Blind spot information system (BLIS)
The cameras take 30 images a second and compare each image with the previous one to check whether any changes have taken place. To be able to determine whether a change is of any significance when moving sideways, the camera module also has to know the vehicle's speed. To calculate the vehicle's speed and know whether the vehicle is turning, the speed signals for the respective rear wheels from the brake control module (BCM) are used. The central electronic module (CEM) (4/56) receives information from the brake control module (BCM) (4/16) via the CAN network on the respective speeds of the two rear wheels. These two signals are then passed on to the left camera module (LCM) and right camera module (RCM) respectively via serial communication.
If the camera module discovers that there is something in the dead angle, an orange LED, located on the inside of the panel at the front of the window on the door, comes on. This LED is directly connected to the respective camera module.
The blind spot information system (BLIS) can be deactivated using one of the switches on the dashboard environment panel. When this switch is depressed, a signal is transmitted from the climate control module (CCM) to the central electronic module (CEM) via the CAN network. The system is then deactivated until the switch is depressed again or the next time the vehicle is started.
If a fault is detected by the central electronic module (CEM), a diagnostic trouble code (DTC) is stored and a signal is transmitted via the CAN network to the driver information module (DIM), which turns on a general warning lamp and displays a text message.