Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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CAN




MAIN LINE BETWEEN A-BAG AND AV 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
-A/C auto amp.
-AV control unit
4.Check the continuity between the A/C auto amp. harness connector and the AV control unit harness connector.
-Models with navigation system





-Models without navigation system





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 air bag diagnosis sensor unit and the AV
control unit.
NO- Replace the PCB harness.