P0614

P0614-ECM/TCM INCOMPATIBLE

For a complete wiring diagram, refer to the Wiring Information.

Theory of Operation

The Transmission Control Module (TCM) performs various internal tests to verify proper controller operation. If the TCM detects that the variables that dictate the vehicle application are not present a DTC will set.

- When Monitored:
Continuously with the ignition on.

- Set Condition:
If the TCM detects that the Engine Control Module (ECM) software level is incompatible with the TCM software level.





Always perform the NAG1 Pre-Diagnostic Troubleshooting procedure before proceeding. NAG1 Pre-Diagnostic Troubleshooting Procedure.
CHECK IF TCM IS FLASHABLE
1. With the scan tool, record the vehicles TCM and PCM/ECM part numbers.
2. Verify the model year and make of both the TCM and ECM/PCM part numbers.
3. Flash and program the controller(s) with the correct software that corresponds with year and make of the vehicle.

Were you able to update (flash) the controller(s) successfully to the proper software levels?

Yes

- Test Complete.
- Perform the NAG1 TRANSMISSION VERIFICATION TEST. NAG1 Transmission Verification Test.

No

- Using the schematics as a guide, check the Transmission Control Module (TCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace and program the TCM.
- Perform the NAG1 TRANSMISSION VERIFICATION TEST. NAG1 Transmission Verification Test.