Occupant Classification Sensor (OCS) System Reset

After Deployment 

1. Verify that all steps have been carried out as outlined in the Inspection and Repair After a Supplemental Restraint System (SRS) Deployment procedure.
2. NOTE: If RCM DTC B1193:00 is present, a new RCM must be installed before clearing OCSM DTC B1193:00. If a new RCM is not installed first, the OCSM DTC B1193:00 will not clear.

   Clear OCSM DTC B1193:00.

3. Proceed to Step 4 to carry out the System Reset  .

   No Deployment 

   NOTE: After installation of new OCS system components (seat track assembly or OCSM), the OCSM will have DTCs stored in memory. These DTCs clear after a successful System Reset.
4. Carry out the Restraints Control Module (RCM) self-test. If DTC B00A0:09 or B00A0:68 is retrieved on-demand, check the OCSM for DTCs.
   • If DTCs are retrieved on-demand in the OCSM and no new components have been installed, refer to the OCCUPANT CLASSIFICATION SYSTEM MODULE (OCSM) DTC CHART  for diagnostic direction.
   • If no DTCs are retrieved on-demand in the OCSM, clear the DTC from the RCM and carry out the System Reset.

   OCS System Reset 

5. Turn the ignition OFF.
6. WARNING: A Zero Seat Weight Test or System Reset must be performed at a seat temperature between 5 to 48°C (41 to 118°F), with nothing touching or on the seat, or in seat pockets. Failure to follow this instruction may result in incorrect operation of the occupant classification system (OCS) and increase the risk of serious personal injury or death in a crash.

   Prepare the passenger seat for a System Reset and make sure:

   • the OCS weight sensor bolt harness connections are correct for each sensor at the correct locations. Refer to SUPPLEMENTAL RESTRAINT SYSTEM for additional information. Refer to the appropriate illustration below for correct sensor location on the seat.
   • the seat wiring harnesses are routed and secured correctly and are not twisted, pinched, pulling down or pushing up on any seat component. Refer to Seat Wire Harness Routing in SEAT SYSTEM - SEATS .
   • all seat fasteners have been tightened to specification as identified in the service information. Refer to SEATING .
   • the seat track is correctly aligned (manual seat track) - check the seat track fastener hole alignment. Lift the seat adjust bar to align the holes in the track bracket to the holes in the floor.
   • the seat is correctly installed in the vehicle.
   • the passenger safety belt buckle is unbuckled.
   • the front passenger seat is empty and there is nothing underneath the seat. Remove any items from the seat that are not factory installed components.
   • the seat backrest is in the upright (vertical) position.
   • the seat is at the mid-point of the seat track travel.
   • the seat height is in its middle position (power seat only).
   • the hysteresis has been removed from the front passenger seat by firmly hitting the seat backrest 3 times.
   • the vehicle electrical system voltage is below 18 volts and above 11.5 volts  before continuing with the OCS Reset.
7. For vehicles built up to 7/30/2012, refer to the illustration with 4 weight sensors for sensor location and identification.
8. For vehicles built from 7/30/2012, refer to the illustration with 2 weight sensors for sensor location and identification.
9. Turn the ignition ON, wait 8 seconds.
10. Carry out the OCS Reset.
    • If the System Reset was successful, carry out the Occupant Classification System (OCS) Zero Seat Weight Test. Refer to OCCUPANT CLASSIFICATION SENSOR (OCS) SYSTEM ZERO SEAT WEIGHT TEST .
    • If the System Reset was unsuccessful, proceed to Step  8.
11. NOTE: Do not install any new OCS components at this time. Only install OCS components when directed to do so.

    Carry out the OCSM self-test.

    • If DTC B00A0:54 is retrieved on-demand, inspect all the items listed in Step  5 for causes of a unsuccessful System Reset and repair as necessary. Retest the system  .
    • If any other DTC is retrieved on-demand from the OCSM, refer to OCSM DTC CHART  for diagnostic direction.
12. If the System Reset was successful, carry out the Occupant Classification Sensor (OCS) System Zero Seat Weight Test .

    If the System Reset was unsuccessful, install a new passenger seat track assembly. Refer to SEATING .