Cruise Control - Inoperative/Malfunctioning

DIAGNOSTIC AIDS

IMPORTANT: 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 (DTC's in the PCM. Refer to Powertrain OBD System Check in engine controls.
^ EM 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 24-36:

Steps 37-43: