Grand Cherokee 2WD V6-3.7L (2008)
Seat Sensor/Switch: Description and Operation
Description
DESCRIPTION
The driver side front seat belt switch for this vehicle is actually a Hall Effect-type sensor. This sensor consists of a fixed-position, Hall Effect Integrated
Circuit (IC) chip and a small permanent magnet that is integral to the front seat belt buckle. The front seat belt buckles are located on a molded plastic
scabbard and secured along with the seat belt tensioner mechanism by a nut to the inboard side of each front seat cushion frame. The driver side front
seat belt switch is connected to the vehicle electrical system through a two-lead pigtail wire and connector (1) on the front seat belt buckle-half, which is
connected to a wire harness connector and take out of the seat wire harness. A one kilohm diagnostic resistor is connected in parallel with the IC where
the two pigtail wire leads connect to the IC pins.
The driver side front seat belt switch cannot be adjusted or repaired and, if ineffective or damaged, the entire front seat belt buckle-half and tensioner
unit must be replaced.
