TOYOTA SEQUOIA 2001 Service Repair Manual

± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
DI±849
1043 Author: Date:
2005 SEQUOIA (RM1146U)
5 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.

Register the transmitter ID after replacement and then set the tire pressure to the specified value.
NG Go to step 11.
OK
Replace tire pressure monitor valve sub±
assy (See page SA±13).
6 Identify transmitter corresponding to DTC (See page DI±881).
NEXT
7 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
8 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 onto the wheel, read and write down its trans-
mitter ID.
NEXT

F19326
DATA LIST:
DI±850
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
1044 Author: Date:
2005 SEQUOIA (RM1146U)
9 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
10 Check DTC (See page DI±820).
CHECK:
Check for a DTC.
OK:
DTC is not output.
NG Go to step 11.
OK
End
11 Replace tire pressure monitor receiver assy (See page SA±13).
HINT:
Perform the inspection using parts from a normal vehicle when possible.
NEXT

± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
DI±851
1045 Author: Date:
2005 SEQUOIA (RM1146U)
12 Check DTC (See page DI±820).
CHECK:
Check for a DTC.
OK:
DTC is not output.
NG Replace tire pressure monitor ECU
(See page SA±20).
OK
End

DI±852
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
1046 Author: Date:
2005 SEQUOIA (RM1146U)
DTC C2171/71 Transmitter ID Not Registered
CIRCUIT DESCRIPTION
This DTC is output when an transmitter ID cannot be registered.
DTC No.DTC Detecting ConditionTrouble Area
C2171/71Transmitter ID code is not registered.
(When an ID code is unregistered for 51 minutes or more.)
Tire pressure monitor ECU
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 Registration of transmitter ID
(See page DI±805).
A
2 Clear DTC (See page DI±820).
NEXT
DIDKB±01

± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
DI±853
1047 Author: Date:
2005 SEQUOIA (RM1146U)
3 Check DTC (See page DI±820).
CHECK:
Check for a DTC.
OK:
DTC C2171/71 is not output.
NG Replace tire pressure monitor ECU
(See page SA±20).
OK
4 Confirm that ID registration is complete.
PREPARATION:
Perform the ºCONFIRMATION OF TRANSMITTER ID REGISTRATIONº procedure.
(Refer to step 4 of REGISTRATION on page DI±805).
CHECK:
Confirm that the transmitter ID is registered.
NEXT
End

DI±854
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
1048 Author: Date:
2005 SEQUOIA (RM1146U)
DTC C2176/76 Receiver error
CIRCUIT DESCRIPTION
This DTC is output when signals from the tire pressure monitor receiver stop.
DTC No.DTC Detecting ConditionTrouble Area
C2176/76
DTC is stored when either of the following is detected:

Malfunction in tire pressure monitor ECU internal circuit.

Terminal RF5V is shorted to ground.
Tire pressure monitor receiver assy

Tire pressure monitor ECU

Wire harness
DIDKC±01

F19172
Tire Pressure
Monitor ECU
IG
GND T17
11 Sub J/B No. 3
B±R
1FI18
Ignition SW
2
AM1 4
BatteryT172
8
3A
AA J37
J/C
B±R
IG11 Instrument Panel J/B
ECU±IG
12T17 T17T17
GND2 RDA
RF5V
GNDRDA+5V
1
45 T19 Tire Pressure
Monitor Receiver
BR±RVL
BD2 BD2 BD2
5
B±R
W±L8
7
16 J30H
J30I
J30JJ29A
J29B
J29C
BR±RVL
BR±RVL
8
3C
1C4
B±Y
1L1Instrument Panel J/B
AM1
1C6
W
ALT F10
Fusible Link BlockInstrument Panel J/B
1F10
1H1
W±B W±B
A
J8
J/C
IE 4 3J/C
5 8
B
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
DI±855
1049 Author: Date:
2005 SEQUOIA (RM1146U)
WIRING DIAGRAM

F19137
Tire Pressure Monitor Receiver Assy:
T19
+5V
GND
DI±856
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
1050 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 Inspect tire pressure monitor receiver assy.
PREPARATION:
(a) Disconnect the tire pressure monitor receiver assy T19
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
T19±4 (GND) ±
T19±5 (+5V)Ignition Switch ON4.5 to 5.5 V
NG Go to step 3.
OK

F19136
Tire Pressure Monitor ECU:
T17
RDA
F19137
Tire Pressure Monitor Receiver Assy:
T19
RDA
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
DI±857
1051 Author: Date:
2005 SEQUOIA (RM1146U)
2 Check harness and connector (Tire pressure monitor receiver assy ± Tire pres-
sure monitor ECU).
PREPARATION:
Disconnect the tire pressure monitor receiver assy T19 connec-
tor and tire pressure monitor ECU T17 connector.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionSpecified Condition
T17±7 (RDA) ± T19±1 (RDA)Below 1 W
OK Go to step 5.
NG

F19136
Tire Pressure Monitor ECU:
T17
RF5V
GND2RDA
F19137
Tire Pressure Monitor Receiver Assy:
T19
+5V
GNDRDA
DI±858
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
1052 Author: Date:
2005 SEQUOIA (RM1146U)
3 Check harness and connector (Tire pressure monitor receiver assy ± Tire pres-
sure monitor ECU).
PREPARATION:
Disconnect the tire pressure monitor receiver assy T19 connec-
tor and tire pressure monitor ECU T17 connector.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionSpecified Condition
T17±7 (RDA) ± T19±1 (RDA)Below 1 W
T17±8 (RF5V) ± T19±5 (+5V)Below 1 W
T17±16 (GND2) ± T19±4 (GND)Below 1 W
T17±7 (RDA) ± Body ground10 kW or higher
T17±8 (RF5V) ± Body ground10 kW or higher
T17±16 (GND2) ± Body ground10 kW or higher
NG Repair or replace harness or connector.
OK
4 Check power source circuit (See page DI±878).
NG Repair or replace power source circuit.
OK
5 Replace tire pressure monitor receiver assy (See page SA±13).
HINT:
Perform the inspection using parts from a normal vehicle when possible.
NEXT