How to Erase Emission-Related Diagnostic Information

HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION

How to Erase DTC

With SDT

NOTE:
- If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once. Wait at least 10 seconds and then turn it ON (engine stopped) again.
- If the DTC is not for A/T related items, skip step 1.

1. Erase DTC in TCM. Refer to [OBD-II Diagnostic Trouble Code (DTC)]. OBD-II Diagnostic Trouble Code (DTC)
2. Select "Engine / Powertrain" with SDT.
3. Select "DTC check".
4. "Touch "Clear". (DTC in ECM will be erased.)

With GST

NOTE:
- If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF.once. Wait at least 10 seconds and then turn it ON (engine stopped) again.

1. Select Service $04 with GST (Generic Scan Tool).

No Tools

NOTE:
- If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once. Wait at least 10 seconds and then turn it ON (engine stopped) again.

1. Erase DTC in ECM. Refer to How To ERASE DIAGNOSTIC TEST MODE II (SELF-DIAGNOSTIC RESULTS).

NOTE:
- If the battery is disconnected, the emission-related diagnostic information will be cleared within 24 hours.
- The following data are cleared when the ECM memory is erased.
- Diagnostic trouble codes
- 1st trip diagnostic trouble codes
- Freeze frame data
- 1st trip freeze frame data
- System readiness test (SRT) codes
- Test values

- Actual work procedures are explained using a DTC as an example.Be careful so that not only the DTC, but all of the data listed above, are cleared from the ECM memory during work procedures.