Diagnosis Procedure

Regarding Wiring Diagram information, refer to WIRING DIAGRAM .

1. CHECK CONTINUITY IMAGE SWITCH SIGNAL CIRCUIT
   
   
   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	10	B202 (driver seat)	7	Yes
      	7		23
      	9	B302 (passenger seat)	7
      	5		23

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

      Video distributor		Ground	Continuity
      Connector	Terminal
      B24	10	-	No
      	9

   Is the inspection result normal?

   YES 

   GO TO STEP 2  .

   NO 

   Repair or replace harness or connectors.

2. CHECK VIDEO DISTRIBUTOR VOLTAGE
   
   
   1. Connect video distributor connector B24 and headrest display unit connectors.
   2. Turn ignition switch ON.
   3. Check voltage between terminals of video distributor connector B24.

      Video distributor connector B24		Condition	Voltage (Approx.)
      (+)	(-)
      Terminal	Terminal
      10	7	DVD, USB or front auxiliary input jacks image is displayed on headrest display.	0.5 V
      		DVD, USB or rear auxiliary input jacks image is displayed on headrest display.	4.5 V
      9	5	DVD, USB or front auxiliary input jacks image is displayed on headrest display.	0.5 V
      		DVD, USB or rear auxiliary input jacks image is displayed on headrest display.	4.5 V

   Is the inspection result normal?

   YES 

   Replace video distributor. Refer to REMOVAL AND INSTALLATION .

   NO 

   Replace headrest display unit. Refer to REMOVAL AND INSTALLATION .