Tire Pressure Sensor: Service and Repair
TIRE PRESSURE MONITOR VALVECOMPONENTS:
REPLACEMENT
1. REMOVE FRONT WHEEL
2. REMOVE REAR WHEEL
3. REMOVE TIRE PRESSURE MONITOR VALVE SUB-ASSEMBLY
a. Remove the valve core and cap, and release the air from the tire.
b. After ensuring that a sufficient amount of air has been released, remove the nut and washer that is used to secure the tire pressure monitor valve sub assembly and drop the sensor inside the tire.
HINT: Keep the removed cap, valve core, nut and washer.
c. After dropping the tire pressure monitor valve sub assembly into the tire, disengage the bead using the shoe of the tire remover.
NOTICE: Be careful not to damage the tire pressure monitor valve sub-assembly due to interference between the sensor and tire bead.
d. Remove the bead on the upper side in the usual way.
e. Take out the sensor from the tire and remove the bead on the lower side as in usual operation.
f. Remove the inner grommet from the tire pressure monitor valve sub-assembly.
HINT: Check that no cracks or damage are identified on the grommet. If necessary, replace the grommet, the washer and the nut.
4. INSTALL TIRE PRESSURE MONITOR VALVE SUB-ASSEMBLY
a. Insert the tire pressure monitor valve into the valve installation hole. Insert from the inside of the rim so that the print surface can be seen.
NOTICE:
^ Check that there is no visible deformation, damage or other abnormalities on the transmitter.
^ Check that there is no foreign matter on the inner grommet and around the rim hole.
^ If installed in the reverse direction, the tire pressure monitor valve sub-assembly may be damaged or fail to transmit signals when running at high speeds.
b. Install the washer on the tire pressure monitor valve sub-assembly from the rim side and tighten the nut.
Torque: 4.0 Nm (41 kgf-cm, 35 inch lbs.)
NOTICE:
^ Check that there is no foreign matter on the washer and nut.
^ If the tire and tire pressure monitor valve subassembly have been removed, check that there is no damage or cuts visible, and no foreign matter, such as mud, dirt or sand attached to the grommet. Replace the grommet with a new one if any of the defects mentioned above are found.
^ Check that there is no oil, water or lubricant around the rim hole, tire pressure monitor valve sub-assembly, washer and nut. Failing to do so may result in improper installation.
c. After the tire is inflated, the valve nut may be loose. Retighten the nut to the specified torque and then check for air leaks with soapy water.
Torque: 4.0 Nm (41 kgf-cm, 35 inch lbs.)
d. Set the wheel disc to the mounting machine and install the lower tire bead. Position the main body of the sensor in the shaded area as shown in the illustration.
NOTICE: If the sensor is positioned outside this area, it generates interference with the tire bead, and may cause damage to the sensor.
e. Install the upper bead.
NOTICE: Make sure that the tire bead and tool do not interfere with the main body of the sensor and that the sensor is not clamped by the bead.
5. INSTALL FRONT WHEEL
Torque: 103 Nm (1,050 kgf-cm, 76 ft. lbs.)
6. INSTALL REAR WHEEL
Torque: 103 Nm (1,050 kgf-cm, 76 ft. lbs.)
7. INSPECT TIRE
8. REGISTRATION OF TRANSMITTER ID
9. INSPECT TIRE PRESSURE WARNING SYSTEM
SST 09843-18040
DISPOSAL
HINT: The tire pressure monitor valve sub-assembly is powered by a lithium battery. When disposing of the tire pressure sensor sub-assembly, remove the battery and dispose of it correctly.
1. DISPOSE OF THE TIRE PRESSURE MONITOR VALVE SUB-ASSEMBLY
a. Use the tip of a screwdriver to pry off the back cover.
b. The battery and base board covered with silicone resin are exposed. While taking out the battery, cut the 2 terminals that connect the battery to the base board.