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.
   68	Ignition signal	29 (5A)
   19	Battery power supply	15 (15A)
   7	ACC power supply	65 (10A)

   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. Turn ignition switch OFF.
   2. Disconnect AV control unit connectors M161 and M163.
   3. Check voltage between AV control unit connectors and ground.

      AV control unit		Ground	Condition	Voltage (Approx.)
      Connector	Terminal
      M163	68	-	Ignition switch: ON	Battery voltage
      M161	7		Ignition switch: ACC
      	19		Ignition switch: OFF

   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 AV control unit connector M161 terminal 20 and ground.

      AV control unit		Ground	Continuity
      Connector	Terminal
      M161	20	-	Yes

   Is the inspection result normal?

   YES 

   Inspection End.

   NO 

   Repair or replace harness or connectors.