Checking The Component

HINT: Try connecting the connector for the non-functioning subwoofer to the other subwoofer. 

• Ignition off.
• Connect the functioning loudspeaker connector to the non-functioning loudspeaker.
• Ignition on.

  Check that there is sound from the loudspeakers for the Subwoofer module (SUB).

  Fig 1: Identifying Subwoofer Module (SUB) And Subwoofer

  Courtesy of VOLVO CARS CORPORATION

Is any noise produced from the connected subwoofer? 

• YES 

  Refer to REPLACING A COMPONENT 

• NO 

  Refer to REPLACING THE CONTROL MODULE