Lumbar Assembly

LUMBAR ASSEMBLY

Special Tool(s):

Special Tool(s)

Front Seat Backrest - With Seat Integrated Restraints (SIR):

Front Seat Backrest - Without Seat Integrated Restraints (SIR):

Front Seat Cushion - Driver (Part 1):

Front Seat Cushion - Driver (Part 2):

Front Seat Cushion - Passenger (Part 1):

Front Seat Cushion - Passenger (Part 2):

Exploded View

Removal and Installation

WARNING:
- The safety belt pretensioner is a pyrotechnic device. Always wear safety glasses when repairing an air bag equipped vehicle and when handling a safety belt buckle pretensioner or safety belt retractor pretensioner. Never probe a pretensioner electrical connector. Doing so could result in pretensioner or air bag deployment and could result in personal injury.
- To reduce the risk of personal injury, do not use any memory saver devices.

NOTE:
- If a seat equipped with a supplemental restraints system (SRS) component is being serviced, SRS must be depowered.
- The air bag warning lamp 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.
- Driver seat shown, passenger seat similar.

All seats
1. Remove the front seat and depower the SRS.
2. Remove the front seat backrest.







3. Push the 2 release tabs and remove the head restraint.

Seats with seat integrated restraints (SIR)
4. Remove the safety belt tower cover.
- Remove the 2 covers, 4 screws and the safety belt tower cover.

All seats







5. Lift the material and release the backrest J-clip.







6. CAUTION: Use care when separating the seat upholstery from the hook-and-loop strip, or the hook-and-loop strip can be torn from the seat backrest foam pad.

Separate the hook-and-loop fasteners and remove the hog rings on the front of backrest foam pad.

Seats with map pockets







7. Remove the hog rings on the back side of backrest cushion.

All seats







8. NOTE:
- The inboard and outboard head restraint sleeves are not interchangeable.
- If necessary, install new head restraint sleeves.

Access and push the release tab and pull the head restraint sleeve out of the backrest frame tube.

9. Remove the backrest trim cover.
10. Disconnect the backrest heater element (if equipped) and remove the backrest foam pad.







11. Detach the lumbar assembly retainer clips.







12. Remove the lumbar assembly.
13. To install, reverse the removal procedure.
14. Install the front seat backrest.
15. Install the front seat and repower the SRS. Do not prove the SRS at this time.

Passenger seat

16. CAUTION:
- Make sure the seat is completely assembled before carrying out the OCS system reset active command.
- The following precautions must be taken before carrying out the OCS system reset:
- Make sure the OCS system components are connected and no faults are present.
- Make sure the OCS system is not at a temperature below 0°C (32°F) or above 45°C (113°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, 0°C to 45°C (32°F to 113°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 reset process.
- Make sure a minimum 8-second time period has passed after cycling the ignition switch ON before carrying out the OCS system reset process.

NOTE:
- For best results, the OCS system should be at or near room temperature, 10°C to 29°C (50°F to 85°F).
- If the first attempt to carry out the OCS system reset is unsuccessful, a second attempt must be made.
- The ignition switch must be cycled after carrying out the OCS system reset.

Carry out the occupant classification sensor (OCS) system reset.
- With the front passenger seat empty, use a scan tool to trigger the active command and reset the OCS system.

17. NOTE: The ignition switch must be cycled after carrying out the OCS system reset.

Cycle the ignition switch from ON to OFF.

All seats
18. Prove out the supplemental restraint system (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 indicator with the air bag modules installed. The air bag indicator will light continuously for approximately 6 seconds and then turn OFF. If an air bag supplemental restraint system (SRS) fault is present, the air bag indicator will:
- fail to light.
- remain lit continuously.
- flash.

The flashing might not occur 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 restraints control module (RCM) to complete the testing of the SRS. If the air bag 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 indicator and any SRS fault discovered must be diagnosed and repaired.

Clear all continuous DTCs from the restraints control module using a scan tool.