Diagnostic Test

WARNING: This page is about a different variant/trim than selected.

CHECK FOR ESM DIAGNOSTIC TROUBLE CODES (DTCS)
1. With the scan tool, read Electronic Shift Module (ESM) DTCs and record on the repair order.
  Are any ESM DTCs present?
  
  Yes
  - Repair ESMM DTCs. Refer to: Electronic Shift Module (ESM) - DIAGNOSTIC CODE INDEX .
  No
  - Go To 2
READ AND RECORD DTCS AND ENVIRONMENTAL DATA - ERASE DTCS AND CHECK FOR DTC TO RETURN
1. With the scan tool, read DTCs in all Electronic Control Units (ECU's) and record on the repair order.
2. With the scan tool, run a vehicle Scan Report, or record the Environmental Data related to the DTCs.
3. With the scan tool, erase all DTCs.
4. Turn the ignition off for a minimum of 10.0 seconds.
5. Turn the ignition on.
6. Using the recorded Environmental Data and the When Monitored Conditions above, operate the vehicle in the conditions that set the DTC.
7. With the scan tool, read DTCs.
Did the DTC return?

Yes
- Go To 3
No
- Perform the TESTING FOR AN INTERMITTENT CONDITION procedure. Refer to TESTING FOR AN INTERMITTENT CONDITION .
CHECK THE TRANSMISSION CONTROL MODULE (TCM) SOFTWARE
1. Check for any applicable Service Bulletins or software updates that are applicable.
  Were any applicable software updates available?
  
  Yes
  - With the scan tool, Program the TCM with the latest calibrations in accordance with the Service Information. Refer to: MODULE PROGRAMMING, 8P75PH .
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .
  No
  - Using the schematics as a guide, check the ESM terminals for corrosion, damage or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace the Shift Lever Assembly in accordance to the Service Information. Refer to MODULE, ELECTRONIC SHIFT (ESM), REMOVAL AND INSTALLATION .
  - Perform the TCM VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .