Cruise Control - Inoperative/Malfunctioning
DIAGNOSTIC AIDSIMPORTANT: Perform the following in order to avoid misdiagnosis.
^ Inspect for proper operation of brake lamps.
^ Inspect throttle linkage for mechanical binding which could cause the system to malfunction.
^ Inspect cruise control cable adjustment, should have minimum slack.
^ Inspect for stored Diagnostic Trouble Codes (DTCs) in the PCM. Refer to Diagnostic System Check - Computers and Controls Systems in Computers and Controls Systems. Initial Inspection and Diagnostic Overview
^ 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.
TEST
Steps 1-9:
Steps 10-23:
Steps 24-35:
Steps 36-43:
