Deployment Outside Vehicle for Seat Belt Pretensioners
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 the following:
- Using the SIR diagnostics, it is determined that the seat belt pretensioner is malfunctioning.
- The seat belt pretensioner pigtail, if equipped, is damaged.
- The seat belt pretensioner connector is damaged.
- The seat belt pretensioner connector terminals are damaged.
In order to prevent accidental deployment and the risk of personal injury, do not dispose of an undeployed inflatable restraint seat belt pretensioner as normal shop waste. Undeployed seat belt pretensioners contain substances that could cause severe illness or personal injury if their sealed containers are damaged during disposal. Use the following deployment procedures to safely dispose of an undeployed seat belt pretensioner. Failure to observe the following disposal methods may be a violation of appropriate country, regional or local laws.
Deployment and disposal of a malfunctioning seat belt pretensioner is subject to any required retention period.
Special Tools
- J 38826 SIR Deployment Harness
- J 39401-B SIR Deployment Fixture
- An appropriate pigtail adaptor
Turn OFF the ignition.
- Remove the ignition key.
- Put on safety glasses.
- Remove the seat belt pretensioner from the vehicle. Refer to Seat Belt Buckle Pretensioner Replacement .
- When carrying a seat belt pretensioner to the deployment area, keep fingers clear of the seat belt webbing.
Clear a space on the ground about 1.85 m (6 ft) in diameter for deployment of the seat belt pretensioner. If possible, use a paved, outdoor location free of activity. Otherwise, use a space free of activity on the shop floor. Make sure you have sufficient ventilation.
- Make sure no loose or flammable objects are in the area.
- Place the J 39401-B SIR deployment fixture in the center of the cleared area.
- Fill the fixture plastic reservoir with water or sand.
Mount the seat belt pretensioner (1) in the SIR deployment fixture (3) with the open end facing up using the following mounting method.
- Adjust and secure the J 39401-B SIR deployment fixture arms (4) to the deployment fixture.
- To mount, use the proper size bolt (2) and nut (5) with washers in order to secure the seat belt pretensioner (1) to the deployment fixture brackets.
- Securely tighten all fasteners prior to deployment.
Inspect the J 38826 SIR deployment harness and the appropriate pigtail adapter for damage. Replace as needed.
- Short the 2 SIR deployment harness (1) leads together using 1 banana plug seated into the other.
- Connect the appropriate pigtail adapter (2) to the SIR deployment harness.
Extend the SIR deployment harness and adapter to full length from the deployment fixture.
- Connect the seat belt pretensioner connector (1) to the adapter (2) on the deployment harness (3).
- Clear the area of people.
Separate the 2 banana plugs on the SIR deployment harness.
Place a 12 volt minimum/2 amp minimum power source, such as a vehicle battery, near the shorted end of the harness.
- Connect the SIR deployment harness wires to the power source. Seat belt pretensioner deployment will occur when contact is made.
- Disconnect the SIR deployment harness from the power source after the seat belt pretensioner deploys.
Seat one banana plug into the other in order to short the deployment harness leads.
- If the seat pretensioner did not deploy, disconnect the adapter and discontinue the procedure. Contact the Technical Assistance Group. Otherwise, proceed to the following steps.
- Put on a pair of shop gloves.
- Disconnect the pigtail adapter from the seat belt pretensioner as soon as possible.
- Dispose of the deployed seat belt pretensioner through normal refuse channels.
- Wash hands with a mild soap.
When deploying a seat belt pretensioner, the rapid expansion of gas is very loud. Notify the people in the immediate area that a seat belt pretensioner will be deployed.