Without Scan Tool
NOTE: The diagnostic trouble code will not be erased even if the negative battery terminal is disconnected.
1. Turn the ignition switch to "ON" position while holding the auto-cruise control switch in the "SET" (down) position.
2. Check to make sure the "CRUISE" light on the instrument panel is flashing.
3. Put the auto-cruise control switch in the "SET" (down) position. Depress the brake pedal and hold for five seconds or more. Release the brake pedal, auto-cruise control switch, then turn the ignition switch to "LOCK" (OFF) position. The DTC(s) are now erased.