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
   M80	16	M36	31	Existed

4. Check continuity between audio unit harness connector and ground.
   CONTINUITY REFERENCE CHART
   
   

   Audio unit		Ground	Continuity
   Connector	Terminal
   M80	16		Not existed

   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 and spiral cable connector.
2. Turn ignition switch ON.
3. Check voltage between audio unit harness connector.
   VOLTAGE REFERENCE CHART
   
   

   (+)		(-)		Voltage (Approx.)
   Audio unit		Audio unit
   Connector	Terminal	Connector	Terminal
   M80	16	M80	15	5.0 V

   Is the inspection result normal? 

   YES: GO TO 4.

   NO: Replace audio unit.

1. Turn ignition switch OFF.
2. Check steering switch. Refer to "COMPONENT INSPECTION ".

   Is the inspection result normal? 

   YES: INSPECTION END

   NO: Replace steering switch.