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

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Multiplex Communication System





MULTIPLEX COMMUNICATION: MULTIPLEX COMMUNICATION SYSTEM: TERMINALS OF ECU

1. CHECK MAIN BODY ECU

(a) Disconnect the 1B, 1E, 1F, 1L and E6 main body ECU connectors.









(b) Measure the voltage of the wire harness side connectors.

Standard voltage:





If the result is not as specified, there may be a malfunction on the wire harness side.

2. CHECK BACK DOOR ECU

(a) Disconnect the S2 ECU connector.





(b) Measure the voltage of the wire harness side connector.

Standard voltage:





If the result is not as specified, there may be a malfunction on the wire harness side.