With GST

The emission related diagnostic information in the ECM can be erased by selecting Service $04 with GST.

NOTE: If the DTC is not for A/T related items (see "INDEX FOR DTC "), skip step 2.

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.
Perform HOW TO ERASE DIAGNOSTIC TROUBLE CODES (WITH GST) . (The DTC in TCM will be erased)
Select Service $04 with GST (Generic Scan Tool).

No Tools

NOTE: If the DTC is not for AT related items (see "INDEX FOR DTC "), skip step 2.

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.
Perform HOW TO ERASE DIAGNOSTIC TROUBLE CODES (NO TOOLS) . (The DTC in the TCM will be erased.)
Change the diagnostic test mode from Mode II to Mode I by depressing the accelerator pedal. Refer to "HOW TO SWITCH DIAGNOSTIC TEST MODE ".
- If the battery is disconnected, the emission-related diagnostic information will be lost 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.