Without Scan Tool

CANCELLING DIAGNOSTIC CODE

EFI 15A Fuse Location:

1. After repair of the trouble area, the diagnostic code retained in memory by the ECU must be cancelled out 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.

NOTE:
- 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 the diagnostic code is not cancelled out, it will be retamed by the ECU and appear along with a new code in the event of future trouble.
- 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 code has been recorded.

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

DIAGNOSIS INDICATION

1. When 2 or more codes are indicated, the lowest number (code) will appear first.
However, no other code will appear along with code No.11.
2. All detected diagnostic codes, except code No.51, will be retained in memory by the ECU from the time of detection until cancelled out.
3. Once the malfunction is cleared, the check engine warning light on the instrument panel will go off but the diagnostic code(s) remain stored in ECU memory (except for code No.51).