Lumbar Assembly

LUMBAR ASSEMBLY

Worldwide Diagnostic System (WDS):

Special Tool(s)

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 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. Cut the zip-tie and detach the lumbar assembly retainer clips.







12. Remove the 2 zip-ties at the top of the lumbar assembly and 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 rezeroing.
- The following precautions must be taken before rezeroing the OCS system:
- 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 rezeroing 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 rezeroing and nothing is placed on the seat during the rezeroing process.
- Make sure a minimum 8-second time period has passed after cycling the ignition switch ON before the rezeroing process.

NOTE:
- For best results in rezeroing, 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 rezero the OCS system is unsuccessful, a second attempt must be made.
- The ignition switch must be cycled after rezeroing the OCS system.

Rezero the occupant classification sensor.
- With the front passenger seat empty, use a diagnostic tool to trigger the active command and rezero the occupant classification sensor.

17. NOTE: The ignition switch must be cycled after rezeroing the OCS system.

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 diagnostic tool.