Engine Diagnostics - Gas

D600-THE CONTROL UNIT SOFTWARE CODE AND DATA DO NOT COMPLY

For a complete wiring diagram refer to Diagrams/Electrical.

- When Monitored:

Ignition on, engine running.

- Set Condition:

When the PCM recognizes an internal failure with the software CODE not complying with the software DATA. One trip fault.





Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.

Diagnostic Test

1. POWERTRAIN CONTROL MODULE

Check for any TSBs that may apply to this fault code.

Verify that the Powertrain Control Module is at the latest calibration level.

Check the Powertrain Control Module ground circuits with a test light connected to B+.

Check the Powertrain Control Module Fused B+ circuit with a test light connected to ground.

Check the Powertrain Control Module Main Relay circuits with a test light connected to ground.

Do the PCM power and ground circuits light the test light brightly.

Yes

- Replace and program the Powertrain Control Module.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test

No

- Repair the circuit for an open or shorted condition.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test