Cruise Control - Inoperative/Malfunctioning
DIAGNOSTIC AIDSIMPORTANT: Perform the following in order to avoid misdiagnosis.
^ Inspect for proper operation of the brake lamps.
^ Inspect for proper operation of the transmission range switch.
^ Inspect throttle linkage for mechanical binding which could cause the system to malfunction
^ Inspect cruise control adjustment, should have minimum slack.
^ Inspect for stored Diagnostic Trouble Codes (DTCs) in the PCM. Refer to Powertrain OBD System Check in Computers and Control System.
^ EMI on the speed sensor signal circuit may cause erratic cruise control operation.
CONDITIONS FOR ENABLING CRUISE CONTROL
^ When vehicle speed is more than 40 km/h (25 mph)
^ When PARK, REVERSE, NEUTRAL, or 1st gear is not indicated.
^ When an over/undercharged battery condition does not exist.
^ With normal engine RPM.
^ Without high engine RPM (fuel cut-off).
TEST
Steps 1-8:
Steps 9-23:
Steps 24-37:
Steps 38-43:
