Cruise Control Servo

Pulls the throttle cable against a vacuum diaphragm to hold a set speed on older cruise control systems. Drive-by-wire vehicles have no servo and operate the throttle directly, so servo faults belong to earlier designs. A leaking diaphragm gives the characteristic symptom of cruise control that engages and then bleeds off speed on a climb.

Also known as: cruise servo, cruise actuator, speed control servo, cruise control actuator

Referenced by 11 codes

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Codes involving this component (11)

Other components in Engine Management and Sensors

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