Power Mirror Actuator Test

Remove the mirror mount cover (see POWER MIRROR REPLACEMENT ).
Disconnect the 8P connector (A) from the power mirror actuator (B).

Fig 1: Disconnecting 8P Connector From Power Mirror Actuator
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check actuator operation by connecting power and ground according to the table.

Fig 2: Terminal Reference Chart
Courtesy of AMERICAN HONDA MOTOR CO., INC.
If the mirror fails to work properly, replace the mirror actuator.
Defogger Test
Check for continuity between the No. 3 and No. 4 terminals of the 8P connector. There should be continuity. If there is no continuity, check for an open circuit.