2001 TOYOTA SEQUOIA terminal TC

DIDK4±01
D13491
DLC3:
CG TC
F19148
Combination Meter
Tire Pressure
Warning Lamp
F19128
ON0.25 sec.
OFF
0.25 sec.
0.5 sec.
1.5 sec.4.5 sec. 2.5 sec.
0.5 sec. ON
OFF Normal System Code:
Code 13 and 33:
1.5 sec.
Repeat
D05981DLC3
Hand±Held
Tester
DI±820
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
1014 Author: Date:
2005 SEQUOIA (RM1146U)
DTC CHECK / CLEAR
1. DTC CHECK (USING SST CHECK WIRE)
(a) Check DTCs.
(1) Using the SST, connect terminals TC and CG of
DLC3.
SST 09843±18040
(2) Turn the ignition switch to the ON position.
(3) Read and record any DTCs from the tire pressure
warning lamp on the combination meter. Refer to
the illustration on the left for examples of a normal
system code and codes 13 and 33.
HINT:

If the tire pressure warning lamp does not blink any DTCs
or the normal system code, inspect the tire pressure
warning lamp circuit or TC terminal circuit.
Trouble AreaSee page
Tire pressure warning lamp circuitDI±873
TC terminal circuitDI±888

If 2 or more malfunctions are indicated at the same time,
the lowest numbered DTC is displayed first.
(4) Refer to the Diagnostic Trouble Code Chart (see
page DI±825) for DTC information.
(5) After completing the check, turn the ignition switch
off and remove the SST from DLC3.
SST 09843±18040
2. DTC CHECK (USING HAND±HELD TESTER)
(a) Check DTCs.
(1) Connect the hand±held tester to the DLC3.
(2) Turn the ignition switch to the ON position.
(3) Read the DTCs following the prompts on the tester
screen.
HINT:
Refer to the hand±held tester operator's manual for further de-
tails.

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

F19884
Tire Pressure Warning Reset Switch
(harness side connector)
Tire Pressure Monitor ECU:T18
CALSW
T17
F19144
Tire Pressure Warning Reset Switch
ON
OFF2
1
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
DI±867
1061 Author: Date:
2005 SEQUOIA (RM1146U)
14 Check harness and connector (Tire pressure warning reset switch ± Tire pres-
sure monitor ECU).
PREPARATION:
Disconnect the tire pressure warning reset switch connector
T18 and tire pressure monitor ECU connector T17.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionSpecified Condition
T17±10 (CALSW) ± T18±1Below 1 W
T17±10 (CALSW) ± Body ground10 kW or higher
NG Repair or replace harness or connector.
OK
15 Inspect tire pressure warning reset switch.
PREPARATION:
Disconnect the tire pressure warning reset switch connector.
CHECK:
Measure the resistance between terminals 1 and 2 of the tire
pressure warning reset switch when the tire pressure warning
switch is ON and OFF.
OK:
Switch ConditionSpecified Condition
ONBelow 1 W
OFF10 kW or higher
NG Replace tire pressure warning reset switch.
OK

F19138
Tire Pressure Monitor ECU:
SPD
GND
T17
9 to 14 V
0
Turn the wheel
DI±872
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
1066 Author: Date:
2005 SEQUOIA (RM1146U)
NG Repair or replace harness or connector.
OK
3 Inspect tire pressure monitor ECU.
PREPARATION:
Remove the tire pressure monitor ECU with connectors still
connected.
CHECK:
Check voltage.
(1) Shift the shift lever to neutral.
(2) Jack up one of the front wheels.
(3) Turn the ignition switch to the ON position.
(4) Measure the voltage between terminals SPD and
GND of the tire pressure monitor ECU when the
front wheel is turned slowly.
OK:
Voltage is generated intermittently.
HINT:
As the vehicle speed (wheel revolution speed) increases, a
cycle of the waveform narrows.
NG Check combination meter assy (Speed signal
circuit) (See page SA±20).
OK
Replace tire pressure monitor ECU
(See page SA±20).

F19174
Combination MeterTire Pressure
Monitor ECU
Engine Room J/B I18
Ignition SW IGN1
B±O
IG2 AM2 1C11
Battery 2
1H
T17 C5GR±L
Tire Pressure
B±R
B 56
54AM2 24
6IND Instrument Panel J/B
C620
2D1
2C1 1C3
1J7
F10
Fusible Link BlockInstrument Panel J/B
W±R
W±R
B
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
DI±873
1067 Author: Date:
2005 SEQUOIA (RM1146U)
Tire Pressure Warning Lamp Circuit
CIRCUIT DESCRIPTION
If the ECU detects trouble, the tire pressure warning lamp comes on and tire pressure monitor is cancelled
at the same time. At this time, the ECU records a DTC in memory.
Connect terminals Tc and CG of the DLC3 to make the tire pressure warning lamp blink and output the DTC.
WIRING DIAGRAM
DIDKF±01

F19144
Tire Pressure Warning Reset Switch
ON
OFF2
1
DI±876
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
1070 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
tire pressure monitor ECU (see page DI±805).
1 Check tire pressure warning reset switch function.
CHECK:
Perform the tire pressure warning reset switch test in TEST MODE PROCEDURE (see page DI±810).
OK:
Reset switch ON: Tire pressure warning lamp comes on.
Reset switch OFF: Tire pressure warning lamp blinks.
NG Go to step 2.
OK
End.
2 Inspect tire pressure warning reset switch.
PREPARATION:
Disconnect the tire pressure warning reset switch connector.
CHECK:
Measure the resistance between terminals 1 and 2 of the tire
pressure warning reset switch when the tire pressure warning
switch is ON and OFF.
OK:
Switch ConditionSpecified Condition
ONBelow 1 W
OFF10 kW or higher
NG Replace tire pressure warning reset switch.
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).

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