Steering Switch Ground Circuit Bose Audio Without Navigation

STEERING SWITCH GROUND CIRCUIT





Description
Transmits the steering switch signal to AV control unit.




Diagnosis Procedure
1.CHECK STEERING SWITCH SIGNAL GND CIRCUIT
1. Disconnect AV control unit connector and spiral cable connector.
2. Check continuity between AV control unit harness connector and spiral cable harness connector.





Is the inspection result normal?
YES - GO TO 2.
NO - Repair harness or connector.
2.CHECK SPIRAL CABLE
Check spiral cable.
Is the inspection result normal?
YES - GO TO 3.
NO - Replace spiral cable.
3.CHECK GROUND CIRCUIT
1. Connect AV control unit connector.
2. Check continuity between AV control unit harness connector and ground.





Is the inspection result normal?
YES - GO TO 4.
NO - Replace AV control unit. Exploded View Bose Audio Without Navigation.
4.CHECK STEERING SWITCH
1. Turn ignition switch OFF.
2. Check steering switch. SEE Component Inspection.
Is the inspection result normal?
YES - INSPECTION END
NO - Replace steering switch. Exploded View.




Component Inspection
Measure the resistance between the steering switch connector terminals 14 to 17 and 15 to 17.