Seat Backrest - Front, With Seat Integrated Restraints (SIR)
SEAT BACKREST - FRONT, WITH SEAT INTEGRATED RESTRAINTS (SIR)Special Tool(s)
Special Tool(s):
Disassembly and Assembly
WARNING: Never probe the electrical connectors on safety belt buckle/retractor pretensioners or adaptive load limiting retractors. Failure to follow this instruction may result in the accidental deployment of the safety belt pretensioners or adaptive load limiting retractors, which increases the risk of serious personal injury or death.
CAUTION: It is necessary to carry out the occupant classification sensor (OCS) system reset when a front passenger seat cushion is disassembled, a new trim cover is installed or an OCS system service kit is installed. A scan tool is used to carry out the OCS system reset command. Failure to follow this instruction may result in system failure and the incorrect operation of the OCS system.
NOTE:
- The air bag warning indicator illuminates when the restraints control module (RCM) fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a supplemental restraint system (SRS) fault.
- The SRS must be fully operational and free of faults before releasing the vehicle to the customer.
- LH shown, RH similar.
All seats
1. Remove the seat.
2. Remove the seat backrest.
3. Push the 2 release tabs and remove the head restraint.
4. Remove the safety belt tower cover.
- Remove the 2 screw covers, 4 screws and safety belt tower cover.
5. Remove the screw and separate the safety belt guide.
6. Lift the backrest trim cover material and release the backrest J-clip.
7. CAUTION: Use care when separating the seat backrest trim cover from the hook-and-loop strip, or the hook-and-loop strip can be torn from the seat backrest foam.
Invert the backrest trim cover, separate the hook-and-loop fasteners and remove the hog rings on the front of the backrest foam pad.
8. If equipped with map pockets, remove the hog rings from the rear of the backrest.
9. NOTE:
- The inboard and outboard head restraint guides are not interchangeable.
- If necessary, install new head restraint guides.
Access and remove the 2 head restraint guides.
- Release the locking tabs and pull the head restraint guides out of the backrest frame tubes.
10. Remove the backrest trim cover.
Heated seat
11. Disconnect the backrest heater mat electrical connector.
12. CAUTION: If installing a new backrest foam pad, the heater mat cannot be reused. A new heater mat must be installed. Failure to follow this instruction can result in component or system failure.
NOTE: A new heater mat can be attached to a foam pad where an old heater mat was removed but a used heater mat should not be reattached to any foam pad.
To service the backrest heater mat, peel and remove from the backrest foam pad.
- If reusing the backrest foam pad, take precautions not to remove excess foam when peeling off the heater mat. If the foam pad is damaged, install a new foam pad and a new heater mat.
- For installation, align and lay the heater mat flat on the foam pad surface without any wrinkles and correctly tuck into the valley of the foam pad.
All seats
13. Remove the backrest foam pad.
14. Remove the bolt and the safety belt retractor.
- To install, tighten to 35 Nm (26 lb-ft).
15. Remove the bolt and the safety belt tower bracket.
- To install, tighten to 60 Nm (44 lb-ft).
16. Detach the lumbar assembly retainer clips.
17. Remove the lumbar assembly.
18. Remove the 2 backrest frame-to-recliner bolts and recliner.
- To install, tighten to 55 Nm (41 lb-ft).
19. Remove the recliner strut.
20. To assemble, reverse the disassembly procedure.
21. Install the seat. If a passenger seat has been serviced, do not prove out the SRS at this time.
Passenger seat
22. WARNING:
- Install a new occupant classification sensor (OCS) system service kit as a complete assembly. Never install only part of the kit components. Failure to follow this instruction may result in incorrect operation of the OCS system and increases the risk of serious personal injury or death in a crash.
- Make sure the front passenger seat repair is complete, the seat and all attached components (head restraint, seat side shield, etc.) are correctly assembled, and the seat is correctly installed to the vehicle before carrying out the System Reset. Failure to follow these instructions may result in incorrect operation of the occupant classification sensor (OCS) system and increases the risk of serious personal injury or death in a crash.
CAUTION:
- It is necessary to carry out the occupant classification sensor (OCS) system reset when a front passenger seat cushion is disassembled, a new trim cover is installed or an OCS system service kit is installed. A scan tool is used to carry out the OCS system reset command. Failure to follow this instruction may result in system failure and the incorrect operation of the OCS system.
- To prevent system failure, the following precautions must be taken before carrying out the occupant classification sensor (OCS) system reset.
- Make sure the voltage to the occupant classification system module (OCSM) is above 8.0 volts and less than 18.0 volts.
- Make sure the OCS system is not at a temperature below 6°C (42°F) or above 36°C (97°F) when initiating the OCS system reset process. If the vehicle has been exposed to extreme cold or hot temperatures, the vehicle must be exposed and kept at a temperature within the limits, 6°C to 36°C (42°F to 97°F) for a minimum of 30 minutes.
- Make sure nothing is present on the passenger seat before carrying out the OCS system reset and nothing is placed on the seat during the process.
- Make sure a minimum 8-second time period has passed after cycling the ignition switch ON before the carrying out the OCS system reset process.
NOTE: If the first attempt to carry out the OCS system reset is unsuccessful, a second attempt must made. If the second attempt to carry out the OCS system reset is unsuccessful, a new OCS system service kit must be installed.
Carry out the OCS system reset command using the scan tool.
23. Cycle the ignition switch from ON to OFF.
24. NOTE: The ignition switch must be cycled after the OCS system reset.
Cycle the ignition switch from OFF to ON.
All seats
25. Prove out the SRS as follows:
Turn the ignition key from ON to OFF. Wait 10 seconds, then turn the key back to ON and visually monitor the air bag warning indicator with the air bag modules installed. The air bag warning indicator will light continuously for approximately 6 seconds and then turn off. If an air bag SRS fault is present, the air bag warning indicator will:
- fail to light.
- remain lit continuously.
- flash at a 5Hz rate (RCM not configured).
The air bag warning indicator might not light until approximately 30 seconds after the ignition switch has been turned from the OFF to the ON position. This is the time required for the RCM to complete the testing of the SRS. If the air bag warning indicator is inoperative and a SRS fault exists, a chime will sound in a pattern of 5 sets of 5 beeps. If this occurs, the air bag warning indicator and any SRS fault discovered must be diagnosed and repaired.
Clear all continuous DTCs from the RCM using a scan tool.