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 B58L Airbag Front End Discriminating Sensor - Left, and B58R Airbag Front End Discriminating Sensor - Right, 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 B58 Front Impact Sensors are generally located on the radiator core support. The B58L Airbag Front End Discriminating Sensor - Left, uses circuit 354 as the signal circuit and circuit 5045 as the low reference circuit. B58R Airbag Front End Discriminating Sensor - Right, uses circuit 1409 as the signal circuit and circuit 5600 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.