Image Switch Signal Circuit

IMAGE SWITCH SIGNAL CIRCUIT





Description
- Image switch signal is input from headrest display unit to video distributor, according to rear seat remote controller operation.
- When image switch signal is input from headrest display unit to video distributor, image output from AV control unit and image output from auxiliary input jacks switch.




Diagnosis Procedure
1.CHECK CONTINUITY IMAGE SWITCH SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect headrest display unit connector and video distributor connector.
3. Check continuity between headrest display unit harness connector and video distributor harness connector.





*1: Headrest display unit LH
*2: Headrest display unit RH
4. Check continuity between headrest display unit harness connector and ground.





*1: Headrest display unit LH
*2: Headrest display unit RH
Is the inspection result normal?
YES - GO TO 2.
NO - Repair harness or connector.
2.CHECK VIDEO DISTRIBUTOR VOLTAGE
1. Connect headrest display unit connector and video distributor connector.
2. Turn ignition switch ON.
3. Check voltage between video distributor harness connector and ground.






Is the inspection result normal?
YES - Replace video distributor. Service and Repair.
NO - Replace headrest display unit LH (RH). Exploded View.