Occupant Classification Module - Description

DESCRIPTION





The Occupant Classification Module (OCM) is secured with two screws to a molded plastic bracket on the passenger front seat adjuster beneath the seat cushion. Concealed within a hollow in the center of the molded plastic OCM housing is a microprocessor and the other electronic circuitry of the module. The module housing is sealed to enclose and protect the internal electronic circuitry.

Two mounting tabs and two connector receptacles are integral to the OCM housing. The connector receptacles contain terminal pins that connect the OCM to the vehicle electrical system through dedicated take outs and connectors of the passenger front seat wire harness.

The OCM and all of the other components of the Occupant Classification System (OCS) including the passenger seat, the flex mat, and the seat adjusters, cushion, back, frame, foam, springs, and wiring harness are a factory-calibrated and assembled unit. Any time any one of these components is removed or replaced for any reason, the OCM must be re-calibrated using a diagnostic scan tool, the Occupant Classification Seat Weight special tool, and the Occupant Classification System Verification Test. Refer to the appropriate diagnostic procedures.

The OCM cannot be adjusted or repaired and, if damaged or ineffective, it must be replaced. The OCM software is flash programmable. A non-calibrated OCM is available for separate service replacement.

WARNING: When replacing the OCM, the OCM Rezero procedure must be performed Service and Repair .