Diagnosis Procedure

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

1. CHECK COMPOSITE IMAGE SIGNAL CIRCUIT CONTINUITY 
   1. Turn ignition switch OFF.
   2. Disconnect video distributor connector B24 and headrest display unit connectors.
   3. Check continuity between video distributor connector B24 and headrest display unit connectors.

      Video distributor		Headrest display unit		Continuity
      Connector	Terminal	Connector	Terminal
      B24	32	B202 (driver seat)	5	Yes
      	31		21
      	28	B302 (passenger seat)	5	Yes
      	27		21

   4. Check continuity between video distributor connector B24 and ground.

      Video distributor		Ground	Continuity
      Connector	Terminal
      B24	32	-	No
      	28

      Is the inspection result normal? 

      YES: GO TO 2.

      NO: Repair or replace harness or connectors.

2. CHECK COMPOSITE IMAGE SIGNAL 
   1. Connect video distributor connector B24 and headrest display unit connectors.
   2. Turn ignition switch ON.
   3. Check signal between terminals of headrest display unit connectors.

      Headrest display unit			Condition	Reference value
      Connector	(+)	(-)
      	Terminal	Terminal
      B202 (driver seat)	5	21	DVD, USB or front auxiliary input jacks image is displayed on headrest display.
      B302 (passenger seat)

      Is the inspection result normal? 

      YES: Replace headrest display unit. Refer to "REMOVAL AND INSTALLATION ".

      NO: Replace video distributor. Refer to "REMOVAL AND INSTALLATION ".