Diagnostic Test

WARNING: This page is about a different car, the 2015 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.

VERIFY DTC IS ACTIVE

Using a scan tool, read ACC DTCs.
Is this DTC active?

Yes
- Check for any controller updates. If no updates are available, erase DTC and cycle the ignition off then on. If the DTC resets, repeat erasing the DTC and cycling the ignition at least 3 times. If the DTC continues to reset, replace and program the Adaptive Cruise Control (ACC) module in accordance with the Service Information. Refer to MODULE, ADAPTIVE CRUISE CONTROL, REMOVAL .
- Perform the ADAPTIVE CRUISE CONTROL VERIFICATION TEST. Refer to STANDARD PROCEDURE .
No
- No repair is necessary. Make sure the lens is free of dirt, damage, and other obstructions. Clear the DTC and verify the proper operation of the ACC system.
- Perform the ADAPTIVE CRUISE CONTROL VERIFICATION TEST. Refer to STANDARD PROCEDURE .