FixVault

Diagnostic Test

  1. PCM PROGRAMMED WITH INCORRECT SOFTWARE 
    1. Ignition on, engine not running.
    2. Refer to PCM/ECM REPROGRAMMING - GAS and program the PCM in accordance with the Service Information.
    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 

      No 

      • The Powertrain Control Module (PCM) has been successfully programmed. Test is complete.
      • Refer to POWERTRAIN VERIFICATION TEST and perform the POWERTRAIN VERIFICATION TEST.