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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Engine Start-Up


The following actions occur when the starter motor is engaged:

- The ECU receives a crank signal input when the starter relay is ENERGIZED.
- If the air intake preheat cycle is running, it will be aborted. The air intake heaters do not get ENERGIZED if an engine crank signal is sensed.