U0300

U0300-INTERNAL CONTROL MODULE SOFTWARE INCOMPATIBILITY

For a complete wiring diagram, refer to the Wiring Information.

- When Monitored:
Ignition on and battery voltage greater than 10 volts.

- Set Condition:
The Powertrain Control Module (PCM) software is incorrect.





Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Pre-Diagnostic Troubleshooting Procedure.
PCM PROGRAMMED WITH INCORRECT SOFTWARE
1. Ignition on, engine not running.
2. Program the PCM. Powertrain Verification Test.
3. Start the engine.
4. Allow the engine to reach normal operating temperature.
5. With a scan tool, select read the active DTCs.

Does the scan tool display U0300-INTERNAL CONTROL MODULE SOFTWARE INCOMPATIBILITY?

Yes

- Replace and program the Powertrain Control Module (PCM). Powertrain Control Module - Programming.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test.

No

- The Powertrain Control Module (PCM) has been successfully programmed. Test is complete.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test.