Without Scan Tool

CLEARING DIAGNOSTIC TROUBLE CODES
To clear Diagnostic Trouble Codes (DTCs) from the ECM's memory, either to determine if the malfunction will occur again or because the repair has been completed, the ECM power feed must be disconnected for at least 10 seconds.

DISCONNECTING ECM POWER
Fuse Method
To remove power from the ECM, remove the EFI F-HTR fuse located in the fuse and relay box in the engine compartment.

Battery Cable Method
Another way to remove power from the ECM is to disconnect the negative (-) battery cable. However, removal of the negative (-) battery cable will erase memory in the clock and/or radio, so removal of the EFI F-HTR fuse is preferred.

NOTICE: To prevent ECM damage, the ignition switch must be in the "LOCK" position when disconnecting or reconnecting ECM power.