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 THE DTC IS ACTIVE
1. Turn the ignition on.
2. With the scan tool, record and erase Adaptive Cruise Control (ACC) DTCs.
3. Cycle the ignition from off to on.
4. With the scan tool, read ACC DTCs.
  Does the scan tool display this DTC as active?
  
  Yes
  - Go To 2
  No
  - Go To 6
CHECK FOR BODY CONTROL MODULE (BCM) DTCS
1. With the scan tool, read BCM DTCs.
  Are there any BCM CAN Bus DTCs present?
  
  Yes
  - Refer to DIAGNOSIS AND TESTING and perform the appropriate diagnostic procedure.
  No
  - Go To 3
CHECK FOR STEERING COLUMN CONTROL MODULE (SCCM) DTCS
1. With the scan tool, read SCCM DTCs.
  Are there any SCCM DTCs present?
  
  Yes
  - Refer to the Steering Column Control Module (SCCM) DIAGNOSIS AND TESTING and perform the appropriate diagnostic procedure.
  No
  - Go To 4
CHECK THE SPEED CONTROL SWITCH
1. Turn the ignition off.
2. Replace the Speed Control Switch in accordance with the Service Information. Refer to SWITCH, SPEED CONTROL, REMOVAL .
3. Perform the ADAPTIVE CRUISE CONTROL VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  Does this DTC reset after performing the verification test?
  
  Yes
  - Go To 5
  No
  - Test Complete.
CHECK THE STEERING COLUMN CONTROL MODULE
1. Turn the ignition off.
2. Replace and program the Steering Column Control Module (SCCM) in accordance with the Service Information.
3. Perform the ADAPTIVE CRUISE CONTROL VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  Does this DTC reset after performing the verification test?
  
  Yes
  - Using the schematics as a guide, check the ACC module pins, terminals, and connectors for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, 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
  - 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.