Circuit/System Description

WARNING: This page is about a different car, the 2016 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.

The pedestrian impact detection system senses and discriminates vehicle impacts and deploys the pedestrian hood hinge actuators in a timely manner to help reduce pedestrian head injuries. The Pedestrian Impact Detection Sensor provides discrete force information to the Pedestrian Impact Detection Control Module. The Pedestrian Impact Detection Control Module uses force information from the Pedestrian Impact Detection Sensors to determine those events when the deployment of the hood hinge actuator is expected. The pedestrian impact detection module provides a two wire current loop interface to the Pedestrian Impact Detection Sensors. This loop also powers the sensor. The Pedestrian Impact Detection Control Module monitors the Pedestrian Impact Detection Sensors for any system malfunction and when a malfunction is detected, a DTC will be stored in non volatile memory.

B82F Pedestrian Impact Detection Sensor - Upper Beam Front consists of two sensors connected together by a tube. If either sensor needs to be replaced they must be replaced as a complete assembly. Also verify there are no cracks or other damage to the front fascia or front bumper fascia energy absorber.