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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I/O Mode Feedback For Vehicles Equipped With Keyless Entry

The MALL module electrical schematic differs between vehicles that have keyless entry and vehicles without keyless entry. For vehicles that are equipped with keyless entry, the audible feedback is different when activating any of the following items:
^ The power door lock switch
^ The transaxle gear selector
^ The keyless entry unlock, using the keyless entry transmitter

Body Control Module Diagnostic Information:




The above chart describes the feedback for this case:

Body Control Module Diagnostic Information:




For Pontiac vehicles, no bongs occur when shifting into the PARK position.
This is due to the ignition-OFF door unlock feature.

The above table lists the MALL inputs and outputs that should be evaluated during the input/output (I/O) mode: