Diagnostic Test

CHECK PCM FOR CHARGING SYSTEM DTC
1. With the scan tool, read PCM DTCs and record on the repair order.
  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
1. Start the Engine.
2. With the scan tool, read DTCs.
  Do any other modules display this type of 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 Module DTCs and record on the repair order.
  Is the DTC active?
  
  Yes
  - If no other modules are reporting any charging system or over 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 .
  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.