Tire Pressure Sensor: Service and Repair
REMOVAL - TIRE PRESSURE SENSOR/ TRANSMITTER1. Remove the tire/wheel from the vehicle.
CAUTION: When removing the stick on balancing weights from the wheel, do not use an abrasive cleaner or a cleaner, which will damage the protective finish on the wheel.
2. Remove the balancing weights from the wheel.
NOTE: The cap used on this valve stem contains an O-ring seal to prevent contamination and moisture from entering the valve stem. Retain this valve stem cap for re-use. Do not substitute a regular valve stem cap in its place.
3. Remove the cap from the valve stem.
NOTE: The valve stem used on this vehicle is made of aluminum and the core is nickel plated brass. The original valve stem core must be reinstalled and not substituted for a valve stem core made of a different material. This is required to prevent corrosion in the valve stem caused by the different metals.
4. Using the appropriate tool, remove the core from the valve stem.
5. Let the tire fully deflate.
CAUTION: The pressure transmitter must be removed from the wheel and dropped into the tire prior to breaking the bead and dismounting the tire. Failure to do this will greatly increase the risk of damaging the pressure transducer when servicing the tire.
6. Remove nut mounting valve stem of pressure sensor/transmitter to the wheel. Drop sensor/transmitter into tire.
CAUTION: When breaking the top and bottom bead of the tire off the wheel, care must be used so the bead breaking mechanism on the tire changer does not damage the wheel. This includes the surface of the wheel flange on the inside of the wheel.
7. Using the tire changer manufacturers procedure, first break down the upper bead of the tire. Then break down the bottom bead of the tire.
CAUTION: When dismounting the upper tire bead from the wheel, the proper procedure must be used. Not using the proper procedure will result in damage to the wheel and tire.
8. Dismount the upper bead of the tire from the wheel. The upper bead must be fully dismounted from the wheel to remove the tire pressure transmitter from the inside of the tire. The bottom bead of the tire does not need to be removed from the wheel.
9. Pull upward on the tire. Reach into the tire and remove the pressure sensor/transmitter from inside the tire.
INSTALLATION - TIRE PRESSURE SENSOR/ TRANSMITTER
NOTE: When installing the tire pressure sensor/ transmitter, inspect the sealing O-ring at the bottom of the valve stem for any sign of damage or deterioration. Replace O-ring if necessary, before installing the pressure transmitter on the wheel. Also, be sure the surface of the wheel that the O-ring seals against is clean and not damaged.
1. Install the tire pressure sensor/transmitter on the wheel.
2. Tighten the tire pressure sensor/transmitter mounting nut to a torque of 11 Nm (97 inch lbs.). When tightening the sensor/transmitter nut, hold the transmitter so it does not rotate. If the sensor/transmitter rotates so the top edge is not level with the wheel, damage to the transmitter will occur when mounting the tire. If the top edge of the transmitter is not level with the wheel, it can be rotated into position by lightly tapping it with your hand.
CAUTION: When mounting the upper bead of the extended mobility tire, the proper procedure must be used. Not using the proper procedure will result in damage to the wheel and tire.
3. Mount the upper bead of the tire on the wheel.
4. Install the original or an OEM replacement valve stem cap on the valve stem.
5. Using a soap solution, check that no air leak is present where the valve stem mounts to the wheel.
6. Balance the tire/wheel assembly using the correct procedure for using wheel flange mount and stick-on wheel weights. For balancing information and wheel weight positioning.
7. Install the tire/wheel on the vehicle.
8. Program the identification code for the new tire pressure sensor/transmitter into the LTPW module.
9. Verify that the LTPW module has been programmed with the identification code from the new tire pressure sensor/transmitter using the DRBIII(R) scan tool. If the identification code and tire pressure thresholds from the new tire pressure transmitter are present in the receivers memory the new tire pressure transmitter has been correctly programmed to the receiver.