Pretensioners should only be replaced as a set.
Security measures
Do not use an ohmmeter to test the seat belt pretensioner. Never drop the seat belt pretensioner.
Removal
- Before removing the seat belt pretensioner, block all ignition circuits for pyrotechnic elements as follows:
- connect the portable diagnostic tool XR25 to the vehicle;
- turn on the ignition;
- set the ISO switch to position S8 and enter code D49;
- use the XR25 device to block the control unit and enter command G 80*. When this function is engaged, all ignition circuits are blocked, the airbag warning lamp in the instrument cluster and the left barograph 14 of the XR25 are illuminated (new control units are delivered in a locked state).
- wait two seconds until the control unit is automatically discharged.
- turn off the ignition.
- Remove the screw securing the seat belt pretensioner protection headset.
- Disconnect the connector.
- Unscrew the seat belt pretensioner bolt and remove it.
Installation
- Install the seat belt pretensioner and secure with the bolt, tightening it to the required torque.
- Connect the connector
- Install the seat belt pretensioner protection headset and secure it with the screw, tightening it to the required torque.
- Turn on the ignition.
- Use the XR25 to check for any faults in the security system. If everything is ok. unlock the computer using command G 81* Make sure that the left barograph 14 of the XR25 is not illuminated.
Pic. 13.64. Seat belt pretensioner: 1 - screw securing the seat belt pretensioner protection headset; 2 - seat belt pretensioner mounting bolt; 3 - seat belt pretensioner connector