Diagnostic Test

CHECK FOR AN ACTIVE DTC
1. With the scan tool, read Adaptive Cruise Control (ACC) DTCs and record on the repair order.
2. With the scan tool, erase ACC Module DTCs.
3. Turn the ignition off for ten seconds, then start the engine.
4. With the scan tool, read ACC DTCs.
  Did the DTC return?
  
  Yes
  - Go To 2
  No
  - Perform the TESTING FOR AN INTERMITTENT CONDITION procedure. Refer to TESTING FOR AN INTERMITTENT CONDITION .
CHECK THE FFCM FOR DTCS
1. With the scan tool, read Forward Facing Camera Module (FFCM) DTCs and record on the repair order.
  Are there any DTCs set in the FFCM?
  
  Yes
  - Repair the DTC(s) in the FFCM.
  No
  - Go To 3
INSPECT THE FORWARD FACING CAMERA LENS
1. Inspect the FFCM for anything that would obstruct or interfere with the operation of the Camera Lens.
  - Dirt, mud, ice, snow or any debris that would obstruct the Camera Lens.
  - Damage to the FFCM, Camera Lens or mounting area that would prevent proper operation.
  Were any problems found?
  
  Yes
  - Repair as necessary. Erase the DTC(s) and verify proper operation of the ACC system.
  - Perform the ADAPTIVE CRUISE CONTROL VERIFICATION TEST. Refer to ADAPTIVE CRUISE CONTROL VERIFICATION TEST .
  No
  - Go To 4
CHECK RELATED WIRING AND HARNESS CONNECTIONS
1. Turn the ignition off.
2. Check the ACC Module and FFCM power supply and ground circuits.
3. Check the private CAN Bus circuits between the ACC Module and FFCM.
4. Disconnect the ACC and FFCM harness connector(s).
5. Disconnect all related in-line harness connections (if equipped).
6. Disconnect the related component harness connectors.
7. Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
  - Proper connector installation.
  - Damaged connector locks.
  - Corrosion.
  - Other signs of water intrusion.
  - Weather seal damage (if equipped).
  - Bent terminals.
  - Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
  - Terminals that have been pushed back into the connector cavity.
  - Perform a terminal drag test on each connector terminal to verify proper terminal tension.
  Repair any conditions that are found.
8. Reconnect all harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
9. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
10. Reconnect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
11. With the scan tool, erase DTCs.
12. Using the recorded information along with the When Monitored and Set Conditions above, operate the vehicle within the conditions that set the DTC.
13. With the scan tool, read ACC DTCs.
  Did the DTC return?
  
  Yes
  - Replace the ACC Module in accordance with the Service Information.
  - Perform the ADAPTIVE CRUISE CONTROL VERIFICATION TEST. Refer to ADAPTIVE CRUISE CONTROL VERIFICATION TEST .
  No
  - Perform the ADAPTIVE CRUISE CONTROL VERIFICATION TEST. Refer to ADAPTIVE CRUISE CONTROL VERIFICATION TEST .
  - Test complete.