2002-2004 models

Carefully pry the switch (A) out of the instrument panel.

Fig 1: Prying The Switch Out Of The Instrument Panel
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Disconnect the 8P connector (B) from the switch.
Check for continuity between the terminals in each switch position according to the table. If there is no continuity, replace the illumination bulbs (C) or the switch.

Fig 2: Checking For Continuity Between The Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.