Diagnosis Procedure

Regarding Wiring Diagram information, refer to WIRING DIAGRAM .

1. CHECK FUSE
   
   

   Check that the following fuses are not blown.

   Terminal No.	Signal name	Fuse No.
   10	Battery power supply	11 (15A)
   11		12 (15A)

   Are the fuses blown?

   YES 

   Replace the blown fuse after repairing the affected circuit.

   NO 

   GO TO STEP 2  .

2. CHECK POWER SUPPLY CIRCUIT
   
   
   1. Disconnect BOSE speaker amp. connector B129.
   2. Check voltage between BOSE speaker amp. connector B129 and ground.

      BOSE speaker amp.		Ground	Voltage (Approx.)
      Connector	Terminal
      B129	10	-	Battery voltage
      	11

   Is the inspection result normal?

   YES 

   GO TO STEP 3  .

   NO 

   Repair or replace harness or connectors.

3. CHECK GROUND CIRCUIT
   
   
   1. Turn ignition switch OFF.
   2. Check continuity between BOSE speaker amp. connector B129 and ground.

      BOSE speaker amp.		Ground	Continuity
      Connector	Terminal
      B129	7	-	Yes
      	12

   Is the inspection result normal?

   YES 

   Inspection End.

   NO 

   Repair or replace harness or connectors.