Cruise Control - Inoperative/Malfunctioning
IMPORTANT: 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 Diagnostic System Check - Computers and Control Systems in Computers and Control Systems.
^ 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 I undercharged battery condition DOES NOT exist.
^ With normal engine RPM.
^ Without high engine RPM. Refer to Powertrain Control Module (PCM) Description in Computers and Control Systems for additional information.
TEST
Steps 1-4:
Steps 5-17:
Steps 18-30:
Steps 31-43:
