2001 TOYOTA SEQUOIA warning

DIDK7±01
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
DI±827
1021 Author: Date:
2005 SEQUOIA (RM1146U)
CIRCUIT INSPECTION
DTC C2111/11 Transmitter ID1 Operation Stop
DTC C2112/12 Transmitter ID2 Operation Stop
DTC C2113/13 Transmitter ID3 Operation Stop
DTC C2114/14 Transmitter ID4 Operation Stop
DTC C2115/15 Transmitter ID5 Operation Stop
CIRCUIT DESCRIPTION
The tire pressure monitor valve sub±assy stops transmitting signals when receiving specific signals. The
ECU stores the DTCs when the tire pressure monitor valve sub±assy receives the signals, for some reason,
and stops transmitting signals. As this is not a system malfunction, the DTCs are erased when signal trans-
mission is resumed.
HINT:
The electric wave is stopped at assembly plant, because the strength of the electric wave emitting from the
tire pressure sensing transmitter does not comply with the Japan Wireless Telegraphy Act.
DTC No.DTC Detecting ConditionTrouble Area
C2111/11
C2112/12
C2113/13
C2114/14
C2115/15
When any signal similar to the stop signal is received for
some reason, these DTCs will be output.
Tire pressure monitor valve sub±assy

Tire pressure monitor receiver assy

Tire pressure monitor ECU
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.

DI±828
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
1022 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 Forcibly transmit transmitter ID of all wheels.
PREPARATION:
Remove the valve cores of the all wheels to rapidly reduce the pressure of all tires to 120 kPa (1.2 kgf/cm2,
17 psi respectively).
HINT:
The transmitter ID can be transmitted forcibly by rapidly reducing tire air pressure.
NEXT
2 Check DTC (See page DI±820).
CHECK:
Check for a DTC.
OK:
DTC is not output.
OK Set tire pressure to normal value (Transmitter
stop condition is completely reset).
NG
3 Set tire pressure to normal value.
PREPARATION:
Set the tire pressure back to the specified normal 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

± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
DI±829
1023 Author: Date:
2005 SEQUOIA (RM1146U)
4 Forcibly transmit transmitter ID.
PREPARATION:
(a) Forcibly transmit the transmitter ID by performing the following:
(1) Set the tire pressure to the specified value.
(2) Rotate the tire 90 to 270 degrees.
(3) Rapidly reduce the pressure of all tires to 120 kPa (1.2 kgf/cm
2, 17 psi respectively).
(4) Perform the steps mentioned above to all tires including the spare tire.
NEXT
5 Check DTC (See page DI±820).
CHECK:
Check for a DTC.
OK:
DTC is not output.
HINT:
A system error is probable if NG. If any DTC other than C2111/21, C2112/22, C2113/23, C2114/24 and
C2115/25, is output, perform troubleshooting according to that DTC.
OK Set tire pressure to normal value (Transmitter
stop condition is completely reset).
NG
6 Check DTC (See page DI±820).
CHECK:
Check if DTCs C2111/21, C2112/22, C2113/23, C2114/24 and C2115/25 are all output.
No Go to step 12.
Ye s

F19136
Tire Pressure Monitor ECU:
T17
RF5V
GND2RDA
F19137
Tire Pressure Monitor Receiver Assy:
T19
+5V
GNDRDA
F19138
Tire Pressure Monitor ECU:
T17
RF5V
GND2
DI±830
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
1024 Author: Date:
2005 SEQUOIA (RM1146U)
7 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:
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
8 Inspect tire pressure monitor ECU.
PREPARATION:
(a) Connect 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±8 (RF5V) ±
T17±16 (GND2)Ignition Switch ON4.5 to 5.5 V
NG Check power source circuit
(See page DI±878).
OK

± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
DI±831
1025 Author: Date:
2005 SEQUOIA (RM1146U)
9 Replace tire pressure monitor receiver assy (See page SA±13).
NEXT
10 Check DTC (See page DI±820).
PREPARATION:
Clear the DTCs.
CHECK:
Check for a DTC.
OK:
DTC is not output.
OK End
NG
11 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

F19140
Example:
Front
A
B
DI±832
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
1026 Author: Date:
2005 SEQUOIA (RM1146U)
12 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
13 Identify transmitter corresponding to DTC (See page DI±881).
NEXT
14 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 13.
NEXT
15 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

F19139
Example:
Front
A
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
DI±833
1027 Author: Date:
2005 SEQUOIA (RM1146U)
16 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
17 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±834
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
1028 Author: Date:
2005 SEQUOIA (RM1146U)
DTC C2121/21 Transmitter ID1 Not Received
DTC C2122/22 Transmitter ID2 Not Received
DTC C2123/23 Transmitter ID3 Not Received
DTC C2124/24 Transmitter ID4 Not Received
DTC C2125/25 Transmitter ID5 Not Received
DTC C2181/81 Transmitter ID1 Not Received (Test Diagno-
sis)
DTC C2182/82 Transmitter ID2 Not Received (Test Diagno-
sis)
DTC C2183/83 Transmitter ID3 Not Received (Test Diagno-
sis)
DTC C2184/84 Transmitter ID4 Not Received (Test Diagno-
sis)
DTC C2185/85 Transmitter ID5 Not Received (Test Diagno-
sis)
DIDK8±01