Cruise Control - Inoperative

Diagnostic Chart (Part 1 Of 3):

Diagnostic Chart (Part 2 Of 3):

Diagnostic Chart (Part 3 Of 3):

DIAGNOSTIC AIDS

IMPORTANT: Perform the following inspections in order to avoid misdiagnosis.

^ Inspect for proper operation of the brake lamps
^ Inspect the throttle linkage for mechanical binding which may cause the system to malfunction
^ Inspect the cruise control adjustment. The cruise control cable should have minimum slack.
^ Inspect for stored Diagnostic Trouble Codes(DTCs) in the PCM. Refer to A Powertrain On Board Diagnostic (OBD) System Check in Engine Controls.
^ EMI on the speed sensor signal circuit may cause erratic cruise control operation.

CONDITIONS FOR ENABLING CRUISE CONTROL
^ When the 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 overcharged/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 Engine Control for additional information.