Entering the self-diagnostic function (manual method)

Before doing the self-diagnostic function, make sure the No. 10 (7.5 A) fuse in the under-dash fuse/relay box and the No. 23 (10 A) fuse in the under-hood fuse/relay box are OK.

Push and hold the SEL/RESET button.
Turn the combination light switch (;003) ON.
Turn the ignition switch to ON (II).
Within 5 sec, turn the combination light switch (;D0;) OFF, then ON and OFF again.
Within 5 sec, release the SEL/RESET button, and then repeatedly push and release the button three times.

NOTE:

While in the self-diagnostic mode, the dashlights brightness controller operates normally.
While in the self-diagnostic mode, the SEL/RESET switch is used to start the Beeper Drive Circuit Test and the Gauge Drive Circuit Check.
If the vehicle speed exceeds 1 mph (2 km/h) or the ignition switch is turned to LOCK (0), the self-diagnostic mode ends.

Fig 1: Identifying Blinking Pattern (Self-Diagnostic Mode)

Courtesy of AMERICAN HONDA MOTOR CO., INC.