Speaker Test/Replacement: Subwoofer

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2014 Honda Ridgeline, 2013 Honda Ridgeline, 2012 Honda Ridgeline, 2011 Honda Ridgeline, and 2010 Honda Ridgeline. However, it is still accessible from the selected car via links, so may be relevant.

Remove the rear panel insulator (see REAR PANEL INSULATOR REPLACEMENT ).
Disconnect the 2P connector (A). Remove the bolts (B) and the subwoofer (C).

Fig 1: Identifying 2P Connector, Bolts And Subwoofer
Courtesy of AMERICAN HONDA MOTOR CO., INC.
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.
Install the subwoofer in the reverse order of removal.