Diagnosis Procedure

STEERING SWITCH SIGNAL GND CIRCUIT


Description

Transmits the steering switch signal to audio unit.




STEERING SWITCH SIGNAL GND CIRCUIT


Diagnosis Procedure

1.CHECK STEERING SWITCH SIGNAL A CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect audio unit connector and spiral cable connector.
3. Check continuity between audio 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 audio unit connector and spiral cable connector.
2. Turn ignition switch ON.
3. Check continuity between audio unit harness connector.





Is the inspection result normal?
YES - GO TO 4.
NO - Replace audio unit.
4.CHECK STEERING SWITCH
Check steering switch. Refer to Component Inspection.
Is the inspection result normal?
YES - INSPECTION END
NO - Replace steering switch.