Trunk Key Cylinder Switch Test

Open the trunk lid.
Disconnect the 2P connector from the trunk key cylinder switch.

Fig 1: Identifying Trunk Key Cylinder Switch Connector Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check for continuity between the terminals in each switch position according to the table.

Fig 2: Trunk Key Cylinder Switch Table
Courtesy of AMERICAN HONDA MOTOR CO., INC.
If the continuity is not as specified, replace the trunk key cylinder switch.