Diagnostic Test

CHECK PCM FOR CHARGING SYSTEM DTCS
1. With the scan tool, read the PCM DTCs.
  Are there any charging system or battery DTCs set in the PCM?
  
  Yes
  - Repair the PCM DTC(s). Refer to DTC INDEX .
  No
  - Go To 2
CHECK OTHER MODULES FOR CHARGING SYSTEM DTCS
1. Start the Engine.
2. With the scan tool, read DTCs.
  Are there any other modules setting a charging system or battery related DTC?
  
  Yes
  - This is an indication of a charging/battery system malfunction. Check the battery/charging system in accordance with the Service Information. Refer to DIAGNOSIS AND TESTING .
  No
  - Go To 3
CHECK FOR AN ACTIVE DTC
1. With the scan tool, read ACC DTCs.
  Is the DTC active?
  
  Yes
  - If no other modules are reporting any charging system under voltage DTCs, replace and program 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
  - Go To 4
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.