Diagnostic Test

WARNING: This page is about a different car, the 2017 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR AN ACTIVE DTC
1. With the scan tool, read ACC DTCs and record on the repair order.
2. With the scan tool, erase Adaptive Cruise Control (ACC) DTCs.
3. Cycle the ignition switch from off to on at least five times, leaving the ignition on for a minimum of 90 seconds per cycle.
4. With the scan tool, read ACC DTCs.
  Is the DTC active?
  
  Yes
  - With a scan tool, program the Adaptive Cruise Control (ACC) Module with latest software version and align the ACC Module in accordance with the Service Information.
  - After the above procedure, Go To 2
  No
  - Go To 3
CONTINUED ACTIVE DTC AFTER PROGRAMING
1. With the scan tool, read ACC DTCs.
  Does the scan tool display this DTC as active after programming?
  
  Yes
  - Replace and align the Adaptive Cruise Control (ACC) Module in accordance with the Service Information. Refer to MODULE, ADAPTIVE CRUISE CONTROL (ACCM), REMOVAL .
  - Perform the ADAPTIVE CRUISE CONTROL VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Test complete.
CHECK THE WIRING AND CONNECTORS
1. The conditions necessary to set the DTC are not present at this time.
2. Using the schematics as a guide, inspect the wiring and connectors specific to this Module. Wiggle the wiring and connectors while checking for shorted and open circuits.
3. Check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
4. Check Service Bulletins for any possible causes that may apply.
  Were there any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the ADAPTIVE CRUISE CONTROL VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Test complete.