Circuit/System Description

The pedestrian impact detection system (PIDS) senses and discriminates vehicle impacts and deploys the pedestrian hood hinge actuators in a timely manner to protect vulnerable pedestrians. The discrimination sensor provides discrete force information to the pedestrian impact detection system (PIDS) module. The PIDS module uses vehicle acceleration information from the safing sensor and force information from the discrimination sensor to determine those events when the deployment of the hood hinge actuator is expected. The PIDS module provides a two wire current loop interface to the discrimination sensor. The PIDS module also provides power and ground to the discrimination sensor over two separate discrete circuits. The PIDS module monitors the discrimination sensor for any system malfunction and when a malfunction is detected, a DTC will be stored in non volatile memory.