Switch Test/Replacement

Remove the heater control panel (see AIR MIX CONTROL CABLE REMOVAL/INSTALLATION ).
Disconnect the 5P connector (A), and remove the rear window defogger switch (B).

Fig 1: Identifying Rear Window Defogger Switch & 5P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check for continuity between the terminals in each switch position according to the table below.

Fig 2: Identifying Rear Window Defogger Switch Continuity Table
Courtesy of AMERICAN HONDA MOTOR CO., INC.
If the continuity is not as specified, remove the cover (A), and replace the switch (B) or bulb (C).

Fig 3: Identifying Switch & Cover With Bulb

Courtesy of AMERICAN HONDA MOTOR CO., INC.