Diagnosis Procedure

VEHICLE SPEED SIGNAL CIRCUIT


Description

Transmits vehicle speed signal to rear seatback power return control unit.




VEHICLE SPEED SIGNAL CIRCUIT


Diagnosis Procedure

1.CHECK VEHICLE SPEED OPERATION
1. Check speed meter operate normally.
Is the inspection result normal?
YES - GO TO 2.
NO - Refer to Work Flow.
2.CHECK VEHICLE SPEED INPUT SIGNAL
Check voltage between rear seatback power return control unit harness connector and ground.






Is the inspection result normal?
YES - GO TO 3.
NO - Refer to Work Flow.
3.CHECK VEHICLE SPEED SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect rear seatback power return control unit connector and unified meter and A/C amp. connector.
3. Check continuity between power return control unit harness connector and unified meter and A/C amp. harness connector.





4. Check continuity between rear seatback power return control unit harness connector and ground.





Is the inspection result normal?
YES - GO TO 4.
NO - Repair or replace harness.
4.CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident.
- INSPECTION END