Circuit/System Description

WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.

For an overview of the component/system, refer to: Supplemental Inflatable Restraint System Description and Operation

The B63LF Airbag Side Impact Sensor - Left Front Door, and B63RF Airbag Side Impact Sensor - Right Front Door, are sensors that detect acceleration and provide input to the K36 Restraints Control Module. The K36 Restraints Control Module monitors the inputs given by several sensors and when a collision is detected, the control module will trigger certain airbags and seat belt pretensioners, depending on the angle and severity of the impact. The B63 Side Impact Sensors are generally located inside the front doors, behind the interior door panel. The B63LF Airbag Side Impact Sensor - Left Front Door, uses circuit 2132 as the signal circuit and circuit 6628 as the low reference circuit. The B63RF Airbag Side Impact Sensor - Right Front Door, uses circuit 2134 as the signal circuit and circuit 6629 as the low reference circuit. The signal circuit on both impact sensors is the control module input and has an internal resistance connected to 5 V. The low reference circuit is grounded through the control module.