| Description | This DTC indicates there are incompatible software levels within the powertrain control module (PCM) that control the electronic throttle control (ETC) monitor system. The ETC monitor system uses multiple microprocessors within the PCM, each having its own software level and function. The microprocessors must have the correct level of software in order to communicate and function together. | ||
|---|---|---|---|
| Possible Causes | |||
| Diagnostic Aids | Verify the PCM is at the latest calibration level. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Go to PINPOINT TEST QF . | ||
U0300 (PCM): INTERNAL CONTROL MODULE SOFTWARE INCOMPATIBILITY