Grand Caravan V6-3.3L VIN E Flex Fuel (2007)
Seat Sensor/Switch: Description and Operation
Description
DESCRIPTION
Figure 1 SEAT WEIGHT Bladder & Pressure Sensor
Vehicles equipped with the Occupant Classification System (OCS) have a seat weight bladder and pressure sensor unit (Figure 1) that is integral to the
passenger front seat cushion. The bladder is sandwiched between the seat cushion pan and seat cushion foam.
The bladder consists of two sheets of an elastomeric material and a molded plastic elbow fitting. The two sheets of material are sealed together around
their perimeter and heat staked to each other at numerous regular points within their field. The elbow fitting passes through a clearance hole in the seat
cushion pan. The bladder is then filled with a silicone fluid to become a pliable, quilted membrane.
Under the seat cushion a short tube is securely clamped at one end to the bladder nipple, and at the other end to a nipple on the electronic pressure
sensor. The sensor mounts on a clip attached to the seat cushion pan.
WARNING: These components are not replaceable separately from the seat cushion foam. When replaced as an assembly, the complete service
kit (seat cushion, bladder/sensor, OCM, and new wiring harness) MUST be used.
