Clearing Trouble Codes

EFI Fuse:

- After repair of the trouble area, the diagnostic code retained in memory by the Engine an ECT ECU must be canceled by removing the EFI fuse (15 A) for 10 seconds ( or more, depending on ambient temperature (the lower the temperature, the longer the fuse must be left out) with the ignition switch OFF.

ECU Connector:

HINT:
^ Cancellation can be also done by removing the battery negative (-) terminal, but in this case other memory systems will be also canceled out.
^ The diagnostic code can be also canceled out by disconnecting the Engine and ECT ECU connector.
^ If the diagnostic code is not canceled out, it will be retained by the Engine and ECT ECU and appear along with a new code in event of future trouble.

- After cancellation, perform a road test to confirm that a "normal code" is now read on the O/D OFF indicator light.