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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Information Bus: Service Precautions

Precautions For CAN Communication System

- The length of a loose twist (1) in a twist pair wire harnesses of the CAN lines except around the connector (3) should be within 100 mm (3.9 in.). Refer to the circuit diagram to identify the CAN lines. Excessively loosed lines are more susceptible to interference by electric noise.






- Do not connect CAN line terminals using a bypass wire (1). Doing so makes, the CAN line receive electric noise interference.