
J15 50 R6 A 51
: Relay Blocks
331
PRIUS (EM03Q0U)
Multi–Display and Audio System for Separate Amplifier
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A 30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1F
30
1G
1K Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1L 31
1M
3H 24 Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
4C
4D
4F
4H 38 Instrument Panel Wire and Center Connector No.1 (Behind the Combination Meter)
4I
4K
4L
5B
5C
5D
5E
5G
5H
42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5I
5J
5K
5L
5M
5N
332
PRIUS (EM03Q0U)
: Ground Points
333
PRIUS (EM03Q0U)
Multi–Display and Audio System for Built–in Amplifier
R
(IG) (BAT) V
R
10A 15A
GAUGE DOME
P
B
Connector
Junction
V
2
J6
3 B B
1 1M 19 1A
R
R
B11
V Battery ECU
13 1A
V
V
P
CANL CANH
8 1L 19 18
P
16 5L 16 5H
(Shielded)
B
7 5D 11 5D 12 5E
Y
(Shielded)
C10
B
22 Combination Meter 21 23
(Shielded)
A B
(VFD)
Connector
Power
Junction
Supply
Circuit
J15 A B
8 1G
(Shielded)
BEAN IC
W
8 1F B
B
15 31 12 20 14 25 24 9 13
BR
R
B
GR
W
BR
R
L
Junction
2 5D 1 5D 5 5D 6 5D Connector
W
G
A
W–B
4 4C 2 4C 12 5D
12 5I 13 5I 15 5K 14 5K
A
BR
J24
R
B
Junction
6 IM1 5 IM1 1 IM1 8 IM1 15 4H 13 4K W Connector
A
Y Y
BR
R
B
5 6 4 8 B B
BR
BR–R
L–R
L–Y
GR GR
Y
2 3 1 2 W–B
W–B
II IH
F14
Fuel Sender
334
PRIUS (EM03Q0U)
R R
V V
V V
P P
V V
1 G1
H14 Gateway ECU
BR
Power Steering ECU Control ECU CA1H CA1L
17 18
3 EB1
W
B
2
CANL CANH CANH CANL
A6
BR
W 8 II1
GR
GR
TAM E2
Engine Control
19
W
B
Module
MPX1
CANH CANL
31 C 30 C A
MPX2
T4
(Shielded)
J17
Junction 18
Connector
(Shielded)
W
B
B
A 7 4I
9 II1
(Shielded)
A
W
(Shielded)
A 7 4L
B
W
B
(∗1)
GR
A B 14 4I
B A B A B A
Certification ECU
31
MPX1
2 4D
W–B
(∗2)
W
J15 B A J18
MPX2
S11
Junction Junction Connector
Connector
32
GR
W
B
(∗1)
16
∗ 2 : w/o Smart Key System
ID Code Box
MPX2
B 16 4L
MPX1 T5
W
17
V 14 4K
Tire Pressure Warning ECU
28 D 22 D 32 A 22 A 35 B 27 B 31 C 23 C
16 4I
W
W
G
R
B
L
MPX2
T11
11 4F
W–B
12
9 4C
Y
B
GR GR
W–B
335
PRIUS (EM03Q0U)
Multi–Display and Audio System for Built–in Amplifier
R R
V V
P E
Connector
Junction
V
J10
E
G1
V
Gateway ECU
MPD2 MPD1 GTX+ GTX– 16 IG1 6 3H
12 3 6 21
W
GR
GR
W
B
BK/UP LP
C
Connector
15 4C
Junction
Relay
4 5C 8 5C 6 5C 7 5C
J36
C
15 4I
13 5J 8 5G 6 5E 7 5E
7 3H 8 3H
P
A
Connector
Power Source Control ECU
Junction
B
J10
A/C Control Assembly
A
3 24 2 5E
R
MPX+ MPX2
14 IA3 22 IJ3
MPX2+ MPX1 14 5N
A8
P6
11 7
R
4 A 5 A 20 A 21 A (∗3)
4 B 5 B 25 B 21 B (∗4)
GR
GR
8 5J 13 5G
SNSE TC DR
31 C 7 A 17 A (∗3)
7 B 17 B (∗4)
8 5K 13 5D
P
B
P
13 5E 1 5E
GR
3 IG2
W–B
7 5M 15 5L
W
9 1G
GR
13 4H
17 A
Connector
Junction
B 5(A), B 7(C)
MPX1
Body ECU
J24
13 1 4F
A
MPX2 HSD1 TC
15 A 16 C
B
B
W–B
B
D1
GR Data Link
Connector 3
IH
336
PRIUS (EM03Q0U)
R R
V V
∗ 3 : w Television Camera
∗ 4 : w/o Television Camera
(BAT) (IG) (ACC)
15A 7. 5A 7. 5A
ECU–B ECU–IG ACC
5 1K 7 1L 6 1L
SB
O
Y
15 5H 14 5H
D
Connector
Junction
J19
D 9 5E 13 5L
SB
Y
10 5K B
E A
Connector
Connector
Junction
Junction
A GR
J20
J19
10 5E B
E A
(Shielded)
GR
W
Y
B
M13(A), (B), M14(C) 3 A 10 A 2 A (∗3)
Multi–Display 12 B 10 B 11 B (∗4) 25 C 26 C 24 C
+B1 IG ACC IVO+ IVO– SLD
W
R
BR
P
W
R
W
R
W
R
B
Television Camera
1 2 3 4
T13
337
PRIUS (EM03Q0U)
Multi–Display and Audio System for Built–in Amplifier
R
Volume–
Volume+
R
Seek–
Seek+ MODE
C12
Combination SW
13 1A
AU1 EAU AU2
6 4 5
3 1M
G
P
B
R
1 5B 3 5B 2 5B
B A23
Connector
Antenna
Junction
GR Amplifier
J19
3 5E 5 5E 4 5E
B
B 1
O
R
B
SB
V
TX1+ TX1– GND FL– FL+ FR+ FR– RL– RL+ RR+ RR–
9 C 10 C 7 A 6 A 2 A 1 A 5 A 6 B 2 B 1 B 3 B
BR
LG
W
R
V
B
L
P
LG
V
W
W
R
Y
2 4 4 2
Tweeter Front RH
Tweeter Front LH
T7
1 3 3 1
D
BR D
Connector
Junction
LG
W
R
V
B
L
J20
D
BR
2 1 1 2 2 1 1 2
338
PRIUS (EM03Q0U)
: Parts Location
Code See Page Code See Page Code See Page
A6 46 J6 50 R4 B 51
A8 48 J10 50 R5 C 51
A23 48 J15 50 R11 54
B5 A 48 J16 50 R12 54
B7 C 48 J17 50 S7 A 51
B11 52 J18 50 S8 B 51
C10 49 J19 50 S9 C 51
C12 49 J20 50 S10 D 51
D1 49 J24 50 S11 51
E4 A 49 J25 50 T4 51
E6 C 49 J36 50 T5 51
E7 D 49 A 50 T6 55
M13
F12 53 B 50 T7 55
F13 53 M14 C 50 T11 51
F14 53 P6 51 T13 55
G1 49 P8 51
H14 49 R3 A 51
: Relay Blocks
Code See Page Junction Block and Wire Harness (Connector Location)
1A 30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1F
30
1G
1K Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1L 31
1M
3H 24 Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
4C
4D
4F
4H 38 Instrument Panel Wire and Center Connector No.1 (Behind the Combination Meter)
4I
4K
4L
5B
5C
5D
5E
5G
5H
42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5I
5J
5K
5L
5M
5N
339
PRIUS (EM03Q0U)
Multi–Display and Audio System for Built–in Amplifier
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
EB1 56 Engine Wire and Engine Room Main Wire (Inside of the Engine Room R/B)
IA3 58 Engine Room Main Wire and Instrument Panel Wire (Upper Parts of Front Body Pillar LH)
ID4 58 Instrument Panel Wire and Floor Wire (Left Kick Panel)
IE2 58 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IG1
59 Instrument Panel Wire and Instrument Panel No.2 Wire (Behind the Combination Meter)
IG2
II1 59 Engine Wire and Instrument Panel Wire (Behind the Glove Box)
IJ3 59 Engine Room Main Wire and Instrument Panel Wire (Behind the Glove Box)
IL2 59 Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
IM1
59 Instrument Panel Wire and Floor No.2 Wire (Right Kick Panel)
IM2
IQ1 59 Floor
BB1 60 Rear Door No.2 Wire and Floor Wire (Left Center Pillar)
BH1 61 Back Door No.1 Wire and Floor Wire (Rear Side of Roof Panel)
BJ1 61 Rear Door No.1 Wire and Floor No.2 Wire (Right Center Pillar)
BK2 61 Back Door No.1 Wire and Back Door No.2 Wire (Rear Side of Roof Panel)
: Ground Points
340
PRIUS (EM03Q0U)
Memo
341
PRIUS (EM03Q0U)
Combination Meter
(IG) (BAT)
10A 15A
GAUGE DOME
P
2
1 1M 16 5L 16 5H 8 1L 3
R
7 5D 11 5D 13 1A B
J6
Junction
Connector
L
B
13 IG2 9 IG2
R
V
Y
C10
22 21 Combination Meter
A/C AUTO
Front DEF
Rear DEF
Head (∗1)
Power
CRUISE
Tail (∗2)
Inlet Air
Supply
Circuit
(VFD) Buzzer
13 9
W V
V
8 1G 8 1F 16 IG2 10 IG1
Y
W
9 4C
7 5K 9 5K 12 5D
16 4I
7
V V
IA3
9 5F 12 5E 7 5N 12 5K 11 5E 5 5G
Stereo Component
Hybrid Vehicle
Power Source
Radio and Player
Navigation ECU
Multi–Display
Control ECU
Control ECU
28 D 22 D 32 A 22 A 35 B 27 B 31 C 23 C
W
W
G
R
B
L
Control ECU
Amplifier
342
PRIUS (EM03Q0U)
∗ 1 : USA
∗ 2 : Canada
C10
Combination Meter
MAINT REQD
Brake Control
Tire Pressure
Smart Key
READY
Master
VSC
SRS
ABS
Slip
15 31 12 20 28 29 6 7 11 30 23
BR
R
B
B
L
SB
LG
R
R
L
Buckle SW Front
Front Passenger
Airbag Sensor Assembly
BK/UP LP Relay
Warning Light
Rheostat
2 5D 1 5D 5 5D 6 5D 16 4C
Seat Belt
LH
12 5I 13 5I 15 5K 14 5K 4 4A
BR
W
R
B
R
B
10 1G
5 6 4 8
9 9
Y Y
BR–R
5M 5L
L–R
L–Y
Y
11
2 3 1 2 A/B
Fuel Sender
D1
Fuel Sender Temp. Sensor Data Link
Connector 3
F14
343
PRIUS (EM03Q0U)
Driver' s
344
Seat Belt
Brake
10
Headlight Beam Level L
Control ECU
Door
5
3
R GR Y
H11
14 4A
8 4C
8 IG1
Beam
25
GR P
ODO
Combination Meter
3 IG2
ODO/TRIP SW
7
1
O V L
16 4A
6 4C
6 IG1
24
B W
IC
TC
13 4K
2 4C
2 IG1
BEAN
Security
6
2
8
SB Y B R
Body ECU
15 4A
5 4C
5 IG1
E
Turn LH
19
Flasher Relay
Turn RH
14
18
BR G BR G
II
15 4H
4 4C
4 IG1
Malfunction
Indicator Lamp
4
26
G O L
PRIUS (EM03Q0U)
Engine Control Module
7 4C
4 4G
7 IG1
C10
Combination Meter
15 1F
(IG)
7. 5A IGN
S11
Certification ECU
9
8
6
18
19
31
32
12
B GR GR GR B W B
7 4I
II1
II1
7 4L
16 4L
14 4K
MPX2
MPX1
MPX1
MPX2
MPX1
MPX2
(∗3) (∗3)
T4 T11
Transmission Control ECU W Tire Pressure
B
P
BR
1
Ambient Temp.
Sensor
3 EB1
A6
2
BR
W
H14
Hybrid Vehicle
Control ECU 21 D 28 A
MPX1
W
B
B
17
9 1G A
(Shielded)
GR
11 4F 8 5K 13 5D A
(Shielded)
11 4D 8 5J 13 5G
B A B A
Junction Connector
GR
GR
B
J18 B A
Power Source Control ECU
J17
Junction Connector
A
A/C Control Assembly
(Shielded)
17 11 7
A
Multi–Display
ID Code Box
P6
T5
W–B
16 3 24 4 5
GR
Junction Connector
B
2 4D 13 5J 8 5G 6 5E 7 5E A
J25
A
14 4I 4 5C 8 5C 6 5C 7 5C
W
B
GR
GR
W
B
W–B
12 3 6 21 17 18
MPD2 MPD1 GTX+ GTX– CA1H CA1L
G1
Gateway ECU IH
B
345
PRIUS (EM03Q0U)
Combination Meter
: Parts Location
Code See Page Code See Page Code See Page
A6 46 G1 49 S7 A 51
A8 48 H11 49 S8 B 51
B5 A 48 H14 49 S9 C 51
C10 49 J6 50 S10 D 51
D1 49 J17 50 S11 51
E4 A 49 J18 50 T4 51
E6 C 49 J25 50 T5 51
E7 D 49 M13 50 T11 51
F14 53 P6 51
: Relay Blocks
Code See Page Junction Block and Wire Harness (Connector Location)
1A 30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1F
30
1G
Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1L
31
1M
4A
4C
4D
4F
4G 38 Instrument Panel Wire and Center Connector No.1 (Behind the Combination Meter)
4H
4I
4K
4L
5C
5D
5E
5F
5G
5H
42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5I
5J
5K
5L
5M
5N
346
PRIUS (EM03Q0U)
: Ground Points
347
PRIUS (EM03Q0U)
Radiator Fan and Condenser Fan
30A 7. 5A 30A
RDI ECU–IG CDS FAN
2 2
2 3B 24 1A 3
W
B
B
R
B B B B
B J4
Junction Connector
B
1 3G 2 3G B 3 3 3 3
1 3 5 1
2 5 3 2
4 3G 3 3G 3 3 3 3 3
W–B
LG
LG
W
L
L
B
Connector
J10
Junction
B L B Junction Connector
J2
B J9
G
E Junction Connector E
B B
L
E E E
L
L
A/C Condenser Fan Motor
LG
Radiator Fan Motor
2 2
4 IA2
LG
LG
3 IA2
M M
W
1 1
R1
A1
2 3 5H Water Temp. SW
2
Pressure SW
2 5H
Single
5 5J
P1
W4
3 4 5J
1
LG
L
14 15
W–B
RF CF
W–B
A8
W–B
LG
W–B
W–B
EE EF EA
348
PRIUS (EM03Q0U)
J18
Junction Connector
B A A B
A J17
Junction
Connector
(Shielded)
A
W
B
(Shielded)
A
W
31 C 30 C 9 8
Engine Control Module
FAN
8 D
H14
W–B
LG
A
J25
Junction
Connector
A
LG
W–B
IH
349
PRIUS (EM03Q0U)
Radiator Fan and Condenser Fan
System Outline
The radiator fan motor and A/C condenser fan motor operate according to the water temp. SW (Inverter), A/C single
pressure SW, engine coolant temp. and the A/C system condition. The FAN NO.1 relay, FAN NO.2 relay, FAN NO.3 relay are
turned on/off, to operate the fan motors at low speed (In series), or high speed (In parallel).
1. Low Speed operation
When the water temp. SW (Inverter) is on and/or A/C control assembly is in operation, the radiator fan motor and A/C
condenser fan motor operate at low speed.
2. High Speed Operation
When the pressure SW (Single) is on, engine control module and/or A/C control assembly, the radiator fan motor operate
and A/C condenser fan motor operates at high speed.
: Parts Location
Code See Page Code See Page Code See Page
A1 46 J2 47 J18 50
A8 48 J4 47 J25 50
E6 C 49 J9 50 P1 47
E7 D 49 J10 50 R1 47
H14 49 J17 50 W4 47
: Relay Blocks
Code See Page Junction Block and Wire Harness (Connector Location)
1A 30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
3B 23
Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
3G 24
5H
42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5J
: Ground Points
350
PRIUS (EM03Q0U)
Memo
351
PRIUS (EM03Q0U)
Air Conditioning
B
2 2
1 3C
13 1A 3 29 1A 10 1K
L
1 1C
V
B
Connector
8 1L
Junction
P
J6 5 2
16 5H 1 1M
HTR Relay
B
4
R
11 5D V
3 1
16 5L
L
19 1A 17 1E 7 1J 5 1N
9 IG2
7 5D
W–B
V
B
C
11
Y
V Y C V
Connector
IG2
Junction
22 21 BR
J10
C
V
A/C AUTO
Front DEF
Inlet Air
Power
Supply
Circuit
BR
A
Connector
Junction
Blower Motor
J12
BEAN IC (VFD)
M A
B2
BR
1
14 9 25 24 C10
Combination Meter
GR
BR
B–Y
B
4 IG1 10 IG1
1 A 2 B 1 B
G
B 3(A), B 4(B)
+B M+ M–
4 4C 9 4C
GND S1
3 A 2 A
15 4H 16 4I
W–B
W–B
V
B
7 IA3
GR
V
W
G
R
B
L
BR
BR
II IH IJ EC
ABS Speed Sensors
352
PRIUS (EM03Q0U)
10 9
B B B B
5L 5J
W
G
V
BR
R A 2 2
Connector
Junction
G
J14
17 18
(Shielded)
3 1
CHS W/P Relay
W
G
R
B
(Shielded)
Junction Connector
1 1
W
A6
B
BR
BR
Crankshaft Position Sensor
A
2
3 EB1 A
5 2
J17
E1
BR
2 2 A
B A B A
BR
V
Connector
L
Junction
C 4(F)
C7
J18
V
B A B A
BR (Shielded)
(Shielded)
W
W
V
B
V
O
1 3H C 4(F), I11(C)
6 C Inverter B A
Connector
1 F 2 F 3 F
Junction
IG OUT OUT OUT
–W –V –U
J15
R–W
B A
AC W/P
(Shielded)
Relay
W
B
BR–W
G–W
Y–W
B–W
L–W
W–B
CANH CANL
Connector 3
W–B
Data Link
W
O
G
R
1
5 C 25 B 24 B 14 C 17 C
D1
2 A A
W1
W–B
Junction Connector
H14(A), H15(B), H16(C) Connector
Hybrid Vehicle Control ECU A
B A
W–B
W
A
J25
J24 A
W–B
Junction
W–B
Connector
A
B B
GR GR
B B
W W
V V
W–B
W–B
EF IH
353
PRIUS (EM03Q0U)
Air Conditioning
B
G1
Gateway ECU
B
7 4I
GR
GR
8 II1 5 B
A 7(A), A 8(B)
IG
6 5C 7 5C 7 4L 4 5C 8 5C
GR
MPX+ MPX2+
3 B 11 B
(∗1)
GR
6 5E 7 5E 19 13 5J 8 5G
Transmission
MPX1
Control ECU
Certification ECU
31
(∗2)
GR
W
B
MPX1
B
MPX2
T4
W
B
18
MPX2
S11
4 5
32
B
TX1+ TX1–
Multi–Display
(∗1)
B
9 II1
M13
16 4L 24
Power Source
MPX2
Control ECU
GR
14 4I
14 4K MPX1 P6
7
2 4D 8 5J
W
GR
6
Warning ECU
Tire Pressure
MPX1
GR
8 5K
MPX2 16
T11
13 5G
GR
ID Code Box
12 MPX2
B
13 4K MPX1 9 1G 13 5D
T5
17
17
B
2 4C MPX1
Body ECU
11 4D
W
B 5(A)
B B
GR
GR
B B
W W
V V
354
PRIUS (EM03Q0U)
(BAT)
10 5K 5 1K
Y
D
Connector
3 5J
Junction
J19
D
Y
A 7(A), A 8(B)
A/C Control Assembly 6 B
+B
GR
BR
W
G
R
B
Y
10 5J 11 5J 12 5J
11 5L 4 5D 3 5D
1 2 3 4
THR GND VO S5
BR
LG
B
6 IG2 7 IG2
A9
A/C Room Temp. Sensor
GR
BR
1 2
A/C Solar Sensor
A/C Thermistor
A10
A11
2 1
B
W–B
V V
IJ
355
PRIUS (EM03Q0U)
Air Conditioning
A 7(A), A 8(B)
A/C Control Assembly
BR
LG
LG
O
G
R
P
7 5J 15 5J 16 5J 14 5J
5 5H 14 5B 4 5B 15 5B
3 2 1 4 5
PT GND VZ MFACE MDEF
SB
W
G
M 10 3 9
6 IA2 AC1 EAC AC2
A16
Air Vent Mode Control Servo Motor
R
4
Rear DEF TEMP+
Dual
TEMP–
Pressure SW
P1
Inlet Air
1
C12
Combination SW
W–B
V V
EA
356
PRIUS (EM03Q0U)
FAN NO. 1 Relay
FAN NO. 2 Relay
BR
LG
G
P
L
L
A 7(A), A 8(B)
A/C Control Assembly 4 B 14 B 15 B 12 B 25 A 17 A 26 A
WIP RF CF RrDEF HT–2 PTC HT–1
TP SGTP S5TP AMC AMH TP1 SGTPI S5TPI AIR AIF IDH
20 A 14 A 13 A 19 B 17 B 19 A 4 A 3 A 22 B 23 B 18 B
LG
G
R
P
V
L
L
6 5J
4 5H
3 2 1 4 5 3 2 1 4 5
PT GND VZ MCOOL MHOT PT GND VZ Mrec Mfrs
R
M M
5 IA2
A15 A14
Air Mix Control Servo Motor Air Inlet Control Servo Motor
V
Converter
V V
357
PRIUS (EM03Q0U)
Air Conditioning
2 2 2
3 3 1 3B
B
BR
W
J10 R
Junction Connector
E V
E E E
2 2
2 2 2 2
1 3
1 3 1 3 PS HTR
Relay
PTC PTC
HTR 2 HTR 1
Relay Relay 2 5
P
L
2 5 2 5
2 2
L
BR
BR
Y
P
L
P
L
P12
3 PTC Heater 1
W+ R+
1
LR P13
PTC Heater
B– B– WB
2 4 2
W–B
W–B
W–B
W–B
V
W–B
EA
358
PRIUS (EM03Q0U)
System Outline
Air conditioning system operates when SW of multi–display or that of steering wheel is turned on. Turning on the SW sends
signal to A/C control assembly, running the air conditioning system.
1. Heater Blower Operation
Manual operation
When the blower speed is set to a certain level using the blower control SW, the A/C control assembly sends the signals to
the blower control to control the blower motor speed.
Auto operation
When the auto SW is pushed, the A/C control assembly calculates necessary blower speed from setting of SWs and input of
the sensors and sends the signals to the blower control to automatically control the blower motor speed.
2. Air Inlet Control Servo Motor Control
When the FRESH/RECIRC select SW is set to RECIRC, the air inlet control servo motor starts rotating to move the damper
toward the RECIRC side. The damper position is detected by the TERMINAL TPI of the A/C control assembly. The motor
continuously rotates until the damper reaches its stop position. When the FRESH/RECIRC select SW is set to FRESH, the
air inlet control servo motor starts rotating to move the damper toward the FRESH side. The damper position is detected by
the TERMINAL TPI of the A/C control assembly. The motor continuously rotates until the damper reaches its stop position.
In auto mode, A/C control assembly controls the damper to move to the best position for the conditions without operating the
mode select SW.
3. Air Vent Mode Control Servo Motor Control
When the mode select SW is pushed, the ECU in the A/C control assembly activates the air vent mode control servo motor.
The servo motor rotates to the position (FACE, BI–LEVEL, FOOT, FOOT/DEF, DEF) selected by using the mode select SW,
and moves the damper.
In auto mode, A/C control assembly controls the damper to move to the best position for the conditions without operating the
mode select SW.
4. Air Mix Control Servo Motor Control
Based on the set temperature by the temperature control SW, the ECU in the A/C control assembly sends a signal to the air
mix control servo motor. This signal drives the motor to reach the temperature set by the temperature control SW, and moves
the film damper.
5. Humidity Sensor Control
A/C control assembly detects humidity in passenger room when A/C is turned on, with humidity detecting function of
A/C room temp. sensor and controls to dehumidify for comfortable condition
6. Air Conditioning Operation
A/C control assembly calculates target cooled temperature from information such as that of operating SWs, room
temperature, humidity, ambient temperature and insolation to have target running speed of compressor assembly (Motor).
The calculated control signal is sent to inverter to drive compressor assembly (Motor) (Electric motor) with control of inverter,
resulting in operating A/C.
359
PRIUS (EM03Q0U)
Air Conditioning
: Parts Location
Code See Page Code See Page Code See Page
A6 46 E1 46 J19 50
A7 A 48 E4 A 49 J24 50
A8 B 48 E5 B 49 J25 50
A9 48 E6 C 49 M13 50
A10 48 E7 D 49 P1 47
A11 48 G1 49 P6 51
A14 48 H14 A 49 P12 51
A15 48 H15 B 49 P13 51
A16 48 H16 C 49 S7 A 51
B2 48 I11 C 47 S8 B 51
B3 A 48 J6 50 S9 C 51
B4 B 48 J10 50 S10 D 51
B5 A 48 J12 50 S11 51
C4 F 46 J14 50 T4 51
C7 46 J15 50 T5 51
C10 49 J16 50 T11 51
C12 49 J17 50 W1 47
D1 49 J18 50
: Relay Blocks
360
PRIUS (EM03Q0U)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A
30 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1C
1E
1G 30
1J
1K Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1L
31
1M
1N
3B
23
3C Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
3H 24
4C
4D
4F
4H 38 Instrument Panel Wire and Center Connector No.1 (Behind the Combination Meter)
4I
4K
4L
5B
5C
5D
5E
5G 42 Instrument Panel Wire and Center Connector No.2 (Instrument Panel Brace RH)
5H
5J
5K
5L
: Ground Points
361
PRIUS (EM03Q0U)