2007 TOYOTA SIENNA Service Repair Manual

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Page 2297 of 3000

TOYOTA SIENNA 2007 Service Repair Manual TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEMTW–55
TW
(i) When all of the "TIREPRESS" data (ID1 to ID4) have
changed, identify the malfunctioning tire pressure
warning valve and transm

Page 2298 of 3000

TOYOTA SIENNA 2007 Service Repair Manual TW–56TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM
TW
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 tro

Page 2299 of 3000

TOYOTA SIENNA 2007 Service Repair Manual TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEMTW–57
TW
DESCRIPTION
Each tire pressure warning valve and transmitter measures the internal temperature of its tire as well as
tire pressure, and tr

Page 2300 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 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 ign

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

Page 2301 of 3000

TOYOTA SIENNA 2007 Service Repair Manual TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEMTW–59
TW
• When no "TIREPRESS" data has changed, reset
the tire pressure to the appropriate specified
value and rotate the tire 90 to 270

Page 2302 of 3000

TOYOTA SIENNA 2007 Service Repair Manual TW–60TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM
TW
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 tro

Page 2303 of 3000

TOYOTA SIENNA 2007 Service Repair Manual TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEMTW–61
TW
DESCRIPTION
The IDs of each tire pressure warning valve and transmitters are registered to the tire pressure warning
ECU.
When the IDs have

TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEMTW–61
TW
DESCRIPTION
The IDs of each tire pressure warning valve and transmitters are registered to the tire pressure warning
ECU.
When the IDs have never been registered, a DTC is output.
INSPECTION PROCEDURE
NOTICE:
• When replacing the tire pressure warning ECU, read the IDs stored in the ECU using the
intelligent tester and note 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 has been replaced.
(a) Make sure that the ignition switch is off.
(b) Connect the intelligent tester to the DLC3.
(c) Turn the ignition switch to the ON position.
(d) Select REGIT ID CODE by following the prompts
displayed on the intelligent tester.
TIRE PRESSURE:
OK:
The registered transmitter ID codes are displayed
on the intelligent tester screen.
NG
OK
(a) Register the transmitter IDs for all the wheels (See page
TW-20).
DTC C2171/71 Transmitter ID not Registered
DTC No. DTC Detection Condition Trouble Area
C2171/71Transmitter ID code is not registered. (When an ID
code is unregistered for 20 minutes or more)Tire pressure warning ECU
1CONFIRM REGISTRATION CONDITION (REGISTERED ID CODES)
Tester Display Measurement Item/Range Normal Condition Diagnostic Note
REGIT ID1 CODERegistered ID1 code/
min.: 0, max.: FFFFFF*The ID No. registered in the
transmitter ID1 is displayed*: Displayed only when the ID No.
is not registered.
REGIT ID2 CODERegistered ID2 code/
min.: 0, max.: FFFFFF*The ID No. registered in the
transmitter ID2 is displayed*: Displayed only when the ID No.
is not registered.
REGIT ID3 CODERegistered ID3 code/
min.: 0, max.: FFFFFF*The ID No. registered in the
transmitter ID3 is displayed*: Displayed only when the ID No.
is not registered.
REGIT ID4 CODERegistered ID4 code/
min.: 0, max.: FFFFFF*The ID No. registered in the
transmitter ID4 is displayed*: Displayed only when the ID No.
is not registered.
Go to step 2
REPLACE TIRE PRESSURE WARNING ECU (See page TW-87)
2PERFORM REGISTRATION (TRANSMITTER ID)

Page 2304 of 3000

TOYOTA SIENNA 2007 Service Repair Manual TW–62TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM
TW
NEXT
(a) Perform initialization (See page TW-23).
NEXT
(a) Make sure that the ignition switch is off.
(b) Connect the intelligent tester to

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