AS68RC Automatic Transmission

P0613-INTERNAL TRANSMISSION PROCESSOR

For a complete wiring diagram refer to Diagrams/Electrical. Electrical Diagrams


Theory of Operation


The TCM performs several internal checks on the processor. The controller checks the Check Sum of the ROM, the Read/Write integrity of the RAM, and the Check Sum of the EEPROM.


- When Monitored:

Continuously with the Ignition on and the engine running.

- Set Condition:

TCM detects an error in the RAM, ROM, or EEPROM.







Always perform the AS68RC Pre-Diagnostic Troubleshooting procedure before proceeding. AS68RC Pre-Diagnostic Troubleshooting Procedure



Diagnostic Test


1. PCM - INTERNAL ERROR

Using the schematics as a guide, inspect the wiring and connectors. Repair as necessary. Pay particular attention to all power and ground circuits.

If there are no possible causes remaining, 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 AS68RC VERIFICATION TEST. Verification Tests