Diagnosis Procedure

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

1. CHECK COMPOSITE IMAGE SIGNAL CIRCUIT CONTINUITY 
   1. Turn ignition switch OFF.
   2. Disconnect AV control unit connector M164 and video distributor connector B25.
   3. Check continuity between AV control unit connector M164 and video distributor connector B25.

      AV control unit		Video distributor		Continuity
      Connector	Terminal	Connector	Terminal
      M164	107	B25	34	Yes
      	105		33

   4. Check continuity between AV control unit connector M164 and ground.

      AV control unit		Ground	Continuity
      Connector	Terminal
      M164	107	-	No

      Is the inspection result normal? 

      YES: GO TO 2.

      NO: Repair or replace harness or connectors.

2. CHECK COMPOSITE IMAGE SIGNAL 
   1. Connect AV control unit connector M164 and video distributor connector B25.
   2. Turn ignition switch ON.
   3. Check signal between terminals of video distributor connector B25.

      Video distributor connector B25		Condition	Reference value
      (+)	(-)
      Terminal	Terminal
      34	33	DVD, USB or front auxiliary input jacks image is displayed on headrest display.

      Is the inspection result normal? 

      YES: Replace video distributor. Refer to "REMOVAL AND INSTALLATION ".

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