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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 146 (Seat Belts) >> Diagnostic Information and Procedures >> DTC B1AD3 >> Circuit/System Description

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

Circuit Description
Control The output is PWM controlled.
Low Reference Grounded through the control module.
Component Description
A103 Roof Console Some buttons and indicators are hardwired, some functions use serial data communication.
K36 Restraints Control Module The control module monitors several sensors that can detect a collision. 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.