Viper SRT-10 V10-8.4L (2008)
Air Bag: Description and Operation
Flex Mat
Description
DESCRIPTION
Vehicles equipped with the Occupant Classification System (OCS) have a Flex Mat (3) in the passenger seat. The flex mat is sandwiched between the
seat cushion springs and seat cushion foam. A heavy jute-like insulator pad is installed between the lower surface of the flex mat and the seat cushion
springs. The flex mat is secured to the seat cushion frame by two plastic push-in fasteners (1) at the front edge of the seat cushion frame. The seat
cushion foam is installed loosely over the top of the flex mat, then secured by the installation of the trim cover to the seat cushion. The flex mat is
connected to the Occupant Classification Module (OCM) by one electrical connector (2).
The bladder (4) consists of two rectangular sheets of an elastomeric material. The two sheets of material are sealed together around their perimeter and
heat staked to each other at numerous regular points within their field. Then the bladder is filled with a silicone fluid to become a pliable, quilted
membrane.
The flex sensor is flat membrane contained within a molded plastic sheet with an integral electrical connector receptacle. The flex sensor connector
contains terminal pins that connect the sensor to the vehicle electrical system and the OCM through a dedicated take out and connector of the passenger
seat wire harness.
The flex mat cannot be adjusted or repaired. If found faulty or damaged, then the entire flex mat assembly must be replaced.
WARNING: When replacing the flex mat, the OCM Rezero procedure must be performed See: Testing and Inspection/Programming and
Relearning.
Operation
OPERATION
The flex mat is designed to sense the relative weight of a load applied to the passenger seat cushion, which provides a logic input to the microprocessor
of the Occupant Classification Module (OCM).
When a load is applied to the seat cushion, it is measured by the pressure sensor under the seat cushion. As the pressure changes, the circuitry of the
