Power Mirror Switch Test/Replacement

Remove the driver's door switch trim (see FRONT DOOR PANEL REMOVAL/INSTALLATION ).
Disconnect the 13P connector (A) from the power mirror switch (B).

Fig 1: Identifying Power Mirror Switch 13P Connector Terminal
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check for continuity between the terminals in each switch position according to Fig 2.
Mirror Switch

Fig 2: Checking For Continuity Between Terminals In Each Switch Position (Mirror Switch)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Defogger Switch (Except '04 USA models)

Fig 3: Checking For Continuity Between Terminals In Each Switch Position (Defogger Switch (Except '04 USA Models))
Courtesy of AMERICAN HONDA MOTOR CO., INC.
If the continuity is not as specified, replace the power mirror switch.