Diagnostic Test
- 1) DTC IS ACTIVE NOTE: To help in the service of the Adaptive Cruise Control (ACC) System, it is recommended speaking to the customer to find out what type of environment they were driving in when the cruise concern took place. Heavy rain, snow, ice and fog can cause the ACC system to become unavailable. This should be considered normal operation and no repair is necessary.NOTE: Vehicles that have had the suspension modified and/or a aftermarket grill installed that blocks the ACC sensor can cause the Adaptive Cruise Control (ACC) system not to operate properly.
With a scan tool, select View DTCs.
Is the DTC active at this time?
Yes
- Go To 2).
No
- No repair is necessary. Ensure the lens is free of dirt, damage or other obstruction. Clear the DTC and verify the proper operation of the ACC system.
- 2) ACC SENSOR LENS NOTE: Ensure the ACC Sensor lens is free from dirt and/or any debris (mud, dirt, ice, road debris) that would compromise the function of the ACC system.
Perform a thorough visual and physical inspect of the ACC Module, look for a missing sensor lens or a damaged lens.
Is the lens damaged or missing?
Yes
- Replace the ACC Module in accordance with the Service Information.
- Perform ACC MODULE VERIFICATION TEST . See STANDARD PROCEDURE .
No
- Check the ACC Module harness connector terminals for corrosion, damage, or terminal push out. Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and Ground circuits. Repair as necessary. If the connector and wiring are found to be OK, replace the ACC Module in accordance with the service information.
- Perform ACC MODULE VERIFICATION TEST . See STANDARD PROCEDURE .