Cruise Control - Inoperative

Diagnostic Chart (Part 1 Of 4):

Diagnostic Chart (Part 2 Of 4):

Diagnostic Chart:

Diagnostic Chart (Part 4 Of 4):

DIAGNOSTIC AIDS

IMPORTANT: Perform the following in order to avoid misdiagnosis:
^ Inspect for proper operation of the brake lamps.
^ 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 A Powertrain On Board Diagnostic (OBD) System Check Powertrain OBD System check 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 by the Park Neutral Position Switch.
^ When an over undercharged battery condition DOES NOT exist.
^ With normal engine RPM.
^ Without high engine RPM (fuel cut-off). Refer to Powertrain Control Module (PCM) Description in Computers and Control Systems for additional information.