40/41TE Automatic Transaxle (NGC)

P0613-INTERNAL TRANSMISSION PROCESSOR

For a complete wiring diagram Consult Diagrams/Electrical.

Theory of Operation

The internal watchdog is a separate hardware circuit which continuously monitors the microprocessor. To make sure the controller is operating properly, the watchdog must receive a signal from the microprocessor within a specific time window. After 10 seconds of vehicle operation and noted controller fault identification the transmission will be placed in limp-in and the MIL will illuminate.

- When Monitored:
After the ignition is turned to the run position and every 60 seconds thereafter.

- Set Condition:
Either of the following conditions occur 3 times in less than 590 milliseconds: The watchdog line remains high after the watchdog test or the transmission relay coil is energized and remains on after the watchdog delay expires.





Always perform the 40/41TE Pre-Diagnostic Troubleshooting procedure before proceeding. Testing and Inspection

Diagnostic Test

1. PCM - INTERNAL ERROR
View repair.

Repair

- Using the schematics as a guide, check the Powertrain Control Module (PCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. Check for Service Information Tune-ups or Service Bulletins for any possible causes that may apply. If no problems are found, replace and program the PCM. With the scan tool, perform Quick Learn.
- Perform 40/41TE VERIFICATION TEST 40/41TE Transmission Verification Test