TW–58TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM
TW
Cold tire inflation pressure
(b) Make sure that the ignition switch is off.
(c) Connect the intelligent tester to the DLC3.
(d) Turn the ignition switch to the ON position.
(e) Display the "TIREPRESS" data for each wheel using the
intelligent tester.
(f) Rapidly reduce the tire pressure for each wheel at least
40 kPa (0.41 kg/cm
2, 5.8 psi) within 30 seconds.
(g) Check the DATA LIST.
TIRE PRESSURE:
HINT:
*: It may take about 5 to 6 minutes until the values are
displayed. If the values are not displayed after a few
minutes, perform troubleshooting according to the
inspection procedure for DTCs C2121/21 to C2124/24
(See page TW-42).
(h) When the "TIREPRESS" data (ID1 to ID4) has changed,
repeat this procedure to identify the tire pressure
warning valve and transmitter that corresponds to a
DTC.
(i) When all of the "TIREPRESS" data (ID1 to ID4) have
changed, identify the malfunctioning tire pressure
warning valve and transmitter based on the recorded ID
numbers and output DTC.
Result
NOTICE:
• It may take about 5 to 6 minutes to display the
updated data.
Tire Size
kPa (kgf/cm2, psi)
P215/65R16
240 (2.4, 35)
P225/60R17
Tester Display Measurement Item/Range Normal Condition Diagnostic Note
TIREPRESS1ID1 tire inflation pressure (Absolute
pressure) /
min.: 100 kPa (1 kgf/cm
2, 14 psi)
max.: 449.35 kPa (4.5 kgf/cm2, 63 psi)Actual tire inflation pressureIf 100 kPa (1 kgf/cm
2, 14 psi) for
absolute pressure is displayed, the
data has not been received.*
TIREPRESS2ID2 tire inflation pressure (Absolute
pressure) /
min.: 100 kPa (1 kgf/cm
2, 14 psi)
max.: 449.35 kPa (4.5 kgf/cm2, 63 psi)Actual tire inflation pressureIf 100 kPa (1 kgf/cm
2, 14 psi) for
absolute pressure is displayed, the
data has not been received.*
TIREPRESS3ID3 tire inflation pressure (Absolute
pressure) /
min.: 100 kPa (1 kgf/cm
2, 14 psi)
max.: 449.35 kPa (4.5 kgf/cm2, 63 psi)Actual tire inflation pressureIf 100 kPa (1 kgf/cm
2, 14 psi) for
absolute pressure is displayed, the
data has not been received.*
TIREPRESS4ID4 tire inflation pressure (Absolute
pressure) /
min.: 100 kPa (1 kgf/cm
2, 14 psi)
max.: 449.35 kPa (4.5 kgf/cm2, 63 psi)Actual tire inflation pressureIf 100 kPa (1 kgf/cm
2, 14 psi) for
absolute pressure is displayed, the
data has not been received.*
Condition Detection Condition
One of "TIREPRESS" data (ID1 to ID4) changed. Normal
No "TIREPRESS" data changed. Transmitter corresponding to DTC
TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEMTW–67
TW
INSPECTION PROCEDURE
NOTICE:
• When replacing the tire pressure warning ECU, read the IDs stored in the old ECU using the
intelligent tester and write them down before removal.
• It is necessary to perform initialization (See page TW-23) after registration (See page TW-20) of
the transmitter IDs into the tire pressure warning ECU after the ECU and/or valve and
transmitter have been replaced.
(a) Check if the vehicle is not located in areas such as
described below:
(1) Facilities or devices that use similar radio
frequencies are located in the vicinity of the vehicle.
HINT:
If the vehicle is located in areas described above,
the tire pressure warning light may come on after
blinking 1 minute only in a particular area.
(2) Devices using similar radio frequencies are used in
the vehicle.
OK:
Facilities, or devices that use similar radio
frequencies are not located in the vicinity of
the vehicle.
HINT:
Radio frequency may be interrupted due to
surroundings or devices installed by the user.
NG
OK
(a) Set the tire pressure to the appropriate specified values.
Cold tire inflation pressure
(b) Make sure that the ignition switch is off.
(c) Connect the intelligent tester to the DLC3.
(d) Turn the ignition switch to the ON position.
(e) Select "TIREPRESS" by following the prompts displayed
on the intelligent tester.
TIRE PRESSURE:
1CHECK FREQUENCY RECEIVING CONDITION
CHECK IF ANY DEVICE IS INSTALLED BY
USER
2IDENTIFY TRANSMITTER CORRESPONDING TO DTC
Tire Size
kPa (kgf/cm2, psi)
P215/65R16
240 (2.4, 35)
P225/60R17
Tester Display Measurement Item/Range Normal Condition Diagnostic Note
TIREPRESS1ID1 tire inflation pressure (Absolute
pressure) /
min.: 100 kPa (1 kgf/cm
2, 14 psi)
max.: 449.35 kPa (4.5 kgf/cm2, 63 psi)Actual tire inflation pressureIf 100 kPa (1 kgf/cm
2, 14 psi) for
absolute pressure is displayed, the
data has not been received.*
TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEMTW–25
TW
INITIALIZATION
1. DESCRIPTION OF INITIALIZATION
(a) Perform initialization in the following cases:
• Before delivery of a new vehicle.
• After replacement of the tire pressure warning
ECU*.
• After replacement of the tire pressure warning
valve and transmitter.
• Specified tire pressure changes depending on
the size or type of the tire.
*: Perform initialization after the transmitter ID
registration is completed (See page TW-20).
(b) Before initialization
(1) Set the air pressure of all tires to the specified
value.
Cold tire inflation pressure
NOTICE:
Perform the tire pressure adjustment after
the vehicle has sufficiently cooled down. If
the vehicle is not sufficiently cooled down,
increase the air pressure by 20 to 30 kPa (0.2
to 0.3 kgf/cm
2, 2.9 to 4.3 psi) above the
specified value.
Tire Size
kPa (kgf/cm2, psi)
P215/65R16
240 (2.4, 35)
P225/60R17
