Door Open Warning Lamp

Fig 1: Door Open Warning Lamp Input And Output Signals

Courtesy of VOLVO CARS CORPORATION

The door open warning lamp function is on cars from between structure weeks 199820 and 199950. The function utilizes the signal transmitted by the central electronic module (CEM) (4/56) on the controller area network (CAN) when a door is opened. The signal is received by the driver door module (DDM) and passenger door module (PDM). The door open warning lamp is then lit in the left (10/60) and right-hand (10/61) front doors. When the door is closed, the central electronic module (CEM) transmits a new signal on the controller area network (CAN). The signal is received by the driver door module (DDM) and passenger door module (PDM) which turns off the relevant door open warning lamp.