With Manufacturer's Scan Tool
Erasing the DTC Memory with HDS1. Make sure the ignition switch is OFF.
2. Connect the HDS to the DLC (A).
3. Turn the ignition switch ON (II).
4. Select DTC CLEAR in the TEST MODE MENU of the HDS. This erases the DTC(s).
5. Turn the ignition switch OFF, and wait for 10 seconds.
6. Disconnect the HDS from the DLC.