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.

Fig 1: Identifying Subwoofer Module (SUB) And Subwoofer

Courtesy of VOLVO CARS CORPORATION

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

Is any noise produced from the connected subwoofer? 

• YES 

  Refer to REPLACING A COMPONENT 

• NO 

  Refer to REPLACING THE CONTROL MODULE