Switch For VOLVO On Call

Fig 1: Identifying Switches

Courtesy of VOLVO CARS CORPORATION

The switches for ON CALL and SOS are located in the instrument panel under the switch for the hazard warning signal flashers. The switches are only for the phone module (PHM) with the Volvo On Call functionality.

The switches are directly connected to the phone module (PHM).

Voltage supply and grounding of the switch lighting is via the phone module (PHM). The level of the light strength is adjusted using a pulse width modulated (PWM) signal.

There are diagnostics for the switches.