U1431

Description

The communications line (METER -> VSP) sends signals needed for VSP system control from the combination meter.


DTC Logic


DTC DETECTION LOGIC








Diagnosis Procedure


1. CHECK COMMUNICATION LINE (METER -> VSP) SIGNAL CIRCUIT

1.Ignition switch OFF
2.Disconnect VSP control unit and combination meter connector.
3.Check continuity between VSP control unit harness connector and combination meter harness connector.





4.Check continuity between VSP control unit harness connector and ground.





Is the inspection result normal?
YES- GO TO 2.
NO- Repair harness or connector.


2. CHECK COMMUNICATION LINE (METER -> VSP) INPUT SIGNAL

1.Connect VSP control unit and combination meter connector.
2.Ignition switch ON.
3.Check voltage between VSP control unit harness connector and ground.






Is the inspection result normal?
YES- INSPECTION END
NO- Replace combination meter. Removal and Installation.