ECM Reset

How to Reset the ECM/PCM




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

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

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

NOTE: The ECM/PCM is part of the immobilizer system. If you replace the ECM/PCM, it will have a different immobilizer code. To start the engine, you must rewrite the immobilizer code with the HDS.