Occupant Classification Sensor - Manual Seat Track
OCCUPANT CLASSIFICATION SENSOR - MANUAL SEAT TRACKRemoval
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.
- 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 front passenger seat.
4. Remove the manual seat track.
5. NOTE: 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.
All OCS weight sensor bolt(s)
7. NOTE: Outboard front cross brace screws shown, inboard similar.
On the side with the affected OCS I-bolt(s), remove the 2 front cross brace screws.
8. On the side with the affected OCS weight sensor bolt(s), disengage the seat adjuster handle spring and position it aside.
9. Separate the seat adjuster handle from the affected side of the seat track rail with the OCS weight sensor bolt(s).
10. NOTE: Outboard rear cross brace screws shown, inboard similar.
On the side with the affected OCS weight sensor bolt(s), remove the 2 rear cross brace screws.
11. Remove and discard the 2 OCS weight sensor bolt nuts from the affected side of the seat track rail with the OCS weight sensor bolt(s).
12. Remove the side plate with the OCS weight sensor bolt(s) from the seat track rail.
13. 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.
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.
14. 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.
15. Release the clamp and remove the OCS weight sensor bolt and spring washer from the side plate. 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 occupant classification sensor (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 2 new OCS weight sensor bolt retaining clips in the OCS weight sensor groove underneath the O-ring seal.
3. Unclamp the side plate with the installed OCS weight sensor bolt from the bench or table.
4. NOTE: Slight rotational adjustment of the OCS weight sensors bolts may be necessary to install the OCS weight sensor bolts and side plate to the seat track rail.
Install the side plate and 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. Install the seat adjuster handle to the seat track rail.
7. Engage the seat adjuster handle spring.
8. Install the 2 rear cross brace screws.
- Tighten to 5 Nm (44 lb-in).
9. Install the 2 front cross brace screws.
- Tighten to 5 Nm (44 lb-in).
Inboard OCS weight sensor bolt(s)
10. Install the nut and the safety belt buckle pretensioner.
- Tighten to 40 Nm (30 lb-ft).
All OCS weight sensor bolt(s)
11. Install the manual seat track.
12. Install the passenger seat and repower the supplemental restraints system (SRS). Do not prove out the SRS at this time.
13. 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