Electrical equipment

Rear pyrotechnic retractor

~1min read

B84 or C84

Essential equipment

diagnostic tool

Tightening torques

pretensioner mounting bolt 2.1 daN.m
seat belt bracket mounting bolt 2.1 daN.m

The rear seat belts (at the side seating positions) are fitted with pyrotechnic retractors.

REMOVAL

IMPORTANT

Before removing any component of the safety system, lock the airbag control unit using the diagnostic tool. When this function is active, all firing circuits are inhibited and the airbag warning light on the instrument panel comes on steady (ignition on).

  • Remove the trim:
  • of the luggage compartment,
  • of the rear quarter panel.
Enrouleur pyrotechnique arrière
  • Remove the seat belt mounting bolt (1).
Enrouleur pyrotechnique arrière
  • Disconnect the connector.
  • Remove the pretensioner mounting bolt (2).
IMPORTANT

For disposal of an undeployed pretensioner, (see Airbags and Pretensioners chapter, Airbag and Pretensioner Control Unit, page 88C-39).

INSTALLATION

  • Refit in the reverse order of removal.
WARNING

After a pretensioner has deployed, certain parts must be replaced without fail (see Airbags and Pretensioners chapter, Airbag and Pretensioner Control Unit, page 88C-6).

  • Observe the routing and mounting points of the wiring under the seat.
  • Tighten to the following torques:
  • the pretensioner mounting bolt (2.1 daN.m),
  • the seat belt bracket mounting bolt (2.1 daN.m).
IMPORTANT

Check the airbag ECU using the diagnostic tool.

  • If everything is correct, unlock the airbag control unit; otherwise, refer to the diagnostic manual.

Test yourself

A quick Renault Megane quiz: every answer comes with an explanation and a link to the manual page.