Steering Switch Signal GND Circuit (Steering Switch To TEL Adapter Unit)

STEERING SWITCH SIGNAL GND CIRCUIT (STEERING SWITCH TO TEL ADAPTER UNIT)





Description
- Transmits the steering switch signal to TEL adapter unit.
- Transmits the steering switch signal to audio unit via TEL adapter unit.




Diagnosis Procedure
1.CHECK STEERING SWITCH SIGNAL GROUND CIRCUIT (STEERING SWITCH TO TEL ADAPTER UNIT)
1. Turn ignition switch OFF.
2. Disconnect TEL adapter unit connector and spiral cable connector.
3. Check continuity between TEL adapter 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. Exploded View.
3.CHECK GROUND CIRCUIT
1. Connect TEL adapter unit connector.
2. Check continuity between TEL adapter unit harness connector and ground.





Is the inspection result normal?
YES - GO TO 4.
NO - Replace TEL adapter unit. Removal And Installation Audio Without Navigation.
4.CHECK STEERING SWITCH
Check steering switch. SEE Component Inspection.
Is the inspection result normal?
YES - INSPECTION END
NO - Replace steering switch. Exploded View Audio Without Navigation.




Component Inspection





Measure the resistance between the steering switch connector.