Checking The Component And Wiring

Check the loudspeaker signal cable at control module connector A. Check for a short-circuit to supply voltage.

Check between:

• terminals #20 (#20) and #7 (#7)
• terminals #20 (#20) and #5 (#5).

Check the cable for the loudspeaker signal. Check for an open-circuit.

Take a reading between control module connector A terminal #20 (#20) and handset connector terminal #2 (#22).

Check the connectors for loose connections, damaged or bent terminal pins and oxidation.

Try replacing the carphone handset if no fault is found in the wiring.

Remedy as necessary.

Other information: 

• see SIGNAL SPECIFICATION
• see CONNECTING THE BREAKOUT BOX
• see LOCATION OF COMPONENTS
• see PHONE MODULE (PHM) (2011)
• see TELEPHONE HANDSET (2011)
• see CONTENTS

Fig 2: Identifying Connector A Terminals

Courtesy of VOLVO CARS CORPORATION

Fig 3: Identifying Ohms Display

Courtesy of VOLVO CARS CORPORATION

Fig 4: Identifying Handset Cradle

Courtesy of VOLVO CARS CORPORATION

Refer to VERIFICATION