Diagnosis Procedure

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

1. CHECK AUX SOUND SIGNAL CIRCUIT CONTINUITY 
   1. Turn ignition OFF.
   2. Disconnect AV control unit connector M123 and front auxiliary input jacks connector.
   3. Check continuity between AV control unit connector M123 and front auxiliary input jacks connector.

      AV control unit		Front auxiliary input jacks		Continuity
      Connector	Terminal	Connector	Terminal
      M123	24	M205	3	Yes
      	38		1

   4. Check continuity between AV control unit connector M123 and ground.

      AV control unit		Ground	Continuity
      Connector	Terminal
      M123	24	-	No
      	38

   Is inspection result normal? 

   YES: GO TO  2.

   NO: Repair or replace harness or connectors.

2. CHECK AUX SOUND SIGNAL GROUND CIRCUIT CONTINUITY 

   Check continuity between AV control unit connector M123 and front auxiliary input jacks connector.

   AV control unit		Front auxiliary input jacks		Continuity
   Connector	Terminal	Connector	Terminal
   M123	39	M205	2	Yes

   Is inspection result normal? 

   YES: GO TO  3.

   NO: Repair or replace harness or connectors.

3. CHECK AUX SOUND SIGNAL 
   1. Connect AV control unit connector M123 and front auxiliary input jacks connector.
   2. Turn ignition switch to ACC.
   3. Select AUX mode.
   4. Check signals between AV control unit connector M123 and ground.

      AV control unit connector M123		Condition	Reference value
      (+)	(-)
      Terminal	Terminal
      24	39	AUX mode selected
      38	39

   Is the inspection result normal? 

   YES: Replace front auxiliary input jacks. Refer to "REMOVAL AND INSTALLATION ".

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