ECM Reset

How to Reset the PCM




You can reset the PCM in either of 2 ways:
- Use the HDS or a scan tool to reset the PCM's memory.
See the HDS or a scan tool user's manuals for specific instructions.
- Turn the ignition switch OFF, and remove the No.6 ECU (PCM) (15A) fuse (A) from the under-hood fuse/relay box (B) for 10 seconds.

NOTE: If the low fuel indicator is blinking, the PCM can not be reset with the HDS or a scan tool. To reset the PCM, do the low fuel indicator troubleshooting.

How to End a Troubleshooting Session (required after any troubleshooting)

1. Reset the PCM as described above.
2. Do the PCM idle learn procedure.
3. Turn the ignition switch OFF.
4. Disconnect the HDS or a scan tool from the DLC.

NOTE: The PCM is part of the immobilizer system. If you replace the PCM, it will have a different immobilizer code. In order for the engine to start, you must rewrite the immobilizer code with the HDS.