Cruise Control Vacuum Solenoid: Description and Operation

Purpose

Maintain set speed.

Vent vacuum to disable system, if there is a brake application or the switch is turned off.

Operation

Control Module maintains set speed by actuating the vent and vacuum solenoids through the circuit ground.

- When the PCM supplies a ground to the vacuum and vent solenoids, the speed control system opens the throttle plate.

- When the PCM removes the ground from the vacuum and vent solenoids, the throttle blade closes.