How to End a Troubleshooting Session

How to Reset the ECM

You can reset the ECM in either of two ways:

NOTE: After resetting the ECM, do the ECM idle learn procedure.

Reset the ECM with an OBD II scan tool or the HDS

1. Turn the ignition switch ON (II). Do not start the engine.
2. Use an OBD II scan tool or HDS to clear the DTC.

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

Reset the ECM by removing the fuse

1. Turn the ignition switch OFF.




2. Remove the No. 25 BACK UP (7.5 A) fuse (A) from the under-dash fuse/relay box (B) for 60 seconds.

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

1. Reset the ECM as described above.
2. Turn the ignition switch OFF.
3. Disconnect an OBD II scan tool or HDS from the data link connector (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.
- Do the ECM idle learn procedure.