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 F113D Seat Belt Anchor Plate Tensioner - Driver and F113P Seat Belt Anchor Plate Tensioner - Passenger are pyrotechnic units that contain an ignitor, which, when supplied with voltage, ignites the propellant in the gas generator. The F113 Seat Belt Anchor Plate Tensioners are respectively located on the driver and passenger center pillars. The deployment loop has a high control circuit that will supply voltage to deploy the pretensioner and a low control that will supply ground to deploy the pretensioner. The F113D Seat Belt Anchor Plate Tensioner - Driver uses circuit 3481 as high control and circuit 3482 as low control. The F113P Seat Belt Anchor Plate Tensioner - Passenger uses circuit 3479 as high control and circuit 3480 as low control. Based on inputs from the impact sensors, the K36 Restraints Control Module will command deployment of the F113 Seat Belt Anchor Plate Tensioners by simultaneously applying voltage to the high control circuit, and ground to the low control circuit