Tire Monitoring System: Service Precautions
TIRE PRESSURE WARNING SYSTEMPRECAUTION
(2006/02-2006/07)
1. NOTICE FOR INITIALIZATION
NOTICE:
When disconnecting the cable from the negative (-) battery terminal, initialize the following system(s) after the cable is reconnected.
2. TIRE PRESSURE WARNING SYSTEM PRECAUTION
(a) When the tire pressure warning light turns on, immediately check the pressure of the tire and adjust it to the specified value. (The tire pressure warning light will turn on if there is an open in the tire pressure warning light circuit.)
Standard pressure: 240 kPa (2.4 kgf/cm2, 35 psi)
NOTICE:
Check the spare tire as well since this system only monitors the pressure of the 4 tires installed to the vehicle.
(b) When the tire pressure warning light blinks, there is a malfunction in the system. Check for DTCs.
(c) Changing the tire pressure warning select switch between "MAIN" and "2nd" allows registration of 2 transmitter ID set. Check the tire pressure warning select switch to see whether the tire is registered in "MAIN" or "2nd".
If the vehicle is driven without selecting switch state correctly, the tire pressure warning ECU determines the system is malfunctioning and causes the tire pressure warning light to blink.
(d) It is necessary to register the transmitter ID in the tire pressure warning ECU after replacing the tire pressure warning valve and transmitter and/or tire pressure warning ECU.
(e) When replacing the tire pressure warning ECU:
(1) Using the DATA LIST, read the transmitter IDs registered in the ECU and make a note of them before removing the tire pressure warning ECU.
(2) Register the transmitter IDs after installing a new tire pressure warning ECU.
(f) Tire and wheel replacement or tire rotation:
^ After tires or wheels (with new tire pressure warning valve and transmitter) are replaced, it is necessary to register the transmitter IDs.
^ After the set of tires and wheels are replaced, be sure to select the tire pressure warning select switch.
^ It is not necessary to register the transmitter IDs after tire rotation is performed.
^ After dropping the tire pressure warning valve and transmitter into the tire, disengage the bead from the wheel.
NOTICE:
Be careful as the tire pressure warning valve and transmitter may become damaged due to interference between the sensor and tire bead.
^ As tire pressure specifications differ depending on the tire type, initialization is necessary to reset the warning threshold.
(g) Precautions about the tire pressure:
^ The tire pressures decrease naturally.
^ In winter, the tire pressure may decrease depending on the ambient temperature. The tire pressure decreases about 10 kPa (0.2 kgf/cm2, 1.45 psi) when the ambient temperature is below 10°C (50°F). The tire pressure warning will be indicated quickly if the tire pressure is not adjusted when the ambient temperature is low. Therefore, increase the tire pressure above the specified value.
(h) When replacing the tire pressure warning valve and transmitter:
(1) Take a note of the 7 digit number (transmitter ID) written on the tire pressure warning valve and transmitter when replacing it. Register the transmitter IDs in the tire pressure warning ECU after replacing the tire pressure warning valve and transmitter and installing the tires and wheels on the vehicle.
NOTICE:
The transmitter ID is written on the tire pressure warning valve and transmitter. The ID will be unable to be read after installing the tire pressure warning valve and transmitter on the tire and wheel. Therefore, take a note of the transmitter ID before installing the tire pressure warning valve and transmitter.
3. PRECAUTION FOR INITIALIZATION
(a) Initialization is necessary when one of the following has occurred: 1) the tire pressure warning ECU has been replaced; 2) tires with different tire pressures have been replaced; 3) tire pressure warning valve and transmitters have been replaced, or 4) transmitter IDs have been registered into the tire pressure warning ECU.
HINT:
The tire pressure warning system will not operate properly if it is not initialized.
4. FAIL-SAFE FUNCTION
(a) When a malfunction occurs in the tire pressure warning system, the tire pressure warning light blinks to inform the driver of the system failure.
(b) The result of this diagnosis is stored in the tire pressure warning ECU.
PRECAUTION
(2006/07- )
1. NOTICE FOR INITIALIZATION
NOTICE:
When disconnecting the cable from the negative (-) battery terminal, initialize the following system(s) after the cable is reconnected.
2. TIRE PRESSURE WARNING SYSTEM PRECAUTION
(a) When the tire pressure warning light turns on, immediately check the pressure of the tire and adjust it to the specified value. (The tire pressure warning light will turn on if there is an open in the tire pressure warning light circuit.)
Standard pressure: 240 kPa (2.4 kgf/cm2, 35 psi)
NOTICE:
Check the spare tire as well since this system only monitors the pressure of the 4 tires installed to the vehicle.
(b) When the tire pressure warning light blinks, there is a malfunction in the system. Check for DTCs.
(c) Changing the tire pressure warning select switch between "MAIN" and "2nd" allows registration of 2 transmitter ID set. Check the tire pressure warning select switch to see whether the tire is registered in "MAIN" or "2nd".
If the vehicle is driven without selecting switch state correctly, the tire pressure warning ECU determines the system is malfunctioning and causes the tire pressure warning light to blink.
(d) It is necessary to register the transmitter ID in the tire pressure warning ECU after replacing the tire pressure warning valve and transmitter and/or tire pressure warning ECU.
(e) When replacing the tire pressure warning ECU:
(1) Using the DATA LIST, read the transmitter IDs registered in the ECU and make a note of them before removing the tire pressure warning ECU.
(2) Register the transmitter IDs after installing a new tire pressure warning ECU.
(f) Tire and wheel replacement or tire rotation:
^ After tires or wheels (with new tire pressure warning valve and transmitter) are replaced, it is necessary to register the transmitter IDs.
^ After the set of tires and wheels are replaced, be sure to select the tire pressure warning select switch.
^ It is not necessary to register the transmitter IDs after tire rotation is performed.
^ After dropping the tire pressure warning valve and transmitter into the tire, disengage the bead from the wheel.
NOTICE:
Be careful as the tire pressure warning valve and transmitter may become damaged due to interference between the sensor and tire bead.
^ As tire pressure specifications differ depending on the tire type, initialization is necessary to reset the warning threshold.
(g) Precautions about the tire pressure:
^ The tire pressures decrease naturally.
^ In winter, the tire pressure may decrease depending on the ambient temperature. The tire pressure decreases about 10 kPa (0.2 kgf/cm2, 1.45 psi) when the ambient temperature is below 10°C (50°F). The tire pressure warning will be indicated quickly if the tire pressure is not adjusted when the ambient temperature is low. Therefore, increase the tire pressure above the specified value.
(h) When replacing the tire pressure warning valve and transmitter:
(1) Take a note of the 7 digit number (transmitter ID) written on the tire pressure warning valve and transmitter when replacing it. Register the transmitter IDs in the tire pressure warning ECU after replacing the tire pressure warning valve and transmitter and installing the tires and wheels on the vehicle.
NOTICE:
The transmitter ID is written on the tire pressure warning valve and transmitter. The ID will be unable to be read after installing the tire pressure warning valve and transmitter on the tire and wheel. Therefore, take a note of the transmitter ID before installing the tire pressure warning valve and transmitter.
3. PRECAUTION FOR INITIALIZATION
(a) Initialization is necessary when one of the following has occurred: 1) the tire pressure warning ECU has been replaced; 2) tires with different tire pressures have been replaced; 3) tire pressure warning valve and transmitters have been replaced, or 4) transmitter IDs have been registered into the tire pressure warning ECU.
HINT:
The tire pressure warning system will not operate properly if it is not initialized.
4. FAIL-SAFE FUNCTION
(a) When a malfunction occurs in the tire pressure warning system, the tire pressure warning light blinks to inform the driver of the system failure.
(b) The result of this diagnosis is stored in the tire pressure warning ECU.