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
If it fails: lemon-manuals.org.ua

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IMS

The scan tool displays Park, Park/Reverse, Reverse, Reverse/Neutral, Neutral, Neutral/Drive 4, Drive 4/Drive 3, Drive 3/Drive 2, Drive 2/Drive 1, Drive 1 or Invalid. This parameter is the decoded status of the four A/B/C/P inputs from the automatic transmission internal mode switch. If a valid combination of inputs is not received by the PCM, Invalid will be displayed.