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Seat Track: Service and Repair

Seat Track


Special Tool(s):






Removal

WARNING:
- Always wear safety glasses when repairing an air bag supplemental restraint system (SRS) vehicle and when handling an airbag module. This will reduce the risk of injury in the event of an accidental deployment.
- Never probe the connectors on the air bag module. Doing so can result in air bag deployment, which can result in personal injury.
- To reduce the risk of personal injury, do not use any memory saver devices.

NOTE:
- 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.
- To install a new occupant classification module or an occupant classification sensor (OCS) weight sensor bolt, refer to the appropriate procedure in Air Bag Systems.

All seats
1. Position the seat to access all the seat track-to-floor bolts and the safety belt retractor belt anchor nut.
2. Depower the SRS.
3. Remove the front seat.
4. Remove the front seat backrest.
5. Separate the seat wire harness main feed electrical connector(s) from the seat track brackets.
6. Disconnect the safety belt buckle pretensioner and safety belt buckle switch electrical connectors. Separate any retainers holding the wire harness or electrical connectors to the seat track and safety belt buckle and pretensioner.
7. Disconnect all the seat track motor electrical connectors and separate any retainers holding the wire harness or electrical connectors to the seat track (if equipped).

Driver seat
8. Disconnect the seat track position sensor and separate any retainers holding the wire harness or electrical connectors to the seat track.
9. Disconnect the driver seat module (DSM) electrical connectors and separate any retainers holding the wire harness to the seat track (if equipped).

Passenger seat with manual seat track







10. NOTE: Rear inboard occupant classification sensor (OCS) weight sensor bolt protection bracket shown, others similar.

Separate the wire harness from the OCS weight sensor bolt protection brackets, remove the 4 OCS weight sensor bolt protection bracket screws and remove the 4 OCS weight sensor bolt protection brackets.

Passenger seat with power seat track
11. Remove the cushion side shield in the following sequence.
1. If equipped with manual recline, release the clip and remove the manual recline handle.

2. NOTE: Release the tension on the manual lumbar cable before removing the manual lumbar handle.

If equipped with manual lumbar, release the 2 clips on the back of the manual lumbar handle then pull and remove the manual lumbar handle.

3. Remove the cushion side shield screw(s).
4. Slide the cushion side shield up in the rear to release the retainer.
5. Slide the cushion side shield forward to disengage the retainer.
6. Disconnect the seat control switch electrical connector.
- Remove the cushion side shield.

12. Separate the wire harness from the outboard OCS weight sensor bolt protection bracket, remove the 2 outboard OCS weight sensor bolt protection bracket screws and remove the outboard OCS weight sensor bolt protection bracket.
13. Separate the wire harness from the inboard OCS weight sensor bolt protection bracket, remove the inboard OCS weight sensor bolt protection bracket screw and the inboard OCS weight sensor bolt protection bracket.

Passenger seat
14. Mark the 4 OCS weight sensor bolt electrical connectors so that they can be reconnected in their same location at installation.
15. Disconnect the 4 OCS weight sensor bolt electrical connectors and detach any wire harness retainers to the seat track.
16. Disconnect the occupant classification module and detach any wire harness retainers to the seat track.

Passenger seat with power seat track
17. Disconnect the heated seat module electrical connector and detach any wire harness retainers to the seat track (if equipped).
18. Disconnect the climate control seat module (CCSM) electrical connectors and detach any wire harness retainers to the seat track (if equipped).

All seats
19. Separate any retainers holding the seat wire harness or electrical connectors to the seat track.
20. Remove the 4 seat track-to-cushion frame bolts and remove the seat track.

All passenger seats
21. To install a new occupant classification module or an OCS weight sensor bolt, refer to the appropriate procedure in Air Bag Systems.

Installation

Power seat tracks
1. Position the cushion frame-to-seat track rear brackets to the power seat track rear cross tube.
- Make sure the locator tabs of the cushion frame-to-seat track rear brackets are aligned correctly to the cushion frame.

Passenger seat with fold flat backrest







2. Make sure the fold flat recliner cable is routed correctly between the power seat track cross tube and cushion frame.

All seat tracks
3. Install the 4 cushion frame-to-seat track bolts.
- Tighten to 23 Nm (17 lb-ft).

All passenger seats
4. For correct front passenger seat cushion wire harness routing, refer to Seat Wire Harness Routing-Front Passenger Cushion. Locations
5. Connect the 4 OCS weight sensor bolt electrical connectors, as marked during removal and attach any retainers holding the wire harness to the seat track.
6. Connect the occupant classification module and attach any wire harness retainers to the seat track.

Passenger seat with power seat track
7. Position the inboard OCS weight sensor bolt protection bracket to the seat track, install the inboard OCS weight sensor bolt protection bracket screw and attach the wire harness to the inboard OCS weight sensor bolt protection bracket.
- Tighten to 2 Nm (18 lb-in).

8. Position the outboard OCS weight sensor bolt protection bracket to the seat track, install the 2 outboard OCS weight sensor bolt protection bracket screws and attach the wire harness to the outboard OCS weight sensor bolt protection bracket.
- Tighten to 6 Nm (53 lb-in).

9. Install the cushion side shield in the following sequence.
1. Position the side shield to the seat and connect the seat control switch electrical connector.
2. Slide the cushion side shield rearward to engage the cushion side shield retainer to the seat track bracket.
3. Slide the cushion side shield down in the rear to engage the retainer.
4. Install the cushion side shield screw(s).
5. Install the manual lumbar handle (if equipped).
6. Position the clip on the manual recline handle and install the manual recline handle (if equipped).

10. Connect the heated seat module electrical connector and attach any retainers holding the wire harness to the seat track (if equipped).
11. Connect the CCSM electrical connectors and attach any retainers holding the wire harness to the seat track (if equipped).

Passenger seat with manual seat track







12. NOTE: Rear inboard OCS weight sensor bolt protection bracket shown, others similar.

Position each of the 4 OCS weight sensor bolt protection brackets, install the 4 OCS weight sensor bolt protection bracket screws and attach the wire harness to the OCS weight sensor bolt protection brackets.
- Tighten the front OCS weight sensor bolt protection brackets to 5 Nm (44 lb-in).
- Tighten the rear OCS weight sensor bolt protection brackets to 2 Nm (18 lb-in).

Driver seat
13. Connect the DSM electrical connectors and attach any retainers holding the wire harness to the seat track (if equipped).
14. Connect the seat track position sensor and attach any retainers holding the wire harness or electrical connectors to the seat track.

All seats
15. Connect all the seat track motor electrical connectors and attach any retainers holding the wire harness or electrical connectors to the seat track (if equipped).
16. Connect the safety belt buckle pretensioner and safety belt buckle switch electrical connectors. Attach any retainers holding the wire harness or electrical connectors to the seat track.
17. Attach the seat wire harness main feed in electrical connector(s) to the seat track brackets.
18. Install the front seat backrest.
19. Install the front seat and repower the SRS. If a passenger seat has been serviced, do not prove out the SRS at this time.

Passenger seat with existing seat track
20. Carry out the Occupant Classification Sensor (OCS) System Zero Seat Weight Test and prove out the SRS.

Passenger seat with new seat track, OCS module or OCS weight sensor bolt
21. Carry out the Occupant Classification Sensor (OCS) System Reset and prove out the SRS.
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