How to End a Troubleshooting Session

How to Reset the ECM




You can reset the ECM in either of two ways:

- Use the HDS or a scan tool to reset the ECM 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 (ECM) (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 as described above.
2. Do the ECM idle learn procedure.
3. Turn the ignition switch OFF.
4. Disconnect the HDS or a scan tool from the DLC.

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