Seat Cushion - Front, Bucket and 40 Percent
SEAT CUSHION - FRONT, BUCKET AND 40 PERCENTSpecial Tool(s):
Special Tool(s)
Seat Cushion, Driver (Part 1):
Seat Cushion, Driver (Part 2):
Seat Cushion, Front Passenger (Part 1):
Seat Cushion, Front Passenger (Part 2):
Disassembly
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.
CAUTION: It is necessary to carry out the 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.
NOTE:
- Occupant classification sensor (OCS) system components (seat cushion foam pad, bladder with pressure sensor and OCS module) 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, a new OCS system service kit (seat cushion foam pad, bladder with pressure sensor, OCS module and seat wiring harness) must be installed as an assembly.
- To identify between a production OCS system and a service OCS system (OCS service kit) inspect the OCS module electrical connector. A production OCS system allows the disconnect of the OCS module electrical connector. A service OCS system (OCS service kit) has the OCS module electrical connector glued to the OCS module. It cannot and should not be disconnected or altered.
- If a seat equipped with a supplemental restraint system (SRS) component is being serviced, the 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 SRS fault.
- The SRS must be fully operational and free of faults before releasing the vehicle to the customer.
- When installing a new OCS service kit, refer to Air Bag Systems for the OCS removal and installation procedure.
All seats
1. Depower the supplemental restraint system (SRS).
2. Remove the front seat.
3. Remove the front seat backrest.
4. Release the trim cover rear J-clip from the seat cushion.
Passenger seat
5. NOTE: Note position of wire routing for installation.
Release the seat wiring harness retainer clip and detach the seat wiring harness connector from the seat cushion frame.
All seats
6. Remove the 4 seat track-to-cushion frame bolts and remove the seat track assembly from the cushion frame.
Driver seat
7. Remove the 2 screws and seat position sensor from the seat track assembly.
All seats
8. NOTE: Note routing of the seat back latch release cable through the seat cushion frame.
Detach the pin-type retainer and remove the backrest latch release cable.
9. Release the remaining trim cover J-clips
- If driver seat, remove the cushion frame from the foam pad and trim cover.
10. CAUTION: An OCS service kit Will have the OCS bladder attached to the seat cushion foam pad. Do not separate the OCS bladder from the seat cushion foam pad.
Remove all rows of hog rings and remove the cushion trim cover.
11. NOTE: Note position of wire routing for installation.
Release the 2 seat wiring harness routing clip from the seat cushion frame.
12. Release the pressure sensor bracket retainer and slide the pressure sensor off the bracket.
13. Remove the occupant classification sensor (OCS) module.
1. Remove the 2 screws from the OCS module
2. Release the OCS module bracket retainer and slide the OCS module off the bracket.
14. CAUTION: A production OCS bladder is shown. An OCS service kit will have the OCS bladder attached to the seat cushion foam pad. Do not separate the OCS bladder from the seat cushion foam pad.
Release the 3 OCS bladder pin-type retainers from the seat cushion frame.
15. NOTE: Note position of wire routing for installation.
Route the OCS bladder hose and pressure sensor, OCS module and seat wiring harness out through the seat cushion frame opening.
Assembly
Passenger seat
1. WARNING: Do not separate components.
CAUTION:
- Inspect the occupant classification sensor assembly, seat cushion frame and support assembly for any foreign objects, before installing the occupant classification sensor assembly to the seat cushion frame. If any foreign objects are found, remove them. Failure to do so may result in personal injury, in the event of an air bag deployment.
- Failure to route the seat occupant sensor components through the correct seat cushion support opening can cause component failure.
- While positioning the seat cushion frame and occupant classification sensor assembly, be careful not to damage any of the components. Failure to do so can result in component failure.
NOTE: If the original equipment occupant classification sensor (OCS) is not being installed, install a service kit OCS using all parts in the kit.
Position the OCS to the seat cushion frame.
- Route the OCS bladder hose and pressure sensor, OCS module and seat wiring harness through the seat cushion frame opening.
2. CAUTION: An OCS service kit will have the OCS bladder attached to the seat cushion foam pad. Do not separate the OCS bladder from the seat cushion foam pad.
NOTE: A production OCS bladder is shown A OCS service kit similar.
Install the 3 OCS bladder pin-type retainers to the seat cushion frame.
3. Install the OCS module.
- Slide the OCS module back on the OCS module bracket until it is fully seated and locked in past the OCS module bracket retainer.
- Install the 2 screws in the OCS module.
4. Slide the pressure sensor on the bracket until it is fully seated and locked in past the bracket retainer.
5. Install the 2 seat wiring harness routing clip to the seat cushion frame.
All seats
6. Position the cushion trim cover to the foam pad and install the hog rings.
7. Install the foam pad and trim cover to the cushion frame and fasten the J-clips.
8. Route the backrest latch release cable through the cushion frame and install the pin-type retainer.
Driver seat
9. Install the seat position sensor and 2 screws to the seat track.
All seats
10. Position the seat track to the cushion frame assembly and install the 4 bolts.
- Tighten to 6 Nm (53 lb-in)
Passenger seat
11. Install the seat wiring harness retainer clip and attach the seat wiring harness connector to the seat cushion frame.
All seats
12. Attach the cushion trim cover rear J-clip.
13. Install the front seat backrest.
14. Install the front seat.
15. Repower the SRS Do not prove out the SRS at this time.
16. WARNING:
- Make sure the front passenger seat repair is complete, the seat is completely assembled, all components (head restraint, seat side shield, etc.) are correctly installed and the front passenger seat is correctly installed to the vehicle before carrying out the OCS system reset. Failure to follow these instructions may increase the risk of personal injury or death in a crash.
- Do not separate components.
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 voltage to the OCS module 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 4-second time period has passed after cycling the ignition switch ON before carrying out the OCS system reset process.
NOTE: If the first attempt to carry out the OCS system reset is unsuccessful and DTC C1941 is reported, a second attempt must be made. If the second attempt to carry out the OCS system reset is unsuccessful and DTC C1941 is reported a second time, a new OCS system service kit must be installed.
Carry out the occupant classification sensor (OCS) system reset.
- With the front passenger seat empty, use a scan tool to trigger the active command.
All seats
17. NOTE: The ignition switch must be cycled after the OCS system reset.
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 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 SRS fault is present, the air bag indicator will:
- fail to light.
- remain lit continuously.
- flash at a 5Hz rate (RCM not configured).
The air bag 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 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 RCM and OCS module DTCs using a scan tool.