Diagnosis Procedure

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM ".

1. CONNECTOR CHECK 

   Check the AV control unit and speaker connectors for the following:

   • Proper connection
   • Damage
   • Disconnected or loose terminals

     Is the inspection result normal? 

     YES: GO TO 2

     NO: Repair the terminals or connectors.

2. CHECK REAR DOOR SPEAKER SIGNAL CIRCUIT CONTINUITY 
   1. Disconnect AV control unit connector M44 and suspect rear door speaker connector.
   2. Check continuity between AV control unit connector M44 and suspect rear door speaker connector.

      AV control unit		Rear door speaker		Continuity
      Connector	Terminal	Connector	Terminal
      M44	36	D206 (LH)	1	Yes
      	37		2
      	45	D306 (RH)	1
      	46		2

   3. Check continuity between AV control unit connector M44 and ground.

      AV control unit		Ground	Continuity
      Connector	Terminal
      M44	36	-	No
      	37
      	45
      	46

      Is the inspection result normal? 

      YES: GO TO 3

      NO: Repair or replace harness or connectors.

3. CHECK REAR DOOR SPEAKER SIGNAL 
   1. Connect AV control unit connector M44 and suspect rear door speaker connector.
   2. Turn ignition switch to ACC.
   3. Push AV control unit POWER switch.
   4. Check signal between terminals of AV control unit connector M44.

      AV control unit connector M44		Condition	Reference value
      (+)	(-)
      Terminal	Terminal
      36	37	Audio signal output
      45	46

      Is the inspection result normal? 

      YES: Replace rear door speaker. Refer to "REMOVAL AND INSTALLATION ".

      NO: Replace AV control unit. Refer to "REMOVAL AND INSTALLATION - AV CONTROL UNIT ".