ECM Reset

How to Reset the ECM/PCM

You can reset the ECM/PCM in either of two ways:

NOTE: After resetting the ECM/PCM do the ECM/PCM idle learn procedure.

Reset the ECM/PCM with the OBD II scan tool or the HDS

1. Turn the ignition switch ON (II). Do not start the engine.
2. Use the OBD II scan tool or the HDS to reset the ECM/PCM.

NOTE: For the specific operations, refer to the user's manual that came with the OBD II scan tool or the HDS.

Reset the ECM/PCM by removing the fuse

1. Turn the ignition switch OFF.




2. Remove the No.6 ECU (ECM/PCM) (15A) 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. Turn the ignition switch OFF.
3. Disconnect the OBD II scan tool or the HDS 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. In order for the engine to start, you must rewrite the immobilizer code with the HDS.
- Do the idle learn procedure.