Inspection and Verification

Cruise Control

Inspection and Verification

1. Verify the customer concern.

2. Visually inspect for obvious signs of mechanical or electrical damage.

Visual Inspection Chart






3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.

4. Inspect for a damaged Cruise-Control Module (C-CM) bracket, bumper beam or front bumper cover. Repair all damaged components first. After the damage is repaired, carry out the vertical alignment procedure. Refer to Cruise Control Module (C-CM) (with Sensor) Adjustment Adjustments. If the C-CM (Cruise-Control Module) bracket is damaged, replace the bracket. Refer to Cruise-Control Module (C-CM) .

5. Verify the speedometer operates correctly without cruise control by test driving the vehicle. If the speedometer does not operate correctly, refer to Instrument Panel, Gauges and Warning Indicators.

6. Verify the stoplamps operate correctly with the ignition switch in the ON position. If the stoplamps do not operate correctly, refer to Lighting and Horns.

7. NOTE: Make sure to use the latest scan tool software release.
If the cause is not visually evident, connect the scan tool to the Data Link Connector (DLC).


8. NOTE: The Vehicle Communication Module (VCM) LED prove-out confirms voltage and ground from the DLC (Data Link Connector) are provided to the VCM (Vehicle Communication Module).
If the scan tool does not communicate with the VCM (Vehicle Communication Module) :

- check the VCM (Vehicle Communication Module) connection to the vehicle.

- check the scan tool connection to the VCM (Vehicle Communication Module).

- refer to No Power To The Scan Tool, to diagnose no power to the scan tool.


9. If the scan tool does not communicate with the vehicle:
- verify the ignition is ON.

- the air bag warning indicator prove-out confirms ignition ON (other indicators may NOT prove ignition is ON) confirms ignition ON. If ignition does not turn ON, refer to Steering Column to diagnose no power in RUN.

- verify the scan tool operation with a known good vehicle.

- refer to Inspection and Verification to establish a scan tool session.


10. NOTE: The ignition must be OFF to carry out the RFA (Remote Function Actuator) module self-test.
Carry out the self-test diagnostics for the Remote Function Actuator (RFA) module, C-CM (Cruise-Control Module), Steering Column Control Module (SCCM) and PCM.


11. If the DTCs retrieved are related to the concern, go to DTC Charts Cruise Control. For all other DTCs, refer to Body Control Systems.

12. If no DTCs related to the concern are retrieved, GO to Symptom Chart Symptom Related Diagnostic Procedures.