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Occupant Classification Sensor (OCS) System Reset




Occupant Classification Sensor (OCS) System Reset





WARNING: The following precautions must be taken before carrying out the following procedure on the front passenger seat:
- Park the vehicle on level ground.
- Make sure the occupant classification system (OCS) is stabilized at a temperature in the range of 5°C to 48°C (41°F to 118°F) and is not exposed to temperatures outside that range.
- Make sure the front passenger seat is empty and dry.
- Make sure the front passenger seat repair is complete and all attached components (head restraint, seat side shield) are correctly installed.
- Make sure nothing is placed in the map pockets (if equipped) of the front passenger seat.
- Make sure nothing is underneath the front passenger seat.
- Make sure no non-factory installed items (seat covers, DVD screens) are on or contacting the front passenger seat. If any non-factory items were installed to the seat, remove the item(s) and communicate to the customer that any alteration/modification to the front passenger seat may affect performance of the OCS. Refer to the Owner's Literature.
- Make sure the seat is correctly installed in the vehicle.
Failure to follow these instructions may result in incorrect operation of the OCS and increases the risk of serious personal injury or death in a crash.

After Deployment

NOTE: After installation of new Occupant Classification System (OCS) system components and completion of Inspection and Repair After a Supplemental Restraint System (SRS) Deployment Inspection and Repair After a Supplemental Restraint System (SRS) Deployment, the Occupant Classification System Module (OCSM) will have DTCs stored in memory. These DTCs will clear after a successful System Reset.

1. Check that all steps have been carried out as outlined in the Inspection and Repair After a Supplemental Restraint System (SRS) Deployment Inspection and Repair After a Supplemental Restraint System (SRS) Deployment procedure.

2. If no concerns are found, proceed to Step 4 to carry out the System Reset.

No Deployment

NOTE: After installation of new OCS (Occupant Classification System) system components (OCS (Occupant Classification System) weight sensor bolt(s), seat track assembly or OCSM (Occupant Classification System Module)), the OCSM (Occupant Classification System Module) will have DTCs stored in memory. These DTCs will clear after a successful System Reset.

3. Carry out the Restraints Control Module (RCM) self-test. If DTC B2290 is retrieved on-demand, check the OCSM (Occupant Classification System Module) for DTCs.
- If DTCs are retrieved on-demand in the OCSM (Occupant Classification System Module) andNO new components have been installed, refer to the Occupant Classification System Module (OCSM) DTC Chart for diagnostic direction Air Bag Systems.

- If no DTCs are retrieved on-demand in the OCSM (Occupant Classification System Module), CLEAR the DTC from the RCM (Restraints Control Module) and carry out the System Reset.


OCS (Occupant Classification System) System Reset

4. Turn the ignition to the OFF position.

5. Prepare the passenger seat for a System Reset and make sure:
- the OCS (Occupant Classification System) weight sensor bolt harness connections are correct for each sensor at the correct locations. Refer to Wiring Diagram Set 46 for schematic and connector information [1][2]Diagrams By Number. Refer to the illustration 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 Seats.

- all seat fasteners have been tightened to specification as identified in the diagnostic/repair information.

- the seat track is correctly aligned (manual seat track).

- 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 were not factory installed and make sure that the seat is correctly installed in the vehicle.

- 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 (Occupant Classification System) System Reset.






6. Turn the ignition ON,Wait 8 seconds.

7. Carry out the OCS (Occupant Classification System) System 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 Occupant Classification Sensor (OCS) System Zero Seat Weight Test.

- If the System Reset was unsuccessful, proceed to Step 8.


8. NOTE: Do not install any new OCS (Occupant Classification System) system components at this time. OCS (Occupant Classification System) system components should only be installed when directed to do so.

Carry out the OCSM (Occupant Classification System Module) self-test.

- If DTC B00A0:54 is retrieved on-demand, refer to the DTC Charts for diagnostic direction of this DTC Air Bag Systems.

- If any other DTC are retrieved on-demand from the OCSM (Occupant Classification System Module), proceed to Step 9.


9. Inspect all the items listed inStep 5 for causes of a unsuccessful System Reset, repair as necessary. Retest the system.

10. If the System Reset was successful, carry out the Occupant Classification Sensor (OCS) System Zero Seat Weight Test Occupant Classification Sensor (OCS) System Zero Seat Weight Test. If the System Reset was unsuccessful, install a new passenger seat track assembly.
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