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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Ignition Lock: Description and Operation

The mechanical block is a cable mounted finger added to the lock module. The cable passes through the lock module only when the shift lever is in the P or N position. This prevents turning the ignition lock cylinder to the START position when the transmission is in DRIVE.

When the shift lever is in either the P or N position, the cable passes through the lock module notches, allowing the lock cylinder to turn to the OFF-LOCK Position.