Seat Sensor/Switch: Service and Repair
SEAT POSITION SENSORSpecial Tool(s):
SPECIAL TOOL(S)
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.
- Never probe the connectors on the air bag module. Doing so can result in air bag deployment, which can result in personal injury.
- 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.
- The restraint system diagnostic tool is for restraint system service only. Remove from vehicle prior to road use. Failure to remove could result in injury and possible violation of vehicle safety standards.
NOTE:
- If a seat equipped with a seat mounted side air bag and/or a safety belt pretensioner (if equipped) system is being serviced, the air bag system must be deactivated.
- Restraint system diagnostic tools MUST be installed under the seats in the seat air bag (if equipped) and safety belt pretensioner (if equipped) to floor connectors.
- Diagnostics or repairs are not to be performed on a seat equipped with a seat air bag with the seat in the vehicle. Prior to attempting to diagnose or repair a seat concern when equipped with a seat air bag, the seat must be removed from the vehicle and the restraint system diagnostic tools must be installed in the seat air bag electrical connectors. The restraint system diagnostic tools must be removed prior to operating the vehicle over the road.
- The 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 perform the diagnostic procedure again.
1. NOTE: The power seat track seat position sensor is mounted at the outboard front of the seat track.
The manual seat track seat position sensor is mounted at the LH front of the seat track.
Position the driver seat rearward enough so that upon removal the sensor can clear the bracket.
2. WARNING: To avoid accidental deployment and possible personal injury, the backup power supply must be depleted before repairing or replacing any front or side air bag supplemental restraint system (SRS) components and before servicing, replacing, adjusting or striking components near the front or side air bag sensors or RCM, such as doors, instrument panel, console, door latches, strikers, seats and hood latches.
The front impact severity sensor is located under the hood latch bracket.
The first row side impact sensors (if equipped) are located under the seat, beneath the carpet.
The second row side impact sensors (if equipped) are located at or near the base of the C-pillar.
To deplete the backup power supply energy, disconnect the battery ground cable and wait at least one minute. Be sure to disconnect auxiliary batteries and power supplies (if equipped).
Disconnect the battery ground cable and wait at least one minute.
3. WARNING: To reduce the risk of serious personal injury, read and follow all warnings, cautions, notes, and instructions in the supplemental restraint system (SRS) deactivation/reactivation procedure. Refer to Air Bag(s) Arming and Disarming.
Deactivate the supplemental restraint system (SRS).
4. WARNING: To reduce the risk of serious personal injury, read and follow all warnings, cautions, notes, and instructions in the seat removal and installation procedure.
Remove the driver seat.
5. NOTE:
- The manual seat track seat position sensor is shown, the power seat track position sensor is similar.
- Make sure the battery negative cable is still disconnected before continuing with the installation portion of this procedure.
Remove the parts in the order indicated in the illustration and table.
INSTALLATION
1. To install, reverse the removal procedure.
2. WARNING: To reduce the risk of serious personal injury, read and follow all warnings, cautions, notes, and instructions in the seat removal and installation procedure.
Install the driver seat.
- Do not reactivate the supplemental restraint system as instructed to do so in the seat removal and installation procedure at this time.
- After installation, position the driver seat from its forward most position to its rearmost position and then back again. While positioning the seat, make sure that the seat position sensor, bracket or the wire harness do not come in contact with any other part of the seat that may cause damage.
3. Connect the battery ground cable.
4. With the restraint system diagnostic tools installed at all deployable devices, prove out the supplemental restraint system (SRS). Prove Out Procedure
5. Disconnect the battery ground cable and wait at least one minute.
6. WARNING: To reduce the risk of serious personal injury, read and follow all warnings, cautions, notes, and instructions in the supplemental restraint system (SRS) deactivation/reactivation procedure. Refer to Air Bag(s) Arming and Disarming.
Reactivate the supplemental restraint system (SRS). Refer to Air Bag(s) Arming and Disarming.
7. Connect the battery ground cable.
8. WARNING: The restraint system diagnostic tool is for restraint system service only. Remove from the vehicle prior to road use. Failure to remove could result in injury and possible violation of vehicle safety standards.
With all the restraint system diagnostic tools removed, prove out the supplemental restraint system (SRS). Prove Out Procedure