TOYOTA SEQUOIA 2001 Service Repair Manual

F13970
ECU±IG Instrument
Panel J/B:
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
DI±879
1073 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
NOTICE:
It is necessary to register an ID code after replacing the tire pressure monitor valve sub±assy and/or
the tire pressure monitor ECU (see page DI±805).
1 Inspect battery.
CHECK:
Check the battery voltage.
OK:
Voltage: 11 to 14 V
NG Check and repair charging system.
(See page CH±1)
OK
2 Inspect fuse (ECU±IG).
PREPARATION:
Remove the ECU±IG fuse from the instrument panel J/B.
CHECK:
Check continuity of the ECU±IG fuse.
OK:
Continuity
NG Check for a short in all harness and connector
connected to fuse and replace fuse.
OK

F19136
Tire Pressure Monitor ECU:
IG
T17
F19136
Tire Pressure Monitor ECU:
T17
GND
DI±880
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
1074 Author: Date:
2005 SEQUOIA (RM1146U)
3 Inspect tire pressure monitor ECU (IG terminal voltage).
PREPARATION:
(a) Disconnect the tire pressure monitor ECU T17 connector.
(b) Turn the ignition switch to the ON position.
CHECK:
Measure the voltage according to the value(s) in the table be-
low.
OK:
Tester ConnectionConditionSpecified Condition
T17±2 (IG) ± Body groundIgnition Switch ON10 to 14 V
NG Repair or replace harness or connector
(IG circuit).
OK
4 Check harness and connector (Tire pressure monitor ECU ± Body ground).
PREPARATION:
Disconnect the tire pressure monitor ECU T17 connector.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionSpecified Condition
T17±11 (GND) ± Body groundBelow 1 W
NG Repair or replace harness or connector
(GND circuit).
OK
Replace tire pressure monitor ECU
(See page SA±20).

± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
DI±881
1075 Author: Date:
2005 SEQUOIA (RM1146U)
Identify transmitter (Error in present)
HINT:

Refer to IDENTIFY TRANSMITTER (ERROR IN PRESENT) if the DTC is output currently. Refer to
IDENTIFY TRANSMITTER (ERROR IN PAST) if a previously output DTC is not output now. Even when
DTCs C2165/65 to C2169/69 are output both as present and past codes, refer to IDENTIFY TRANS-
MITTER (ERROR IN PAST).

DTCs relevant to the transmitters are corresponding to each transmitter ID. It is impossible to identify
which tire is malfunctioning according to each transmitter ID. Therefore the following procedures must
be followed to confirm the ID No. and tire location.
INSPECTION PROCEDURE
1 Set the pressure of all tires to the specified value.
Tire sizeFrontRearSpare
P245 / 70 R 16220 kPa (2.2 kgf/cm2, 32 psi)240 kPa (2.4 kgf/cm2, 35 psi)240 kPa (2.4 kgf/cm2, 35 psi)
P265 / 70 R 16220 kPa (2.2 kgf/cm2, 32 psi)220 kPa (2.2 kgf/cm2, 32 psi)220 kPa (2.2 kgf/cm2, 32 psi)
P265 / 65 R 17220 kPa (2.2 kgf/cm2, 32 psi)220 kPa (2.2 kgf/cm2, 32 psi)220 kPa (2.2 kgf/cm2, 32 psi)
NEXT
2 Rapidly reduce the pressure of front right wheel to 120 kPa (1.2 kgf/cm2, 17 psi).
NEXT
DIDKI±01

DI±882
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
1076 Author: Date:
2005 SEQUOIA (RM1146U)
3 Using hand±held tester, check the tire pressure data of each wheel.
PREPARATION:
(a) Connect the hand±held tester to the DLC3.
(b) Turn the ignition switch to the ON position, and push the hand±held tester main switch ON.
(c) Select the item below in the DATA LIST, and read its value displayed on the hand±held tester.
TIRE PRESSURE:
ItemMeasurement item/
Range (Display)Normal ConditionDiagnostic Note
TIREPRESS1
ID1 tire inflation pressure/
min.: 0 kPa (0 kgfVcm2, 0 psi),
max.: 637.5 kPa (6.48 kgfVcm2,
92.2 psi)Actual tire inflation pressure±
TIREPRESS2
ID2 tire inflation pressure/
min.: 0 kPa (0 kgfVcm2, 0 psi),
max.: 637.5 kPa (6.48 kgfVcm2,
92.2 psi)Actual tire inflation pressure±
TIREPRESS3
ID3 tire inflation pressure/
min.: 0 kPa (0 kgfVcm2, 0 psi),
max.: 637.5 kPa (6.48 kgfVcm2,
92.2 psi)Actual tire inflation pressure±
TIREPRESS4
ID4 tire inflation pressure/
min.: 0 kPa (0 kgfVcm2, 0 psi),
max.: 637.5 kPa (6.48 kgfVcm2,
92.2 psi)Actual tire inflation pressure±
TIREPRESS5
ID5 tire inflation pressure/
min.: 0 kPa (0 kgfVcm2, 0 psi),
max.: 637.5 kPa (6.48 kgfVcm2,
92.2 psi)Actual tire inflation pressure±
CHECK:
Check the tire pressure data of each tire.
NEXT
4 Is any of the tire pressure data 120 kPa (1.2 kgf/cm2, 17 psi)?
No The detected DTC is for the front right wheel
transmitter.
Ye s
5 Rapidly reduce the pressure of front left wheel to 120 kPa (1.2 kgf/cm2, 17 psi).
NEXT

± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
DI±883
1077 Author: Date:
2005 SEQUOIA (RM1146U)
6 Using hand±held tester, check the tire pressure data of each wheel.
NEXT
7 Is there a wheel whose tire pressure newly becomes 120 kPa (1.2 kgf/cm2, 17
psi)?
No The detected DTC is for the front left wheel
transmitter.
Ye s
8 Rapidly reduce the pressure of rear right wheel to 120 kPa (1.2 kgf/cm2, 17 psi).
NEXT
9 Using hand±held tester, check the tire pressure data of each wheel.
NEXT
10 Is there a wheel whose tire pressure newly becomes 120 kPa (1.2 kgf/cm2, 17
psi)?
No The detected DTC is for the rear right wheel
transmitter.
Ye s
11 Rapidly reduce the pressure of rear left wheel to 120 kPa (1.2 kgf/cm2, 17 psi).
NEXT

DI±884
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
1078 Author: Date:
2005 SEQUOIA (RM1146U)
12 Using hand±held tester, check the tire pressure data of each wheel.
NEXT
13 Is there a wheel whose tire pressure newly becomes 120 kPa (1.2 kgf/cm2, 17
psi)?
No The detected DTC is for the rear left wheel trans-
mitter.
Ye s
The detected DTC is for the spare tire transmitter.

± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
DI±885
1079 Author: Date:
2005 SEQUOIA (RM1146U)
Identify transmitter (Error in past)
HINT:

Refer to IDENTIFY TRANSMITTER (ERROR IN PRESENT) if the DTC is output currently. Refer to
IDENTIFY TRANSMITTER (ERROR IN PAST) if a previously output DTC is not output now. Even when
DTCs C2165/65 to C2169/69 are output both as present and past codes, refer to IDENTIFY TRANS-
MITTER (ERROR IN PAST).

DTCs relevant to the transmitters are corresponding to each transmitter ID. It is impossible to identify
which tire is malfunctioning according to each transmitter ID. Therefore the following procedures must
be followed to confirm the ID No. and tire location.

The following are the procedures to identify which wheel's transmitter ID1 is resulting from when as-
suming that either of the DTCs C2141/41 (Transmitter ID1 error) or C2165/65 (Abnormal temperature
inside ID1 tire) is detected. Identify the corresponding transmitter using the same procedures when
DTCs C2142/42 to C2145/45, C2166/66 to C2169/69 are detected.
IDENTIFICATION PROCEDURE
1 Set the pressure of all tires to the specified value.
Tire sizeFrontRearSpare
P245 / 70 R 16220 kPa (2.2 kgf/cm2, 32 psi)240 kPa (2.4 kgf/cm2, 35 psi)240 kPa (2.4 kgf/cm2, 35 psi)
P265 / 70 R 16220 kPa (2.2 kgf/cm2, 32 psi)220 kPa (2.2 kgf/cm2, 32 psi)220 kPa (2.2 kgf/cm2, 32 psi)
P265 / 65 R 17220 kPa (2.2 kgf/cm2, 32 psi)220 kPa (2.2 kgf/cm2, 32 psi)220 kPa (2.2 kgf/cm2, 32 psi)
NEXT
2 Rapidly reduce the pressure of front right wheel to 120 kPa (1.2 kgf/cm2, 17 psi).
NEXT
3 Using hand±held tester, check the ID1 tire pressure data.
NEXT
4 Is ID1 tire pressure 120 kPa (1.2 kgf/cm2, 17 psi)?
Yes The ID1 is for the front right wheel transmitter.
No
DIDKJ±01

DI±886
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
1080 Author: Date:
2005 SEQUOIA (RM1146U)
5 Rapidly reduce the pressure of front left wheel to 120 kPa (1.2 kgf/cm2, 17 psi).
NEXT
6 Using hand±held tester, check the ID1 tire pressure data.
NEXT
7 Is ID1 tire pressure 120 kPa (1.2 kgf/cm2, 17 psi)?
Yes The ID1 is for the front left wheel transmitter.
No
8 Rapidly reduce the pressure of rear right wheel to 120 kPa (1.2 kgf/cm2, 17 psi).
NEXT
9 Using hand±held tester, check the ID1 tire pressure data.
NEXT
10 Is ID1 tire pressure 120 kPa (1.2 kgf/cm2, 17 psi)?
Yes The ID1 is for the rear right wheel transmitter.
No

± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
DI±887
1081 Author: Date:
2005 SEQUOIA (RM1146U)
11 Rapidly reduce the pressure of rear left wheel to 120 kPa (1.2 kgf/cm2, 17 psi).
NEXT
12 Using hand±held tester, check the ID1 tire pressure data.
NEXT
13 Is ID1 tire pressure 120 kPa (1.2 kgf/cm2, 17 psi)?
Yes The ID1 is for the rear left wheel transmitter.
No
The ID1 is for the spare tire transmitter.

F19795
A20
Airbag Sensor
AssemblySub J/B No.4Tire Pressure
Monitor ECU
T5 Translate ECU
D6
DLC3TC
E4P±B P±B
TC
P±B
13
TC
TCP±B
GT17
4D5
1A94A5
4C
5 4E5 ECM
23
4B
5
CG4
J43
J/CO
15
1F
O 15A
IGA12
TC
Instrument Panel J/BP±B DI±888
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
1082 Author: Date:
2005 SEQUOIA (RM1146U)
Tc and CG Terminal Circuit
CIRCUIT DESCRIPTION
DTC output mode is set by connecting terminals TC and CG of the DLC3.
The DTCs are indicated by blinking of the tire pressure warning lamp.
WIRING DIAGRAM
HINT:
When each warning lamp stays blinking, a ground short in the wiring of terminal TC of the DLC3 or an internal
ground short in each ECU is suspected.
DIDKK±01