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Home >> Audi >> 2025 >> Q3 Premium >> Repair and Diagnosis (Single Page) >> Quick Lookups >> Wiring Diagrams >> OEM Wiring Diagrams 2.0L Gasoline Engine , CZPA,CZRA,DSPA >> OEM Wiring Diagrams 2.0L Gasoline Engine, CZPA, CZRA, DSPA >> Ignition/Starter Switch, Access/Start Authorization Control Module, Vehicle Electrical System Control Module, Steering Column Electronics Control Module, Fuel Pump Control Module, Engine/Motor Control Module
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Ignition/Starter Switch, Access/Start Authorization Control Module, Vehicle Electrical System Control Module, Steering Column Electronics Control Module, Fuel Pump Control Module, Engine/Motor Control Module

Fig 1: Ignition/Starter Switch, Access/Start Authorization Control Module, Vehicle Electrical System Control Module, Steering Column Electronics Control Module, Fuel Pump Control Module, Engine/Motor Control Module Wiring Diagram
GWWF3B-088060624Courtesy of AUDI OF AMERICA, LLC

Ignition/Starter Switch

J518 

Access/Start Authorization Control Module

J519 

Vehicle Electrical System Control Module

J527 

Steering Column Electronics Control Module

J538 

Fuel Pump Control Module

J623 

Engine/Motor Control Module

T5l 

5-Pin Connector, Black

T6m 

6-Pin Connector, Black

T14b 

14-Pin Connector, Black

T14c 

14-Pin Connector, Brown

T16m 

16-Pin Connector, Black

T17a 

17-Pin Connector, Blue

T17ax 

17-Pin Connector, Blue

T17c 

17-Pin Connector, Brown

T17cx 

17-Pin Connector, Brown

T40a 

40-Pin Connector, Black

T73a 

73-Pin Connector, Black

T73b 

73-Pin Connector, Black

T91b 

91-Pin Connector, Black

TALU 

Coupling Point on Left A-Pillar, Bottom

B273 

Positive Connection (15) (in Main Wiring Harness)

B633 

Brake Pedal Switch Connection (in Main Wiring Harness)

For Vehicles Without Access/Start Authorization System

*2 

For Vehicles with Access/Start Authorization System

*3 

Refer to Applicable Fuel System Wiring Diagram

*4 

Refer to Applicable Wiring Diagram for Multifunction Steering Wheel

*5 

For Vehicles Without Heated Steering Wheel

*6 

For Vehicles with Cruise Control System

*7 

Depending on Equipment

*8 

For Vehicles with Heated Steering Wheel