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)

Or, hide this message: temporarily or permanently

Cruise Control: Description and Operation

The cruise control system uses mechanical and electrical devices to maintain the vehicle speed at a driver selected setting between approximately 25-90 mph (40-145 km/h).

The cruise control module receives signals from the cruise control main switch, the brake pedal switch, cruise control switch, clutch pedal position switch or transmission range switch, and the vehicle speed sensor. The cruise control unit signals to the cruise control actuator and the transmission control module.