Cruise Control - Inoperative/Malfunctioning

CRUISE CONTROL INOPERATIVE/MALFUNCTIONING

DIAGNOSTIC AIDS

CAUTION: Refer to SIR Caution in Service Precautions.

Disable the inflatable restraint steering wheel module when performing this diagnostic table. Refer to SIR Disabling and Enabling Zone 3 in Restraint Systems.

Perform the following in order to avoid misdiagnosis:
1. Inspect for proper operation of the stop lamps.
2. Inspect for proper operation of the clutch system, if equipped with manual transmission.
3. Observe the cruise set/coast and cruise resume/accel parameters in the scan tool PCM General Info Inputs data list while rotating the steering wheel to both stops and pressing and holding the steering wheel control switches. This will eliminate the possibility of a internally open or shorted inflatable restraint steering wheel module coil.
4. Rotate the steering wheel to both steering stops while separately activating each cruise control switch. With a scan tool, observe the associated cruise control switch parameter in the PCM General Info Inputs data list. This will help eliminate the possibility of a internally open or shorted inflatable restraint steering wheel module coil.

EMI on the vehicle speed sensor signal circuit may cause erratic cruise control operation.

For an intermittent condition, refer to Diagnostic Aids for Circuit Testing and Wiring Repair procedures.

CONDITIONS FOR ENABLING CRUISE CONTROL
- The vehicle speed is greater than 40 km/h (25 mph).
- The vehicle is not in PARK, REVERSE, NEUTRAL, or 1st gear.
- The system voltage is between 12-16 volts.

TEST

Steps 1 - 11:

Steps 12 - 25:

Step 26: