Speaker Test/Replacement: Subwoofer

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

Fig 1: Identifying 2P Connector Terminals And Subwoofer With Mounting Bolts
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Bolt Specifications: 6 x 1.0 mm, 9.4 N.m (0.95 kgf m, 6.9 lbf ft
Disconnect the 2P connector (B), 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