Seat Belt Pretensioners

TOOLS REQUIRED
^ J 38826 SIR Deployment Harness
^ An appropriate pigtail adapter

CAUTION:
^ In order to prevent accidental deployment of the pretensioner which could cause personal injury, do not dispose of an undeployed pretensioner as normal shop waste. The undeployed pretensioner contains substances that could cause severe illness or personal injury if the sealed container is damaged during disposal. Use the following deployment procedures to safely dispose of an undeployed pretensioner. Failure to dispose of a pretensioner as instructed may be a violation of federal state, or local laws.
^ When you are deploying a pretensioner for disposal, perform the deployment procedures in the order listed. Failure to follow the procedures in the order listed may result in personal injury.

Deploy the seat belt pretensioners outside of the vehicle when the vehicle will be returned to service. Situations that require deployment outside of the vehicle include:
^ Using the SIR diagnostics, you determine that the seat belt pretensioner does not function properly.
^ The seat belt pretensioner is scratched or damaged.
^ The seat belt pretensioner pigtail harness is damaged.
^ The seat belt pretensioner connector is damaged.
^ A seat belt pretensioner connector terminal is damaged.

Deployment and disposal of a malfunctioning seat belt pretensioner is subject to any required retention period.




1. Turn the ignition to the OFF position.
2. Remove the ignition key.
3. Put on safety glasses.
4. Inspect the J 38826 and the appropriate pigtail adapter for damage. Replace as needed.
5. Short the two SIR deployment harness (1) leads together using one banana plug seated into the other.
6. Connect the appropriate pigtail adapter (2) to the SIR deployment harness (1).

CAUTION: When you are carrying an undeployed seat belt pretensioner:
^ Do not carry the seat belt pretensioner by the wires or connector on the pretensioner.
^ Do not touch the seat belt pretensioner in the area of the cable (1).
^ Do not cover the tube opening with your hand.
^ Keep the open end of the tube pointed away from you. Do not point the open end of the tube at another person.
^ When the pretensioner deploys the cable retracts. This shortens the pretensioner between the buckle and the mounting bolt. Grasp the pretensioner by the piston tube (2).

Disregarding these precautions may result in personal injury or unnecessary SIR system repairs.




7. Remove the seat belt pretensioner from the vehicle.




8. Clear a space around a bench vice about 1.85 M (6 ft) in diameter for deployment of the seat belt pretensioner. Use a space free of activity. Make sure you have sufficient ventilation.
9. Make sure no loose or flammable objects are in the area.




10. Clamp the seat belt pretensioner, near the attachment bolt hole, in the vice.




11. Extend the SIR deployment harness and adapter to full length from the seat belt pretensioner.
12. Place a 12 V minimum/2 A minimum power source (i.e., vehicle battery) near the shorted end of the harness.




13. Connect the seat belt pretensioner (1) to the adapter (2) on the SIR deployment harness (3).
14. Firmly seat the adapter into the seat belt pretensioner connector.
15. Clear the area of people.

CAUTION: When you are deploying a pretensioner for disposal, perform the deployment procedures in the order listed. Failure to follow the procedures in the order listed may result in personal Injury.




16. Separate the two banana plugs on the SIR deployment harness.

IMPORTANT: The rapid gas expansion involved with deploying a pretensioner is very loud. Notify all the people in the immediate area that you intend to deploy the seat belt pretensioner.




17. Connect the SIR deployment harness wires to the power source.




18. Disconnect the SIR deployment harness from the power source after the pretensioner deploys.
19. Seat one banana plug into the other in order to short the deployment harness leads.
20. If the pretensioner did not deploy, disconnect the adapter and discontinue the procedure. Contact the Technical Assistance Group. Otherwise, proceed to the following steps.
21. Put on a pair of shop gloves.
22. Disconnect the pigtail adapter from the seat belt pretensioner as soon as possible.
23. Inspect the pigtail adapter and the SIR deployment harness.
24. Dispose of the deployed seat belt pretensioner through normal refuse channels.
25. Wash hands with a mild soap.