Speaker Test/Replacement: Subwoofer

Remove the rear shelf (see TRIM REMOVAL/INSTALLATION - REAR SHELF AREA ).
Remove the four mounting bolts (A) from the subwoofer (B).

Fig 1: Mounting Bolts, 2P Connector And Subwoofer With Torque Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Disconnect the 2P connector (C), and remove the subwoofer.
Measure the resistance between the terminals No. 1 and No. 2. There should be about 2 Ω.
If the resistance is not as specified, replace the subwoofer.