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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Shift Interlock: Description and Operation

With the ignition switch in the ON or START position, power is applied through the shift lock relay to the shift lock solenoid by the CB-11 METER fuse. When the brake switch is depressed, the relay is energized through the CB-6 STOP LIGHT fuse with the shift lever in the PARK position. The contacts are then opened, de-energizing the solenoid so that the shift lever can be moved to another position.