Without Scan Tool

Entering the self-diagnostic function
Before doing the self-diagnostic function, check the No. 7 (7.5 A) fuse and the No. 21 (7.5 A) fuse in the driver's under-dash fuse/relay box.

1. Push and hold the SELECT (Dash lights brightness control) button.
2. Turn the headlights ON.
3. Turn the ignition switch ON (II).
4. Within 5 sec, turn the headlights OFF (AUTO), then ON and OFF (AUTO) again.
5. Within 5 sec, release the SELECT button, and then push and release the button three times repeatedly.

NOTE:
- While in the self-diagnostic mode, the dash lights brightness controller operates normally.
- While in the self-diagnostic mode, the SELECT button is used to start the Beeper Drive Circuit Test and the Gauge Drive Circuit Check.
- If the vehicle speed exceeds 1.2 mph (2 km/h) or the ignition switch is turned OFF, the self-diagnostic mode ends.