Driver Seat Belt Switch Input

the BCM determines when the driver's seat belt is fastened through the seat belt switch. The seat belt switch opens when the driver's seat belt is fastened. When the driver's seat belt is unfastened. the seat belt switch closes. This causes the switch to ground circuit 238. The seat belt switch receives ground through circuit 750. The BCM uses this input for the operation of the fasten belts indicator lamp and chime reminder.