Front Parking Lamps

Fig 1: Front Parking Lamps Communication Diagram

Courtesy of VOLVO CARS OF NORTH AMERICA.

Parking lamps (10/11-12) light when:

• the knob in the light switch module (LSM) (3/111) is in the low beam position
• the knob in the light switch module (LSM) is in the parking lamp position
• low beam is lit via the low beam automatic function.

The lamp switch module (LSM) transmits data using serial communication to the central electronic module (CEM) (4/56) to activate the lamps.

The lamps are supplied with power via a relay which is activated by the central electronic module (CEM). The front parking lamps have a direct power supply.

The rear parking lamps and license plate lighting are powered by the rear electronic module (REM). For further information, see Design and Function, rear electronic module (REM).

There is a Limp Home function for the parking lamps so that they will work even if there is a fault in the control area network (CAN) or in the serial communication between the light switch module (LSM) and the central electronic module (CEM).