Cruise Control - Inoperative/Malfunctioning

DIAGNOSTIC AIDS

IMPORTANT: Perform the following in order to avoid misdiagnosis.

^ Inspect for proper operation of brake lamps and clutch switch, if equipped.
^ EMI on the speed sensor signal circuit may cause erratic cruise control operation.

CONDITIONS FOR ENABLING CRUISE CONTROL
The vehicle speed is greater than 40 km/h (25 mph).

TEST