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: DIAGNOSTIC TROUBLE CODE CHART

If a trouble code is displayed during DTC check, check the circuit corresponding to the code in the table below. Proceed to the page given for the circuit.

MULTIPLEX COMMUNICATION SYSTEM





*1: w/ Auto Wiper System

When DTCs indicating "+B or GND short malfunction of communication bus" (B1214, B1215, etc.) are detected at the same time as DTCs indicating "communication stop" (B1200, B1207, etc.), repair DTCs indicating "+B or GND short malfunction of communication bus" first.