TOYOTA SEQUOIA 2001 Service Repair Manual

± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
DI±839
1033 Author: Date:
2005 SEQUOIA (RM1146U)
9 Replace tire pressure monitor ECU and check DTC.
PREPARATION:
(a) Replace the tire pressure monitor ECU (see page SA±20).
(b) Clear the DTCs.
CHECK:
Check for a DTC.
OK:
DTC is not output.
NG Replace tire pressure monitor valve sub±assy
(See page SA±16).
OK
End
10 Set tire pressure to normal value.
PREPARATION:
Set the tire pressure of all wheels 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
11 Identify transmitter corresponding to DTC (See page DI±881).
NEXT

F19140
Example:
A
BFront
F19139
Example:
Front
A
DI±840
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
1034 Author: Date:
2005 SEQUOIA (RM1146U)
12 Interchange tires.
PREPARATION:
Interchange tire ºAº with a defective tire pressure monitor valve
sub±assy with tire ºBº with a normal one.
HINT:
If tire ºAº (left front ) is identified in step 11.
NEXT
13 Set tire pressure to normal value.
PREPARATION:
Set the tire pressure of all wheels 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
14 Forcibly transmit transmitter ID.
PREPARATION:
Remove the valve core of tire ºAº, rapidly reduce the tire pres-
sure and forcibly transmit the transmitter ID of the tire pressure
monitor valve sub±assy.
NEXT

± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
DI±841
1035 Author: Date:
2005 SEQUOIA (RM1146U)
15 Check DTC again (See page DI±820).
CHECK:
Check for a DTC.
OK:
DTC is not output.
HINT:

If a DTC is output, replace the identified tire pressure monitor valve sub±assy.

Before installing a new tire pressure monitor valve sub±assy, read and write down its transmitter ID.

Register the transmitter ID after replacement and then set the tire pressure to the specified value (see
page DI±805).
NG Replace tire pressure monitor valve sub±assy
(See page SA±16).
OK
Replace tire pressure monitor receiver assy
(See page SA±13).

DI±842
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
1036 Author: Date:
2005 SEQUOIA (RM1146U)
DTC C2141/41 Transmitter ID1 Error
DTC C2142/42 Transmitter ID2 Error
DTC C2143/43 Transmitter ID3 Error
DTC C2144/44 Transmitter ID4 Error
DTC C2145/45 Transmitter ID5 Error
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
C2141/41
C2142/42
C2143/43
C2144/44
C2145/45
If an ºERRORº signal is received 3 times consecutively, the
tire pressure monitor valve sub±assy will be judged as de-
fective and these DTCs will be output.
This will happen under the situations where the inflation
pressure is out of the specified range 0 to 637.5 kPa (0 to
6.48 kgf/cm
2, 0 psi to 92.2 psi), the temperature inside the
tire is out of the specified range ±40 to 215C (±40 to 419
F), or an error occurs in the tire pressure monitor valve
sub±assy, etc.

Tire pressure monitor valve sub±assy

Tire pressure monitor ECU

Tire pressure monitor receiver assy
HINT:
It is necessary to perform the procedure to identify the tire pressure monitor valve sub±assy that is malfunc-
tioning because it cannot be identified by the output DTC.
DIDK9±01

± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
DI±843
1037 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).
HINT:
Set the tire pressure to the specified value.
1 Check tire pressure warning lamp.
PREPARATION:
Turn the ignition switch to the ON position.
CHECK:
Check the tire pressure warning lamp.
RESULT:
Does not blinkA
Comes on and goes off repeatedly at 0.5 second intervalsB
B Go to step 5.
A
2 Identify transmitter corresponding to DTC (See page DI±881).
NEXT
3 Clear DTC (See page DI±820).
NEXT

DI±844
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
1038 Author: Date:
2005 SEQUOIA (RM1146U)
4 Check DTC (See page DI±820).
CHECK:
Check for a DTC.
OK:
DTC is not output.
HINT:

If the result is OK, replace the tire pressure monitor valve sub±assy specified in STEP 2.

Before installing a new tire pressure monitor valve sub±assy, read and write down its transmitter ID.

Register the transmitter ID after replacement and then set the tire pressure to the specified value (see
page DI±805).
NG Go to step 9.
OK
Replace tire pressure monitor valve sub±
assy (See page SA±16).
HINT:
Replace the identified tire pressure monitor valve sub±assy.
5 Identify transmitter corresponding to recorded DTC (See page DI±881).
NEXT
6 Replace tire pressure monitor valve sub±assy (See page SA±16).
PREPARATION:
Replace the identified tire pressure monitor valve sub±assy with a new one.
HINT:
Before installing a new tire pressure monitor valve sub±assy, read and write down its transmitter ID.
NEXT

F19326
DATA LIST:
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
DI±845
1039 Author: Date:
2005 SEQUOIA (RM1146U)
7 Registration of transmitter ID (See page DI±805).
PREPARATION:
(a) Confirm the transmitter ID on the DATA LIST.
(b) Register the transmitter ID for all wheels.
(c) Set the tire pressure 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
8 Check DTC (See page DI±820).
CHECK:
Check for a DTC.
OK:
DTC is not output.
NG Go to step 9.
OK
End
9 Replace tire pressure monitor receiver assy (See page SA±13).
HINT:
Perform the inspection using parts from a normal vehicle when possible.
NEXT

DI±846
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
1040 Author: Date:
2005 SEQUOIA (RM1146U)
10 Check DTC (See page DI±820).
PREPARATION:
Check for a DTC.
OK:
DTC is not output.
NG Replace tire pressure monitor ECU
(See page SA±20).
OK
End

± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
DI±847
1041 Author: Date:
2005 SEQUOIA (RM1146U)
DTC C2165/65 Abnormal Temperature Inside ID1 Tire
DTC C2166/66 Abnormal Temperature Inside ID2 Tire
DTC C2167/67 Abnormal Temperature Inside ID3 Tire
DTC C2168/68 Abnormal Temperature Inside ID4 Tire
DTC C2169/69 Abnormal Temperature Inside ID5 Tire
CIRCUIT DESCRIPTION
The tire pressure monitor valve sub±assy measures tire internal temperature as well as tire pressure, and
transmits the information to the tire pressure monitor receiver along with the transmitter ID. If the measured
temperature is out of the specified range, the tire pressure monitor ECU recognizes it as a malfunction, out-
puts DTCs, and blinks the tire pressure warning lamp.
DTC No.DTC Detecting ConditionTrouble Area
C2165/65
C2166/66
C2167/67
C2168/68
C2169/69
Temperature inside the tire exceeds 119C (246.2F) more
than once.
Tire pressure monitor valve sub±assy

Tire pressure monitor ECU

Tire pressure monitor receiver assy
HINT:
It is necessary to perform the procedure to identify the tire pressure monitor valve sub±assy that is malfunc-
tioning because it cannot be identified by the output DTC.
DIDKA±01

DI±848
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
1042 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).
HINT:
Set the tire pressure to the specified value.
1 Check tire pressure warning lamp.
PREPARATION:
Turn the ignition switch to the ON position.
CHECK:
Check the tire pressure warning lamp.
RESULT:
Does not blinkA
Comes on and goes off repeatedly at 0.5 second intervalsB
B Go to step 6.
A
2 Identify transmitter corresponding to DTC (See page DI±881).
NEXT
3 Adjust tire pressure 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
4 Clear DTC (See page DI±820).
NEXT