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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Brake Switch (Cruise Control): Description and Operation

The brake switch is used to disengage the cruise control system when the brake and/or clutch pedal is depressed. The electrical release interrupts the electrical signal to the controller to disengage the system. The vacuum release vents trapped vacuum in the servo into the atmosphere, allowing the servo to return to throttle idle position. These release mechanisms can also be found combined with TCC and/or stop lamp switches.