Seat Occupant Classification Module - Air Bag: Service and Repair

OCCUPANT CLASSIFICATION SYSTEM MODULE (OCSM)







Removal and Installation

WARNING: The occupant classification sensor (OCS) rails have a built-in strain gauge which may operate incorrectly if an OCS rail is dropped by itself, dropped after it is installed to the front passenger seat or dropped after it is installed to a front passenger seat track assembly. Use care when handling an OCS rail before or after it is installed to the front passenger seat or seat track assembly. Failure to follow these instructions may result in incorrect operation of the OCS system and increases the risk of serious personal injury or death in a crash.

NOTE:
- The air bag warning indicator illuminates when the restraints control module (RCM) fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a supplemental restraint system (SRS) fault.
- The SRS must be fully operational and free of faults before releasing the vehicle to the customer.
- Repair is made by installing a new part only. If the new part does not correct the condition, install the original part and perform the diagnostic procedure again.

1. Remove the passenger seat.

2. CAUTION: Make sure to remove all metal chips from the occupant classification system module (OCSM) and the surrounding areas after drilling out the rivets. Failure to follow this instruction may result in component damage and/or system failure.

Drill out the 2 occupant classification system module (OCSM) rivets.

3. Disconnect the electrical connector and remove the OCSM.
4. To install, reverse the removal procedure.
5. Install the passenger seat and repower the SRS.
Do not prove out the SRS at this time.

6. Carry out the appropriate procedure after installation of an occupant classification system module (OCSM) system component.
- If installing the original OCSM, carry out the Occupant Classification System (OCS) Zero Seat Weight Test and prove out the SRS. Occupant Classification Sensor (OCS) System Zero Seat Weight Test
- If installing a new OCSM, carry out the Occupant Classification Sensor (OCS) System Reset procedure and prove out the SRS. Programming and Relearning