Clearing Trouble Codes

1. After repair of the trouble areas, the diagnostic trouble code retained in the ECM memory must be cleared out by removing the EFI fuse (30 A) from R/B No.2 for 10 seconds or more, with the ignition switch OFF.

HINT:
- Cancellation can also be done by removing the battery negative (-) terminal, but in this case, other memory systems (clock, etc.) will also be cancelled out.
- If it is necessary to work on engine components requiring removal of the battery terminal, a check must first be made to see if a diagnostic trouble code has been recorded.

2. After cancellation, road test the vehicle to check that a normal code is now read on the malfunction indicator lamp.
- If the same diagnostic trouble code appears, it indicates that the trouble area has not been repaired thoroughly.