Hyundai Santa Fe (TM): SRSCM / Seat Belt Buckle Switch (BS). Description and operation

The SRSCM monitors the status of the driver and front passenger seat belt buckle. The SRSCM provides one pin each for the driver and front passenger seat belt buckle status input. The seat belt buckle circuit operates from internal boost voltage supplied by the SRSCM, and uses chassis ground for the signal return. The buckle status modify the SRSCM deployment. If the buckle status is unbuckled, the corresponding pretensioner will not be deactivated.