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Home >> Audi >> 2021 >> A4 Quattro Premium Plus, 2.0L Eng VIN B >> Repair and Diagnosis (Single Page) >> Electrical >> Wiring Diagrams >> OEM Wiring Diagrams >> Wiring Diagrams >> Access and Start Authorization >> Data Bus on Board Diagnostic Interface, Comfort System CAN Bus High Connection 1 (in Main Wiring Harness), Comfort System CAN Bus High Connection 3 (in Main Wiring Harness), Comfort System CAN Bus Low Connection 1 (in Main Wiring Harness), Comfort System CAN Bus Low Connection 3 (in Main Wiring Harness)

Data Bus on Board Diagnostic Interface, Comfort System CAN Bus High Connection 1 (in Main Wiring Harness), Comfort System CAN Bus High Connection 3 (in Main Wiring Harness), Comfort System CAN Bus Low Connection 1 (in Main Wiring Harness), Comfort System CAN Bus Low Connection 3 (in Main Wiring Harness)

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J533 -  Data Bus on Board Diagnostic Interface

T54 -  54-Pin Connector, Black

B397 -  Comfort System CAN Bus High Connection 1 (in Main Wiring Harness)

B398 -  Comfort System CAN Bus High Connection 2 (in Main Wiring Harness)

B399 -  Comfort System CAN Bus High Connection 3 (in Main Wiring Harness)

B406 -  Comfort System CAN Bus Low Connection 1 (in Main Wiring Harness)

B407 -  Comfort System CAN Bus Low Connection 2 (in Main Wiring Harness)

B408 -  Comfort System CAN Bus Low Connection 3 (in Main Wiring Harness)