Diagnostic Test

CHECK IF DTC IS CURRENT
1. Using the scan tool, read EVCU DTCs.
2. Record the Environmental Data and any DTCs.
3. Clear DTCs.
4. Using the recorded Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
5. Read EVCU DTCs.
  Did the DTC reset?
  
  Yes
  - Using the schematics as a guide, check the Electronic Shift Module (ESM) 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 the ESM in accordance with the Service Information. Refer to MODULE, ELECTRONIC SHIFTER (ESM), REMOVAL .
  - Perform the EVCU VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to STANDARD PROCEDURE .