2007 TOYOTA SIENNA Service Repair Manual

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Page 2353 of 3000

TOYOTA SIENNA 2007 Service Repair Manual TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEMTW–35
TW
3. DIAGNOSIS SYSTEM
(a) DTCs (Normal mode)
(1) DTCs are memorized in the tire pressure
warning ECU and read by the blinks of the tire
pres

Page 2354 of 3000

TOYOTA SIENNA 2007 Service Repair Manual TW–36TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM
TW
*1: Comes on and goes off repeatedly at 0.5-second
intervals, and comes on after 1 minute.
*2: Comes on and goes off repeatedly at 0.125-se

Page 2355 of 3000

TOYOTA SIENNA 2007 Service Repair Manual TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEMTW–37
TW
DTC CHECK / CLEAR
1. DTC CHECK (USING SST CHECK WIRE)
(a) Check DTCs.
(1) Turn the ignition switch off.
(2) Using SST, connect terminals TC

Page 2356 of 3000

TOYOTA SIENNA 2007 Service Repair Manual TW–38TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM
TW
DATA LIST / ACTIVE TEST
1. DATA LIST
HINT:
Using the intelligent tester to read the DATA LIST allows
the values or states of switches, sens

TW–38TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM
TW
DATA LIST / ACTIVE TEST
1. DATA LIST
HINT:
Using the intelligent tester to read the DATA LIST allows
the values or states of switches, sensor, actuators and
other items to be read without removing any parts. This
non-intrusive inspection can be very useful because
intermittent conditions or signals may be discovered
before parts or wiring is disturbed. Reading the DATA
LIST information early in troubleshooting is one way to
save diagnostic time.
NOTICE:
In the table below, the values listed under "Normal
Condition" are reference values. Do not depend
solely on these reference values when deciding
whether a part is faulty or not.
(a) Make sure that the ignition switch is off.
(b) Connect the intelligent tester to DLC3.
(c) Turn the ignition switch to the ON position.
(d) Following the display on the intelligent tester, read
"DATA LIST".
Tester Display Measurement Item/Range Normal Condition Diagnostic Note
MODE STATUSTire pressure warning system mode/NORMAL
or REG 2nd or REG M or TESTNORMAL: Normal mode
TEST: Test mode-
MAIN TIRENumber of main tire ID to be registered/0, 1, 2,
3, 40 to 4 should be displayed -
VEHICLE SPDVehicle speed reading/min.: 0 km/h (0 mph),
max.: 255 km/h (158 mph)Actual vehicle speedSpeed indicated on the
combination meter
REGIT ID1 CODE
Registered ID1 code/min.: 0, max.: FFFFFFF
*1The ID No. registered in the
transmitter ID1 is displayed-
REGIT ID2 CODE
Registered ID2 code/min.: 0, max.: FFFFFFF
*1The ID No. registered in the
transmitter ID2 is displayed-
REGIT ID3 CODE
Registered ID3 code/min.: 0, max.: FFFFFFF
*1The ID No. registered in the
transmitter ID3 is displayed-
REGIT ID4 CODE
Registered ID4 code/min.: 0, max.: FFFFFFF
*1The ID No. registered in the
transmitter ID4 is displayed-
TRANS STATUS ID code transmission status/FINISH or NOW FINISH or NOW -
INITIAL SW Tire pressure warning reset switch/ON, OFFON: Switch on
OFF: Switch off-
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.
*2
TIREPRESS2ID2 tire inflation pressure (Absolute pressure) /
min.: 100 kPa (1 kgf/cm2, 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.
*2
TIREPRESS3ID3 tire inflation pressure (Absolute pressure) /
min.: 100 kPa (1 kgf/cm2, 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.
*2
TIREPRESS4ID4 tire inflation pressure (Absolute pressure) /
min.: 100 kPa (1 kgf/cm2, 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.
*2

Page 2357 of 3000

TOYOTA SIENNA 2007 Service Repair Manual TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEMTW–39
TW
HINT:
*1: Displayed only when the ID No. is not registered.
*2: It may take about 5 to 6 minutes until the values
are displayed. If the val

TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEMTW–39
TW
HINT:
*1: Displayed only when the ID No. is not registered.
*2: 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).
METER:
2. ACTIVE TEST
Using the intelligent tester to perform ACTIVE TEST
allows the meters, indicators and other items to be
operated without removing any parts. Performing
ACTIVE TEST early in troubleshooting is one way to
save diagnostic time. It is possible to display the DATA
LIST on the intelligent tester during ACTIVE TEST.
(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) Enter the following menus: DIAGNOSIS / OBD/
MOBD / METER / ACTIVE TEST.
METER:
TIRE TEMP1ID1 temperature in tire/min.: -50C (-58F),
max.: 205
C (401F)Actual tire temperatureIf -50
C (-58F) is displayed,
data has not been received.
TIRE TEMP2ID2 temperature in tire/min.: -50
C (-58F),
max.: 205
C (401F)Actual tire temperatureIf -50
C (-58F) is displayed,
data has not been received.
TIRE TEMP3ID3 temperature in tire/min.: -50
C (-58F),
max.: 205
C (401F)Actual tire temperatureIf -50
C (-58F) is displayed,
data has not been received.
TIRE TEMP4ID4 temperature in tire/min.: -50
C (-58F),
max.: 205
C (401F)Actual tire temperatureIf -50
C (-58F) is displayed,
data has not been received.
BATT VOLT1 ID1 battery voltage/OVER or LESS OVER -
BATT VOLT2 ID2 battery voltage/OVER or LESS OVER -
BATT VOLT3 ID3 battery voltage/OVER or LESS OVER -
BATT VOLT4 ID4 battery voltage/OVER or LESS OVER -
INITIAL SW INFOTire pressure warning reset switch setting
information/WITH or WITHOUTWITH or WITHOUT -
INIT THRESHOLD1ID1 initial threshold of low-pressure/min.: 0 kPa
(0 kgf/cm
2, 0 psi), max.: 637.5 kPa (6.4 kgf/cm2,
93 psi)Tire pressure after initialization -
INIT THRESHOLD2ID2 initial threshold of low-pressure/min.: 0 kPa
(0 kgf/cm
2, 0 psi), max.: 637.5 kPa (6.4 kgf/cm2,
93 psi)Tire pressure after initialization -
INIT THRESHOLD3ID3 initial threshold of low-pressure/min.: 0 kPa
(0 kgf/cm
2, 0 psi), max.: 637.5 kPa (6.4 kgf/cm2,
93 psi)Tire pressure after initialization -
INIT THRESHOLD4ID4 initial threshold of low-pressure/min.: 0 kPa
(0 kgf/cm
2, 0 psi), max.: 637.5 kPa (6.4 kgf/cm2,
93 psi)Tire pressure after initialization -
# CODES Number of DTCs recorded/min.: 0, max.: 255 Min.: 0, Max.: - - Tester Display Measurement Item/Range Normal Condition Diagnostic Note
Tester Display Measurement Item/Range Normal Condition Diagnostic Note
SPEED METERVehicle speed/Min.: 0 km/h (0 mph), Max.: 255
km/h (158 mph)Almost same as actual vehicle speed
(When driving)-
Tester Display Test Part Control Range Diagnostic Note
TIRE PRESS WARN Tire Pressure Warning LightTire Pressure Warning Light is
OFF/ONConfirm that the vehicle is
stopped with the engine idling

Page 2358 of 3000

TOYOTA SIENNA 2007 Service Repair Manual TW–40TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM
TW
DIAGNOSTIC TROUBLE CODE CHART
HINT:
If a trouble code is displayed during the DTC check, inspect
the circuit listed for that code. For deta

TW–40TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM
TW
DIAGNOSTIC TROUBLE CODE CHART
HINT:
If a trouble code is displayed during the DTC check, inspect
the circuit listed for that code. For details of each code, refer
to the relevant page listed under respective "DTC No." in the
DTC chart.
TIRE PRESSURE WARNING SYSTEM:
DTC Code Detection Item Trouble Area See page
C2111/11 Transmitter ID1 Operation Stop 1. Tire pressure warning valve
and transmitter
2. Tire pressure warning ECUTW-39
C2112/12 Transmitter ID2 Operation Stop 1. Tire pressure warning valve
and transmitter
2. Tire pressure warning ECUTW-39
C2113/13 Transmitter ID3 Operation Stop 1. Tire pressure warning valve
and transmitter
2. Tire pressure warning ECUTW-39
C2114/14 Transmitter ID4 Operation Stop 1. Tire pressure warning valve
and transmitter
2. Tire pressure warning ECUTW-39
C2121/21 No Signal from Transmitter ID1 1. Tire pressure warning valve
and transmitter
2. Tire pressure warning antenna
and receiver
3. Wire harness or connector
4. Tire pressure warning ECUTW-42
C2122/22 No Signal from Transmitter ID2 1. Tire pressure warning valve
and transmitter
2. Tire pressure warning antenna
and receiver
3. Wire harness or connector
4. Tire pressure warning ECUTW-42
C2123/23 No Signal from Transmitter ID3 1. Tire pressure warning valve
and transmitter
2. Tire pressure warning antenna
and receiver
3. Wire harness or connector
4. Tire pressure warning ECUTW-42
C2124/24 No Signal from Transmitter ID4 1. Tire pressure warning valve
and transmitter
2. Tire pressure warning antenna
and receiver
3. Wire harness or connector
4. Tire pressure warning ECUTW-42
C2141/41 Transmitter ID1 Error 1. Tire pressure warning valve
and transmitter
2. Tire pressure warning ECUTW-50
C2142/42 Transmitter ID2 Error 1. Tire pressure warning valve
and transmitter
2. Tire pressure warning ECUTW-50
C2143/43 Transmitter ID3 Error 1. Tire pressure warning valve
and transmitter
2. Tire pressure waning ECUTW-50
C2144/44 Transmitter ID4 Error 1. Tire pressure warning valve
and transmitter
2. Tire pressure warning ECUTW-50
C2165/65 Abnormal Temperature Inside ID1
Tire1. Tires
2. Tire pressure warning valve
and transmitter
3. Tire pressure warning ECUTW-54

Page 2359 of 3000

TOYOTA SIENNA 2007 Service Repair Manual TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEMTW–41
TW
C2166/66 Abnormal Temperature Inside ID2
Tire1. Tires
2. Tire pressure warning valve
and transmitter
3. Tire pressure warning ECUTW-54
C21

Page 2360 of 3000

TOYOTA SIENNA 2007 Service Repair Manual BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEMBC–9
BC
PROBLEM SYMPTOMS TABLE
If there are no DTCs output but the problem still occurs,
check the circuits for each problem symptom in the order
given in

BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEMBC–9
BC
PROBLEM SYMPTOMS TABLE
If there are no DTCs output but the problem still occurs,
check the circuits for each problem symptom in the order
given in the table below and proceed to the relevant
troubleshooting page.
NOTICE:
When replacing the brake actuator assembly, sensor,
etc., turn the ignition switch off.
HINT:
Inspect the fuse and relay before investigating the suspected
areas as shown in the table below. Inspect each malfunction
circuit in numerical order for the corresponding symptom.
Anti-lock brake system:
Symptom Suspected Area See page
ABS does not operate1. Check the DTC again and make sure that the normal
system code is output.BC-10
2. IG power source circuitBC-37
3. Front speed sensor circuitBC-17
4. Rear speed sensor circuitBC-23
5. Check the brake actuator with the intelligent tester. If
abnormal, check the hydraulic circuit for leakage.BC-183
6. If the symptoms still occur even after the above circuits in
suspected areas have been inspected and proved to be
normal, replace the brake actuator assembly.BC-184
ABS does not operate efficiently1. Check the DTC again and make sure that the normal
system code is output.BC-10
2. Front speed sensor circuitBC-17
3. Rear speed sensor circuitBC-23
4. Stop light switch circuitBC-41
5. Check the brake actuator with intelligent tester. If abnormal,
check that hydraulic circuit for leakage.BC-183
6. If the symptoms still occur even after the above circuits in
suspected areas have been inspected and proved to be
normal, replace the brake actuator assembly.BC-184
ABS warning light abnormal (Remains on)1. ABS warning light circuitBC-47
2. Brake actuator assemblyBC-184
ABS warning light abnormal (Does not come on)1. ABS warning light circuitBC-50
2. Brake actuator assemblyBC-184
BRAKE warning light abnormal (Remains on)1. BRAKE warning light circuitBC-52
2. Brake actuator assemblyBC-184
BRAKE warning light abnormal (Does not come on)1. BRAKE warning light circuitBC-59
2. Brake actuator assemblyBC-184
DTC check cannot be done1. Check the DTC again and make sure that the normal
system code is output.BC-10
2. TC and CG terminal circuitBC-61
3. If the symptoms still occur even after the above circuits in
suspected areas have been inspected and proved to be
normal, replace the brake actuator assembly.BC-184
Test mode (Signal check) cannot be done1. TS and CG terminal circuitBC-64
2. Brake actuator assemblyBC-184

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