Circuit/System Description

The side object sensor modules are provided B+ and ground. The right side module has two grounds that distinguish it from the left side. Both modules are connected to serial data. The serial data line passes through the left module, therefore if the left module is disconnected, the right module will not be able to communicate. When an object is sensed by one of the sensors, it will supply voltage to the appropriate outside rearview mirror to illuminate the warning indicator. Ground is provided by the mirror through the door harness.

Side blind zone alert is active when the vehicle is out of park or the parking brake is off on manual transmission vehicles and from speeds of 10 km/h (6.2 MPH) up to 140 km/h (87 MPH). Driving faster deactivates the system, indicated by dimly lighting the warning symbols in the mirrors. Driving under this speed again will turn off the warning symbols. If then a vehicle is detected in the blind zone, the warning symbols will turn on normally on the appropriate side. When the vehicle is started, both outside mirror displays will briefly come on to indicate that the system is operating.