Diagnosis Procedure

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

1. CHECK HEADREST DISPLAY UNIT POWER SUPPLY AND GROUND CIRCUIT 

   Check headrest display unit power supply and ground circuits. Refer to "HEADREST DISPLAY UNIT: DIAGNOSIS PROCEDURE ".

   Is the inspection result normal? 

   YES: GO TO 2.

   NO: Repair or replace harness or connectors.

2. CHECK AV COMMUNICATION CIRCUIT CONTINUITY 
   1. Turn ignition switch OFF.
   2. Disconnect headrest display unit connectors.
   3. Check continuity between headrest display unit (driver seat) connector B202 and headrest display unit (passenger seat) connector B302.

      Headrest display unit (driver seat)		Headrest display unit (passenger seat)		Continuity
      Connector	Terminals	Connector	Terminals
      B202	26	B302	10	Yes
      	27		11

   4. Check continuity between headrest display unit (driver seat) connector B202 and ground.

      Headrest display unit (driver seat)		Ground	Continuity
      Connector	Terminals
      B202	26	-	No
      	27

      Is the inspection result normal? 

      YES: Replace headrest display unit (passenger seat). Refer to "REMOVAL AND INSTALLATION ".

      NO: Repair or replace harness or connectors.