Tire Pressure Sensor: Service and Repair

Tire Pressure Sensor Replacement

Removal

NOTE: For CR model, if tire sealant has been used for repair the flat tire, do the tire sealant removal first. In this case, the tire removal procedure is normally, but be careful not to damage the tire pressure sensor is dropped into the inside of the tire, and not to spill the remaining tire sealant.

1. Raise the vehicle, and support it with safety stands in the proper locations.
2. Remove the wheel with the faulty sensor.
3. Remove the tire valve stem cap and the valve stem core, and let the tire deflate.
4. Remove any balance weights, and then break the bead loose from the wheel with a commercially available tire changer (A).

N0TICE:
Note these items to avoid damaging the tire pressure sensor:
^ Do the outside of the wheel first.
^ Position the wheel as shown so the valve stem (B) is 90 degrees from the bead breaker (C) as shown.
^ Do not position the bead breaker of the tire changer too close to the rim.





5. Position the wheel so the tire machine (A) and, tire iron (B) are next to the valve stem (C) and will move away from it when the machine starts. Then remove the tire from the wheel.





6. Remove the valve stem nut (A) and washer (B), then remove the tire pressure sensor with valve stem (C) from the wheel.





7. Remove and discard the valve stem grommet (A) from the tire pressure sensor (B).





8. CR model: Thoroughly clean the tire and the inside of the wheel with cold water if the tire sealant was used.

Installation





1. Before installing the tire pressure sensor, clean the mating surfaces on the sensor and the wheel.
2. Install the tire pressure sensor (A) and the washer (B) to the wheel (C), and tighten the valve stem nut (D) finger tight. Make sure the pressure sensor is resting on the wheel.





3. Tighten the valve stem nut to the specified torque while holding the tire pressure sensor.

NOTE:
^ Do not use air or electric impact tools to tighten a valve stem nut.
^ Do not twist the tire pressure sensor with the wheel, as this will damage or deform the valve stem grommet.

4. Lube the tire bead sparingly, and position the wheel so the tire machine (A) and tire iron (B) are next to the valve stem (C) and will move away from it when the machine starts. Then install the tire onto the wheel.





5. With a dry air source, inflate the tire to 300 kPa (3.1 kgf/cm2, 44 psi) to seat the tire bead to the rim, then adjust the tire pressure, then install the valve stem cap.

NOTE: Make sure the tire bead is seated on both sides of the rim uniformly.

6. Check and adjust the wheel balance, then install the wheels on the vehicle.
7. Remove the jack stands, and lower the vehicle. Torque the wheel nuts to specifications.
8. Connect the HDS, and memorize the tire pressure sensor IDs using the TPMS sensor initializer tool.