Bose Audio With Navigation

STEERING SWITCH SIGNAL B CIRCUIT


Diagnosis Procedure

1.CHECK STEERING SWITCH SIGNAL B 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.





3. Check continuity between AV control unit harness connector and ground.





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. Exploded View.
3.CHECK AV CONTROL UNIT VOLTAGE
1. Connect AV control unit connector and spiral cable connector.
2. Turn ignition switch ON.
3. Check voltage between AV control unit harness connector.





Is the inspection result normal?
YES - GO TO 4.
NO - Replace AV control unit. Exploded View Bose Audio With Navigation.
4.CHECK STEERING SWITCH
1. Turn ignition switch OFF.
2. Check steering switch. Bose Audio With Navigation.
Is the inspection result normal?
YES - INSPECTION END
NO - Replace steering switch. Steering Wheel.