Diagnostic Test

PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE 

1. Before diagnosing the DTC, perform the following checklist:
   • Verify that the Battery is fully charged and meets OEM specification.
   • With the scan tool, verify that the Battery voltage to the PCM matches the Battery voltage of the vehicle.
   • On DealerConnect, use the search tab to look for any of the following related to the DTC:
     • Service Bulletins
     • Star On-Line cases
     • Tech Tips
     • Recalls
     • RRTs
     • Technician Confirmed Repairs
   • Check the vehicle repair history for any recent repairs that may be related to the concern.
   • Check for DTCs in other modules that may cause a PCM related DTC to set.
   • Inspect the vehicle for any aftermarket accessories that may have been installed incorrectly.
   • Verify the vehicle build configuration meets OEM build specification.
   • Inspect related wiring and connectors for damage, looseness or contamination.

   Were any of the above conditions found?

   Yes 

   • Perform the appropriate repair procedure.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST  .

   No 

   • Perform the diagnostic test procedure related to the DTC and perform the appropriate diagnostic procedure. Refer to DIAGNOSTIC CODE INDEX .