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Occupant Classification Sensor - Power Seat Track

OCCUPANT CLASSIFICATION SENSOR - POWER SEAT TRACK


Part 1:






Part 2:






Removal

WARNING:
- Always wear safety glasses when repairing an air bag supplemental restraint system (SRS) vehicle and when handling an air bag module. This will reduce the risk of injury in the event of an accidental deployment.
- To reduce the risk of personal injury, do not use any memory saver devices.

CAUTION: Use care when handling the seat and track assembly. Dropping the assembly or sitting on a seat not secured in the vehicle may result in damaged components.

NOTE:
- 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.
- If any occupant classification sensor (OCS) weight sensor bolt nuts are removed, new OCS weight sensor bolt nuts must be installed.
- The supplemental restraint system (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.
- Repair is made by installing a new part only. If the new part does not correct the condition, install the original part and carry out the diagnostic procedure again.

All occupant classification sensor (OCS) weight sensor bolt(s)
1. Position the seat to access all the seat track-to-floor bolts and the safety belt anchor.
2. Depower the supplemental restraint system (SRS).
3. Remove the passenger front seat.
4. Remove the power seat track.







5. NOTE:
- Inboard seat track rail shown, outboard similar.
- After marking the seat track rails, do not change the position of the seat track.

Mark the position of both seat track rails.

Inboard OCS weight sensor bolt(s)
6. Remove the nut and the safety belt buckle pretensioner.

Outboard OCS weight sensor bolt(s)
7. Remove the front retainer and the outboard seat track riser cover shield.
8. Remove the 2 retainers and the OCS weight sensor bolt protection bracket.

All OCS weight sensor bolt(s)
9. On the side with the affected OCS weight sensor bolt(s), remove the nut from the seat track front cross brace.
10. Remove and discard the 2 OCS weight sensor bolt nuts from the affected side of the seat track rail with the OCS weight sensor(s).







11. NOTE: Outboard side shown, inboard similar.

Separate the front seat track motor cable from the affected seat track rail. Then remove the side plate with the OCS weight sensor bolts from the seat track rail.







12. CAUTION: Do not overtighten the side plate with the OCS weight sensor bolts to the bench or table. Tighten only enough to compress the spring washer. Overtightening may damage the side plate or OCS weight sensor bolts.

Using a suitable tool, clamp the side plate to a bench or table to compress the spring washer on the affected OCS weight sensor bolt as shown.







13. NOTE: Note the position of the OCS weight sensor bolt, spring washer and retaining clip for installation.

Remove and discard the retaining clip from the affected OCS weight sensor bolt.

14. Release the clamp and remove the OCS weight sensor bolt and spring washer from the side plate.

Installation

All OCS weight sensor bolt(s)

1. CAUTION: Do not overtighten the side plate with the occupant classification sensor (OCS) weight sensor bolts to the bench or table. Tighten only enough to compress the spring washer. Overtightening may damage the side plate or OCS weight sensor bolts.

Position the spring washer and OCS weight sensor bolt in the side plate. Then clamp the side plate to a bench or table to compress the OCS weight sensor bolt spring washer.







2. NOTE: Make sure the OCS weight sensor bolt retaining clip is seated fully in the OCS weight sensor bolt groove underneath the OCS weight sensor O-ring seal.

Install the OCS weight sensor bolt retaining clip.







3. Remove the clamp and the side plate from the bench or table.







4. NOTE: Slight rotational adjustment of the front seat track motor cable and OCS weight sensor bolts may be necessary to install the OCS weight sensor bolts and side plate to the seat track rail.

Install the front seat track motor cable to the seat track rail. Then install the side plate with the OCS weight sensor bolts to the seat track rail.

5. NOTE: When installing the side plate to the seat track rail, 2 new OCS weight sensor nuts must be installed.

Install the 2 new OCS weight sensor bolt nuts to the seat track rail.
- Tighten to 33 Nm (24 lb-ft).

6. NOTE: Outboard side shown, inboard similar.

Install the nut to the seat track front cross brace.
- Tighten to 20 Nm (15 lb-ft).

Outboard OCS weight sensor bolt(s)
7. Install the 2 retainers and the OCS weight sensor bolt protection bracket.
8. Install the front retainer and the outboard seat track riser cover shield.

Inboard OCS weight sensor bolt(s)
9. Install the nut and the safety belt buckle pretensioner.
- Tighten to 40 Nm (30 lb-ft).

All OCS weight sensor bolt(s)
10. Install the power seat track.
11. Install the passenger seat and repower the supplemental restraints system (SRS). Do not prove out the SRS at this time.
12. Carry out the appropriate procedure after installation of an OCS system component.
- If installing the original OCS system component, carry out the Zero Seat Weight Test and prove out the SRS. Component Tests and General Diagnostics
- If installing a new OCS system component, carry out the System Reset procedure and prove out the SRS. Programming and Relearning
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