Powertrain Control Module (PCM)
P0601-INTERNAL MEMORY CHECKSUM INVALID
For a complete wiring diagram refer to the Wiring Information Electrical Diagrams.
- When Monitored:
With the ignition on.
- Set Condition:
Internal checksum for software failed, does not match calculated value. One Trip Fault, Three Good Trips to clear.
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Pre-Diagnostic Troubleshooting Procedure.
POWERTRAIN CONTROL MODULE (PCM)
NOTE: Diagnose any CMP or CKP Sensor faults before continuing. Check for intermittent loose CMP or CKP connections.
The Powertrain Control Module is reporting internal errors, view repair to continue.
Repair
- Replace and program the Powertrain Control Module.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test