Checking contact resistance, oxidation and wiring

Check handset connector D and carphone module connector A for loose connections according to Loose connections (terminals) .

Check the cable between carphone handset D6 (terminal #37) and carphone module terminal A14 (terminal #14) for an open-circuit according to Open-circuit, intermittent faults .

Check the cable between carphone module connector terminal A2 (terminal #2) and handset signal ground D5 (terminal #36) for an open-circuit according to Open-circuit, intermittent faults .

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

Remedy as necessary.

Other information: 

• To access and replace the handset, see Handset, replacing
• To access or replace the carphone module, see Phone module (PHM), replacing
• To connect the breakout box, see Connecting the breakout box. Carphone module
• For information about signals and connectors, see Signal description. Phone module (PHM) .

Fig 2: Identifying Handset Connector (D) Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 4: Identifying Connector (F) Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Refer to Information