9-3 (9440) V6-2.8L Turbo (2008)
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Seat Belt Buckle Switch: Description and Operation
Belt Contact (70D/70P)
Location
Belt contact, driver (70D)
Belt contact, passenger (70P)
Main function
The purpose of the sensor is to determine if the seat-belt buckle is fastened or unfastened. Using information from the seat-belt buckle sensors and seat
position sensors, the airbag control module determines how the belt tensioner detonation circuits should be activated and activates the seat-belt warning
in the MIU and the SID.
Type
The seat-belt buckle sensors consist of a Hall sensor containing a circuit board and a magnet.
1. Hall sensor
