Wiring

WI-XML
Audi A3
Page 1 of 10
Current Flow Diagram
No. 88 / 1
Edition 10.2005
Automatic gearbox (09G)

from model year 2005
Notes:
For information concerning
Position of relays and fuses
Multi-pin connections
Control units and relays
Earth connections

List of Fitting Locations!

For information concerning
Fault Finding Programs
guided fault finding
WI-XML
Audi A3
Page 2 of 10
No. 88 / 2

Earth points and earth connections
- Earth point, lower part of left A-pillar
44
167
366
368
369
655
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- Earth connection 4, in engine compartment wiring harness

- Earth connection 1, in main wiring harness
- Earth point, on left headlight
white
black
red
brown
green
blue
grey
purple
yellow
orange
pink
No. 88 / 3
WI-XML
Page 3 of 10
Fuses, multifunction switch

F125 - Multifunction switch
J217 - Automatic gearbox control unit
SA6
- Fuse 6 on fuse holder A
SB28 - Fuse 28 on fuse holder B
SC14 - Fuse 14 on fuse holder C
T10n - 10-pin connector, black, near longitudinal member, front left
T10o - 10-pin connector, black (connector C)
T40
- 40-pin connector, black, on electronics box in engine
compartment (connector J)
T52
- 52-pin connector, black (connector A)
- Earth connection 4, in engine compartment wiring harness
167
B272
B298
U2
*
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- Positive connection (30), in main wiring harness

- Positive connection 2 (30), in main wiring harness
- Connection 1 (15), in automatic gearbox wiring harness
- applicable Current Flow Diagram for models with battery in
engine compartment
- applicable Current Flow Diagram for models with battery in
luggage compartment
WI-XML
Audi A3
Page 4 of 10
No. 88 / 4
Fuses, multifunction switch, Tiptronic switch

F125 - Multifunction switch
F189 - Tiptronic switch
J519 - Onboard supply control unit
J681 - Terminal 15 voltage supply relay 2
T2t
- 2-pin connector, black (connector L)
T10o - 10-pin connector, black (connector C)
T10p - 10-pin connector, black (connector A)
T16a - 16-pin connector, black (connector E)
T40
T52
- Positive connection (15), in main wiring harness
B273
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white
black
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brown
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purple
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orange
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B300
B318
*
**

- Positive connection 4 (30a), in main wiring harness
- for models with battery in engine compartment only
- for models with battery in luggage compartment only
No. 88 / 5
WI-XML
Page 5 of 10
Solenoid valves
N88
- Solenoid valve 1
N89
- Solenoid valve 2
N90
- Solenoid valve 3
N91
- Solenoid valve 4
N92
- Solenoid valve 5
N93
- Solenoid valve 6
N282 - Solenoid valve 9
N283 - Solenoid valve 10
T14b - 14-pin connector, black (connector A)
T52
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white
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WI-XML
Audi A3
Page 6 of 10
No. 88 / 6
Gearbox input speed sender, gearbox output speed sender

G93
- Gearbox oil temperature sender
G182 - Gearbox input speed sender
G195 - Gearbox output speed sender
N110 - Selector lever lock solenoid
T8s
- 8-pin connector, black (connector B)
T52
368
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No. 88 / 7
WI-XML
Page 7 of 10
Drive train CAN bus, K-diagnosis wiring

J...
- Engine control units
T16
- 16-pin connector, black, dash panel, driver side, bottom left
(diagnostic connector)
T52
- Connection 1 (drive train CAN bus, high), in main wiring
B383
harness
B390
B444
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**
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white
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purple
yellow
orange
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- Connection 1 (drive train CAN bus, low), in main wiring

harness
- Connection 1 (diagnosis), in main wiring harness
- applicable engine Current Flow Diagram
- applicable from November 2004
WI-XML
Audi A3
Page 8 of 10
No. 88 / 8
Selector lever locked in position P switch, terminal 15 voltage

supply relay
F319 - Selector lever locked in position P switch
J329 - Terminal 15 voltage supply relay
J527 - Steering column electronics control unit
J533 - Data bus diagnostic interface
T8h
- 8-pin connector, black (connector F)
T11c - 11-pin connector, brown (connector D)
T20d - 20-pin connector, yellow (connector A)
T40
366
368
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Audi A3
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white
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brown
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purple
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B383
- Connection 1 (drive train CAN bus, high), in main wiring

harness
B390
- Connection 1 (drive train CAN bus, low), in main wiring

harness
No. 88 / 9
WI-XML
Page 9 of 10
Terminal 50 voltage supply relay, ignition/starter switch

B
- Starter
D
- Ignition/starter switch
J527 - Steering column electronics control unit
J682 - Terminal 50 voltage supply relay
T8h
- 8-pin connector, black (connector F)
T12e - 12-pin connector, black (connector G)
T26
compartment (connector K)
T40
366
369
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B239

- Positive connection 1 (50), in interior wiring harness
WI-XML
Audi A3
Page 10 of 10
No. 88 / 10
Data bus diagnostic interface, control unit in dash panel insert

J285 - Control unit in dash panel insert
SB24 - Fuse 24 on fuse holder
T20d - 20-pin connector, yellow (connector A)
T32
- 32-pin connector, blue (connector A)
T40
- 40-pin connector, black on electronics box, in engine
369
B301
B340
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white
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blue
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purple
yellow
orange
pink

- Connection 1 (58d), in main wiring harness

Wiring

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WI-XML

Current Flow Diagram

Automatic gearbox (09G)

Position of relays and fuses

List of Fitting Locations!

Fault Finding Programs

guided fault finding

Current Flow Diagram

- Earth connection 4, in engine compartment wiring harness

Current Flow Diagram

Fuses, multifunction switch

- Positive connection (30), in main wiring harness

Current Flow Diagram

Fuses, multifunction switch, Tiptronic switch

Current Flow Diagram

- Positive connection 4 (30), in main wiring harness

Current Flow Diagram

Gearbox input speed sender, gearbox output speed sender

Current Flow Diagram

Drive train CAN bus, K-diagnosis wiring

- Connection 1 (drive train CAN bus, low), in main wiring

Current Flow Diagram

Selector lever locked in position P switch, terminal 15 voltage

- Earth connection 3, in main wiring harness

- Connection 1 (drive train CAN bus, high), in main wiring

- Connection 1 (drive train CAN bus, low), in main wiring

Current Flow Diagram

Terminal 50 voltage supply relay, ignition/starter switch

- Earth connection 4, in main wiring harness

Current Flow Diagram

Data bus diagnostic interface, control unit in dash panel insert

- Positive connection 5 (30), in main wiring harness

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