Tire Pressure Sensor: Service and Repair

Tire Pressure Sensor Replacement

Removal

1. Raise the vehicle, and support it with safety stands in the proper locations. Service and Repair

2. Remove the wheel with the faulty sensor.

3. Remove the tire valve cap and the valve 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).
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 and discard the valve stem nut (A), then remove the tire pressure sensor and valve stem (B) from the wheel.
NOTE: Use a new nut and a new valve stem on reassembly.






7. Remove and discard the valve stem (A), and the screw (B) from the tire pressure sensor (C).
NOTE: The valve stem grommet (D) might stay in the wheel; make sure you remove it.






Installation

NOTE: Use only wheels that have a "TPMS" mark (A) on them.






1. Assemble a new valve stem (A), a new screw (B), and a sensor-transmitter (C).
NOTE: Always use a new valve stem and a new screw.

2. Before installing the tire pressure sensor, clean the mating surfaces on the sensor and the wheel.






3. Install the tire pressure sensor (A) to the wheel (B), and tighten the valve nut (C) finger tight. Make sure the pressure sensor is resting on the wheel.

4. Tighten the valve nut to the specified torque while holding the tire pressure sensor toward (D) the wheel. You may hear a snap or pop as you tighten the nut. This is normal.
NOTE:

- Do not reuse the nuts that had been tightened, even one time, to the specified torque, as they are deformed inside (E).

- Do not use air or electric impact tools to tighten a valve stem nut.

- Tightening the nut beyond the specified torque can damage the nut.

- Make sure that there is no space between the sensor and the wheel.





5. Lube the tire bead, and position the wheel so the tire machine (A) and the 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.

6. 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 to front 220 kPa (2.2 kgf/cm2, 32 psi), rear 210 kPa (2.1 kgf/cm2, 30 psi), and install the valve stem cap.
NOTE: Make sure the tire bead is seated on both sides of the rim uniformly.

7. Check and adjust the wheel balance, then install the wheels to the vehicle.

8. Remove the safety stands, and lower the vehicle.

9. Connect the HDS, and memorize the pressure sensor ID(s). Testing and Inspection