Door Lock Knob Switch Test

Remove the driver's door panel (see FRONT DOOR PANEL REMOVAL/INSTALLATION ).
Disconnect the 3P connector (A) from the driver's door lock actuator (B).

Fig 1: Disconnecting 3P Connector From Driver's Door Lock Actuator And Connector Location
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check for continuity between the terminals in each switch position according to the table.

Fig 2: Switch Terminals Position Description Table
Courtesy of AMERICAN HONDA MOTOR CO., INC.
If the continuity is not as specified, replace the driver's door lock actuator.