Seat Cushion - Front
SEAT CUSHION - FRONTSpecial Tool(s)
Special Tool(s):
Front Seat Cushion - Driver (Part 1):
Front Seat Cushion - Driver (Part 2):
Front Seat Cushion - Passenger (Part 1):
Front Seat Cushion - Passenger (Part 2):
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.
- Do not install a new heater mat on a front passenger seat cushion. If a new cushion heater mat is needed on the front passenger seat, an occupant classification sensor (OCS) system service kit equipped with a heater mat must be installed. Failure to follow this instruction may result in incorrect operation of the OCS system.
NOTE:
- Occupant classification sensor (OCS) system components (seat wiring harness, seat cushion frame, seat cushion foam pad, bladder with pressure sensor and occupant classification system module [OCSM]) are calibrated to each other and are serviced as an assembly. The OCS system components are not to be installed separately. If a new OCS system, OCS system component or seat cushion foam pad are needed, an OCS system service kit (seat cushion frame, seat cushion foam pad, bladder with pressure sensor, seat wiring harness and OCSM) must be installed as an assembly.
- To identify between a production OCS system and a OCS system service kit, inspect the OCSM electrical connector.
A production OCS system allows the disconnection of the OCSM electrical connector.
An OCS system service kit has the electrical connector glued to the OCSM, it cannot and should not be disconnected or altered.
- When installing a new OCS system service kit, refer to Air Bag Systems for the OCS removal and installation procedure.
- 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.
- For vehicles with power seats, position the seat cushion to its lowest position before disconnecting the power seat.
- Power seat shown, manual seat similar.
All seats
1. Remove the seat.
2. If equipped, disconnect the seat control switch electrical connector.
3. NOTE: To aid cushion removal, position the backrest rearward before removing the recliner handle.
Remove the recliner handle.
- Release the clip at the rear of side shield by detaching the clip from the metal bracket on the track. Partially flex the side shield at the rear to obtain access to the recliner handle clip. Remove the recliner handle clip (removed for clarity) and the recliner handle.
4. If equipped, adjust the lumbar until fully relaxed and remove the lumbar adjust knob.
5. If equipped, remove the seat control switch knob.
6. Remove the side shield control panel.
7. If equipped, disconnect the memory SET switch electrical connector.
8. Release the pin-type retainer at the front of the side shield.
9. Remove the 3 screws and side shield.
10. CAUTION: To prevent component damage and avoid setting diagnostic trouble codes (DTCs), the following precautions must be taken:
- The position assurance locking wedge must be in the released position when inserting or removing the electrical connector from the safety belt buckle and pretensioner.
- Do not install the electrical connector by pushing on the position assurance locking wedge.
- Make sure the electrical connector and position assurance locking wedge are fully seated after connecting to the safety belt buckle and pretensioner.
Release the position assurance locking wedge on the safety belt buckle and pretensioner electrical connector.
11. NOTE: If equipped with manual lumbar, make sure the wire harness is routed above the manual lumbar cable.
Disconnect the safety belt buckle and pretensioner electrical connector.
12. Disconnect the safety belt buckle switch electrical connector.
13. Remove the nut and the safety belt buckle and pretensioner.
- To install, tighten to 55 Nm (41 lb-ft).
- The anti-rotation tab must be correctly aligned for correct installation.
- When installing, pull the safety belt buckle through the anti-rattle strap located on the side of the seat.
14. If equipped, disconnect the backrest heater mat electrical connector.
15. If equipped with seat integrated restraints (SIR), remove the safety belt anchor nut.
- To install, tighten to 55 Nm (41 lb-ft).
- If passenger seat, disconnect the belt tension sensor (BTS) electrical connector.
16. If equipped, disconnect the power seat track electrical connector and release any pin-type retainers attached to the seat cushion frame.
17. If equipped, disconnect the 3 memory seat position sensor electrical connectors (one shown) and detach the wiring harness from the cushion frame.
18. If equipped with manual lumbar, release the rear inboard cushion trim cover J-clip and note the lumbar cable routing for installation.
19. Remove 4 nuts and cushion frame.
- To install, tighten to 25 Nm (18 lb-ft).
- Disconnect and detach all remaining electrical connectors and pin-type retainers attached to the seat cushion frame.
Passenger seats
20. For disassembly of the passenger seat cushion assembly (cushion trim cover, foam pad, OCS bladder with pressure sensor, OCSM and cushion frame), refer to the Occupant Classification Sensor removal and installation procedure in Air Bag Systems.
Driver seats
21. Release the cushion trim cover J-clips.
22. Remove the hog rings and the cushion trim cover.
23. Remove the hog rings and cushion foam pad from the seat cushion frame.
24. CAUTION: If installing a new cushion 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 cushion heater mat, peel and remove the cushion heater mat from the cushion foam pad.
- If reusing the cushion 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
25. To assemble, reverse the disassembly procedure.
- Make sure the safety belts and buckles are accessible to the occupants after installation.
- Verify the safety belt retractor operates without excessive effort or binding.
26. Install the seat. If a passenger seat has been serviced, do not prove out the SRS at this time.
Passenger seat
27. 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:
- To prevent system failure, it is necessary to carry out the occupant classification sensor (OCS) system reset of the OCS system when a front passenger seat cushion is disassembled, a new trim cover installed or an OCS system service kit is installed. A scan tool is used to trigger the command to carry out the OCS system reset.
- 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 be 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.
28. Cycle the ignition switch from ON to OFF.
29. NOTE: The ignition switch must be cycled after the OCS system reset.
Cycle the ignition switch from OFF to ON.
All seats
30. 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.