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Home >> Audi >> 2025 >> Q3 Premium Plus >> Repair and Diagnosis (Single Page) >> Quick Lookups >> Wiring Diagrams >> OEM Wiring Diagrams 2.0L Gasoline Engine , DNNA >> OEM Wiring Diagrams 2.0L Gasoline Engine, DNNA >> Ignition/Starter Switch, Access/Start Authorization Control Module, Vehicle Electrical System Control Module, Data Bus On Board Diagnostic Interface, Engine/Motor Control Module

Ignition/Starter Switch, Access/Start Authorization Control Module, Vehicle Electrical System Control Module, Data Bus On Board Diagnostic Interface, Engine/Motor Control Module

GWWF3B-120190624Courtesy of AUDI OF AMERICA, LLC

Ignition/Starter Switch

J518 

Access/Start Authorization Control Module

J519 

Vehicle Electrical System Control Module

J533 

Data Bus on Board Diagnostic Interface

J623 

Engine/Motor Control Module

T6m 

6-Pin Connector, Black

T17a 

17-Pin Connector, Blue

T17ax 

17-Pin Connector, Blue

T17c 

17-Pin Connector, Brown

T17cx 

17-Pin Connector, Brown

T20a 

20-Pin Connector, Black

T32f 

32-Pin Connector, Black

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)

B384 

Powertrain CAN Bus High Connection 2 (in Main Wiring Harness)

B391 

Powertrain CAN Bus Low Connection 2 (in Main Wiring Harness)

B633 

Brake Pedal Switch Connection (in Main Wiring Harness)

Refer to the Applicable Access/Start Authorization System Wiring Diagram

*2 

For Vehicles with Keyless Access Authorization

*3 

Refer to Applicable Wiring Diagram for Multifunction Steering Wheel

*4 

For Vehicles Without Keyless Access Authorization

*5 

Refer to Applicable Wiring Diagram for Data Bus Networking

*6 

Through March 2024

*7 

From March 2024