D601-Control Unit Software Code Missing Or Is Corrupt: Notes
For complete wiring diagrams, refer to SYSTEM WIRING DIAGRAMS article.
- When Monitored:
Ignition on, engine running.
- Set Condition:
When the PCM recognizes an internal failure with the software CODE missing or incorrect. One trip fault.
| Possible Causes |
|---|
| POWERTRAIN CONTROL MODULE |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.