Diagnosis Procedure

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.
   CONTINUITY REFERENCE CHART
   
   

   Audio unit		Spiral cable		Continuity
   Connector	Terminal	Connector	Terminal
   M81	15	M36	33	Existed

4. Connect audio unit connector.

   Is the inspection result normal? 

   YES: GO TO 2.

   NO: Repair harness or connector.

Check spiral cable.

Is the inspection result normal? 

YES: GO TO 3.

NO: Replace spiral cable.

1. Connect audio unit connector.
2. Check continuity between audio unit harness connector and ground.
   CONTINUITY REFERENCE CHART
   
   

   Audio unit		Ground	Continuity
   Connector	Terminal
   M81	15		Existed

   Is the inspection result normal? 

   YES: GO TO 4.

   NO: Replace audio unit.

Check steering switch. Refer to "COMPONENT INSPECTION ".

Is the inspection result normal? 

YES: INSPECTION END

NO: Replace steering switch.