DTC P0200/97 Injector Circuit / Open
DTC P0200/97 Injector Circuit / Open
DTC P0200/97 Injector Circuit / Open
EDU
COM3
Maximum 150 V
Command
Pulse
COM1
Injector
IJT#1 INJ#1
IJT#4 INJ#4
ECM
IJT#2 Control INJ#2
IJT#3 Circuit INJ#3
INJF (IJF)
Confirmation
Pulse
GND
EDU Connector
I5 I6
MONITOR DESCRIPTION
P0200/97 (Open or short in EDU or injector circuit):
The ECM continuously monitors both injection command (IJT) signals and injection confirmation (IJF) sig-
nals. This DTC will be set if the ECM judges that the number of IJT signals and IJF signals are inconsistent.
The injectors are grounded over a Field Effect Transistor (FET) and a serial resistor. This resistor creates
a voltage drop, which is monitored by the EDU (injector drive circuit), in relation to the current drawn by the
injector. When the injector current becomes too high, the voltage drop over the resistor exceeds a specified
level and no IJF signal for that cylinder is sent to the ECM.
P0200/97 refers to a malfunction in the EDU or injector circuit.
If this DTC is set, the ECM enters fail–safe mode and limits the engine power. The fail–safe mode continues
until the engine switch is turned OFF.
Malfunction Detection:
Command Signal (IJT)
ECM EDU
Confirmation Signal (IJF)
ON
Injection
OFF
Command Signal IJT
Injection Abnormal
Confirmation Signal IJF
A81495
Y
Normal G37535
MONITOR STRATEGY
Required sensors IJF signal from EDU
Frequency of operation Continuous
Duration 10 seconds
MIL operation 1 driving cycle
WIRING DIAGRAM
J22 ECM
(*1) (*2) J/C
10 C4 1
B B B
IM4 IC4 E14 +B
C C
Engine Room R/B C17 8
W–G W–G
B IC4 E14 MREL
2
B EF1 Relay J/C
D D D D 2
L L
L J22 J23 J22 J23 E15 BATT
2
5 3 (*1) (*2) (*1) (*2)
W–B A5 10
2 2 B–W B–W
2 1 IC4 E14 IREL
C/OPN or EDU Relay EDU 7 25
B BR
2 2 IJF E4 E17 INJF
1 2
6 24
B B–W #1
2 2 IJT#1 E4 E17
B 5 3
3 23
L #2
EF1 IJT#2 E4 E17
L B
2 1 2 2 22
1 2 R–L
B IJT#3 E4 E17 #3
5 21
8 C8 Y
IJT#4 E4 E17 #4
L L
IM4 IC4
(*1) (*2) I6
4 Injector 1
W B
W–B (*3) INJ#1 E3
2 1
5
COM1 E3
I9
B 2 EB1 3 Injector 4
J2 BR
INJ#4 E3
J/C 1 EB1
B B
B BR
I7
2 Injector 2
(*3) P L
INJ#2 E3
2 1
8
COM2 E3
W–B B I8
1 Injector 3
Y L
INJ#3 E3
BR 8 2 2
E3 +B
E
1
W–B W–B
GND E4
E
EB Battery
EG *1: LHD EF J11
*2: RHD J/C
*3: Shielded
G38697
05–550
DIAGNOSTICS – ECD SYSTEM (1KD–FTV)(From August, 2004)
Warning: Terminals COM1, COM2, and INJ#1 to 4 are high–voltage High–voltage Area
ECM EDU
COM1 Injector
#1 IJT#1 INJ#1
#4 IJT#4 INJ#4
A B
#2 IJT#2 INJ#2
#3 IJT#3 INJ#3
A81508
HINT:
In order to save time during the inspection, follow these instructions. When checking the ECM side first, in-
spect the trouble areas listed to the right of A to D (in that order).
Malfunction Point Trouble Area
A ECM
B (if A is normal) Open or short in ”#1 to #4 (ECM)” – ”IJT#1 to IJT#4 (EDU)” harness or connector
S Open or short in ”INJ#1 to INJ#4 (EDU)” – ”COM1 and/or COM2” (EDU) circuit
C (if A and B are normal) S Injector
S EDU
D (if A, B and C are normal) Open or short in ”INJ (EDU)” – ”INJF (ECM)” circuit
#2
20 msec./Division A09438
05–551
DIAGNOSTICS – ECD SYSTEM (1KD–FTV)(From August, 2004)
(b) Reference:
Signal Waveform
Inspection using an oscilloscope.
While idling the engine, the correct waveform is shown in
the diagram on the left.
2 V/
INJF Inspection Points Specified Condition
Division
C and D Correct waveform is shown
20 msec./Division A09437
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the intelligent tester II. Freeze frame data records the engine conditions when
a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was
running or stopped, if the engine was warmed up or not, and other data from the time the malfunction oc-
curred.
1 INSPECT INJECTOR ASSY
OK
05–552
DIAGNOSTICS – ECD SYSTEM (1KD–FTV)(From August, 2004)
Wire Harness Side (a) Check the wire harness between the injector and EDU
(INJ terminal).
I6 (1) Disconnect the I6, I7, I8 and I9 injector connectors.
I7 (2) Disconnect the E3 EDU connector.
1 2 (3) Measure the resistance of the wire harness side
I8
I9 connectors.
Injector Standard:
Tester Connection Specified Condition
I6–2 – E3–4 (INJ#1) Below 1 Ω
I7–2 – E3–2 (INJ#2) Below 1 Ω
E3
I8–2 – E3–1 (INJ#3) Below 1 Ω
EDU
I9–2 – E3–3 (INJ#4) Below 1 Ω
INJ#2 INJ#4 INJ#1 COM1 I6–1 – E3–5 (COM1) Below 1 Ω
I7–1 – E3–6 (COM2) Below 1 Ω
I8–1 – E3–6 (COM2) Below 1 Ω
I9–1 – E3–5 (COM1) Below 1 Ω
I6–2 or E3–4 (INJ#1) – Body ground 10 kΩ or higher
I7–2 or E3–2 (INJ#2) – Body ground 10 kΩ or higher
INJ#3 COM2
A80992
I8–2 or E3–1 (INJ#3) – Body ground 10 kΩ or higher
A84815 A99847
I9–2 or E3–3 (INJ#4) – Body ground 10 kΩ or higher
I6–1 or E3–5 (COM1) – Body ground 10 kΩ or higher
I7–1 or E3–6 (COM2) – Body ground 10 kΩ or higher
I8–1 or E3–6 (COM2) – Body ground 10 kΩ or higher
I9–1 or E3–5 (COM1) – Body ground 10 kΩ or higher
OK
05–553
DIAGNOSTICS – ECD SYSTEM (1KD–FTV)(From August, 2004)
#1
#3
A80994
A80456 A99849 NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
GND (–)
E4
EDU
A81845
A80994 NG CHECK INJECTOR DRIVER POWER SOURCE
A99850 CIRCUIT (BATTERY – EDU)
OK
05–554
DIAGNOSTICS – ECD SYSTEM (1KD–FTV)(From August, 2004)
(a) While idling the engine, check the waveform of the ECM
connectors using an oscilloscope.
E17 E16 Standard:
INJF
Tester Connection Specified Condition
E17–24 (#1) – E16–7 (E1) Correct waveform is shown
E17–23 (#2) – E16–7 (E1) Correct waveform is shown
E17–22 (#3) – E16–7 (E1) Correct waveform is shown
#1 #2 #3 #4 E1 E17–21 (#4) – E16–7 (E1) Correct waveform is shown
E17–25 (INJF) – E16–7 (E1) Correct waveform is shown
#1
#3 5 V/
Division
#4
#2
20 msec./Division
2 V/
INJF
Division
A66060
A09438
A09437 20 msec./Division
A99851 NG REPLACE ECM (See Pub. No. RM990E, page
10–34)
NOTICE:
After replacing the ECM, allow for ECM learning start the
engine and idle it until it is fully warmed up.
OK
NEXT
HINT:
After clearing the DTC, start the engine and let it idle for 30 seconds. Confirm that P0200/97 is not output
again.