Checking The Component And Wiring

Fig 1: Identifying Ignition OFF

GLL101045

Courtesy of VOLVO CARS CORPORATION

Ignition off
Disconnect connector A from the phone module (PHM)
Disconnect the connector for the Volvo On Call switch.
Check the cables at control module connector A for the internal microphone. Check for a short-circuit to ground.

Check between:
- terminals #15 (#15) and #14 (#14)
- terminals #15 (#15) and #13 (#13)
- terminals #15 (#15) and #6 (#6).
Try replacing the microphone if the cables are OK.

Remedy as necessary.

Other information:
- see SIGNAL SPECIFICATION
- see CONNECTING THE BREAKOUT BOX
- see LOCATION OF COMPONENTS
- see PHONE MODULE (PHM)
- see SWITCH VOLVO ON CALL
- see CONTENTS
Fig 2: Identifying Connector (F) Terminals
Courtesy of VOLVO CARS CORPORATION

Fig 3: Identifying Ohm Meter
Courtesy of VOLVO CARS CORPORATION

Fig 4: Identifying Phone Module (PHM) Connector
Courtesy of VOLVO CARS CORPORATION

Continue
Refer to VERIFICATION