LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Volvo >> 2007 >> C70 Automatic >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> Phone Module, Subwoofer Module, GPS Module, And Traffic Message Channel Module - Diagnostic Trouble Codes >> Sub-0023: Subwoofer. Shorted (2006-2007) >> Shorted >> Checking The Cable
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Checking The Cable

Fig 1: Identifying Ignition OFF
GLL101046Courtesy of VOLVO CARS CORPORATION
Fig 2: Identifying Connectors Disconnected
GLL101072Courtesy of VOLVO CARS CORPORATION

Check the cable terminals in the female and male sections of the connector. The cable terminals must not be damaged or pressed back.

Check the signal cable between the Subwoofer module (SUB) terminal #B5 and right-hand bass speaker terminal #2. Check for a short-circuit to supply voltage. Check for a short-circuit to ground.

Check the signal cable between the Subwoofer module (SUB) terminal #B12 and right-hand bass speaker terminal #1. Check for a short-circuit to supply voltage. Check for a short-circuit to ground.

Check the signal cable between the Subwoofer module (SUB) terminal #B3 and left-hand bass speaker terminal #2. Check for a short-circuit to supply voltage. Check for a short-circuit to ground.

Check the signal cable between the Subwoofer module (SUB) terminal #B9 and left-hand bass speaker terminal #1. Check for a short-circuit to supply voltage. Check for a short-circuit to ground.

Remedy as necessary.

Other information 

Fig 3: Identifying Subwoofer Module (SUB) And Subwoofer
GLL151310Courtesy of VOLVO CARS CORPORATION