CAN

MAIN LINE BETWEEN TPMS AND HVAC CIRCUIT

Diagnosis Procedure


1. CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1.Turn the ignition switch OFF.
2.Disconnect the battery cable from the negative terminal.
3.Disconnect the following harness connectors.
- ECM
-Low tire pressure warning control unit
-A/C auto amp.
4.Check the continuity between the low tire pressure warning control unit harness connector and the A/C
auto amp. harness connector.





Is the inspection result normal?
YES (Present error)-Check CAN system type decision again.
YES (Past error)-Error was detected in the main line between the low tire pressure warning control unit and the A/C auto amp.
NO- Replace the PCB harness.