General Information

Component Location





General Description

Seat Belt Pretensioner (hereinafter referred to BPT) is located at both side of center pillar. BPT tightens seat belt before air bag deploys to protect passenger from bumping against crush pad, steering wheel and front window. In BPT, there are a ignition circuit and cylinder for rewinding belt. Cylinder has piston that can rewind seat belt in it. Gas chamber generates expansive force of gases to push piston in cylinder.

CAUTION: Never measure resistance of BPT directly, Current of measuring device may cause unexpected BPT deploy.

DTC Description

The SRSCM sets DTC B1368 if the measured resistance value of PBPT circuit is less than the threshold value.
*In this case, SRSCM checks if there's any fault in circuit by sending current for a while

DTC Detecting Condition





Specification





Schematic Diagram