The airbag sensor or crash sensor connection diagram in a car is shown below. The crash sensor is installed in front of the car because the collisions mostly happen there. The sensor is located within the engine & one more security sensor of the same design is located in the passenger location of the car. So it is required to indicate which airbag sensor you are seeking for locating it exactly because these sensors are generally situated in different positions all over a vehicle. Before locating an airbag sensor, better to verify the user manual of the sensor is the best method.

These sensors are simply connected to the airbag module through a wiring harness. An airbag system’s two other main components are the diagnostic module & the indicator lamp. So the diagnostic module is used to perform a system test every time the car is turned ON, and the indicator lamp is temporarily mounted on the dashboard to light up.