Sips Air Bag Module Assembly

WARNING: This page is about a different car, the 1996 Volvo 850. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: During servicing which involves front seats, always install safety device in SIPS bag of seat being serviced. Never apply external force to side of seat.

Removal

1) Lift up front edge of seat pocket and push backward. Remove SIPS Transport Safety Device (9156562-2) from holder inside seat pocket. See Fig 1. Attach safety device to sensor. See Fig 2. Ensure ignition is off and remove negative battery cable. Unbolt seat belt from outside of seat. Remove cover on front edge of outboard seat rail. Unbolt seat and then disconnect heating element electrical connector, under seat. Remove connector to seat belt buckle switch and then lift seat straight up.

2) Disconnect seat back from bottom by removing 3 screws on each side. Remove seat back angle adjustment knob. Remove lumbar-support adjustment knob by unscrewing counterclockwise. Turn knob until it stops. Continue to turn while pulling out firmly. Remove upholstery clamps with a strong cutter and then pull upholstery off seat.

3) Note routing of firing tubes, and cut cable ties. Remove SIPS module by unscrewing 2 Torx T-25 screws. Remove Torx T-25 screw that holds sensor pressure plate and sensor and then slide sensor out of tube sensor housing. Remove entire assembly from seat, being careful not to snag firing tubes on any part of seat frame.

Fig 1: Removing SIPS Safety Device

Courtesy of VOLVO CARS OF NORTH AMERICA

Fig 2: Removing SIPS Sensor & Air Bag Module

Courtesy of VOLVO CARS OF NORTH AMERICA

Installation

1) Verify transport safety device is in place on sensor unit. Position new sensor in tube sensor housing and then reinstall pressure plate. If making a collision repair, use a new plate. Install Torx screw. Install SIPS module on seat frame and tighten 2 Torx screws. If SIPS unit deployed, new screws of same type and quality should be used. Torque Torx screws to 24 INCH lbs. (2.9 N.m). Place firing tubes back in retaining clips and install new wire ties.

2) Reinstall upholstery in reverse of removal, using Hog Ring Pliers (1158962-9) to install clamps. If seat is being reupholstered, be sure to use Volvo original or Volvo approved upholstery. Operation of SIPS unit could be adversely affected otherwise.

3) Reassemble seat back to bottom. Reconnect all electrical connectors previously removed. Torque seat base bolts to 30 ft. lbs. (40 N.m). Torque seat belt bolt to 15 ft. lbs. (20 N.m.). Remove transport safety device from SIPS sensor and place back in holder. Reinstall seat pocket. Apply new SIPS sticker shipped with SIPS module. New sticker goes over old sticker on B-pillar decal.