2001 TOYOTA SEQUOIA wiring diagram

± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±589
783 Author: Date:
2005 SEQUOIA (RM1146U)
TYPICAL MALFUNCTION THRESHOLDS
Detection criteriaThreshold
TFT (transmission fluid temperature)Less than 20°C (68°F)
(varies with TFT (transmission fluid temperature) at engine start)
WIRING DIAGRAM
See page DI±582.
INSPECTION PROCEDURE
HINT:
According to the DATA LIST displayed by the OBD II scan tool or hand±held tester, you can read the value
of the switch, sensor, actuator and so on without parts removal. Reading the DATA LIST as the first step of
troubleshooting is one method to shorten labor time.
(a) Warm up the engine.
(b) Turn the ignition switch off.
(c) Connect the OBD II scan tool or hand±held tester to the DLC3.
(d) Turn the ignition switch to the ON position.
(e) Push the ºONº button of the OBD II scan tool or the hand±held tester.
(f) When you use the hand±held tester:
Select the item ºDIAGNOSIS / ENHANCED OBD II / DATA LISTº.
(g) According to the display on the tester, read the ºDATA LISTº.
ItemMeasurement Item/
Range (display)Normal Condition
AT FLUID TEMP 1
ATF Temp. Sensor Value/
min.: ±40C (±40F)
max.: 215C (419F)
After Stall Test;
Approx. 80C (176F)

Equal to ambient temperature when cold soak
HINT:
When DTC P0712 is output and hand±held tester output is 150C (302F) or more, there is a short circuit.
When DTC P0713 is output and hand±held tester output is ±40C (±40F), there is an open circuit.
Measure the resistance between terminal THO1 (OT) and body ground.
Temperature DisplayedMalfunction
±40°C (±40°F)Open circuit
150°C (302°F) or moreShort circuit
HINT:
If a circuit related to the ATF temperature sensor becomes open, P0713 is immediately set (in 0.5 second).
When P0713 is set, P0711 cannot be detected.
It is not necessary to inspect the circuit when P0711 is set.

D14163
ECM
NT+
NT± 35
WB
1 2E7
E7 O1
O/D Direct Clutch Speed Sensor
(Input Speed Sensor NT)
E1 27
± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±593
787 Author: Date:
2005 SEQUOIA (RM1146U)
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
According to the DATA LIST displayed by the OBD II scan tool or hand±held tester, you can read the value
of the switch, sensor, actuator and so on without parts removal. Reading the DATA LIST as the first step of
troubleshooting is one method to shorten labor time.
(a) Warm up the engine.
(b) Turn the ignition switch off.
(c) Connect the OBD II scan tool or hand±held tester to the DLC3.
(d) Turn the ignition switch to the ON position.
(e) Push the ºONº button of the OBD II scan tool or the hand±held tester.
(f) When you use the hand±held tester:
Select the item ºDIAGNOSIS / ENHANCED OBD II / DATA LISTº.
(g) According to the display on the tester, read the ºDATA LISTº.
ItemMeasurement Item/
Range (display)Normal Condition
SPD (NT)Input Turbine Speed/
display: 50 r/min
[HINT]

Lock±up ON (After warming up the engine);
Input Turbine speed (NT) equal to the engine
speed.

Lock±up OFF (Idling at N position);
Input Turbine speed (NT) nearly equal to the en-
gine speed.
HINT:

SPD (NT) is always 0 while driving:
Open or short in the sensor or circuit.

SPD (NT) is always more than 0 and less than 300 rpm while driving the vehicle at 50 km/h (31 mph)
or more:
Sensor trouble, improper installation, or intermittent connection trouble of the circuit.

D14163
ECM
SP2+
SP2± 34
26
Y±R W±R
1 2E7
E7
E1 V2
Vehicle Speed Sensor (SP2)
± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±597
791 Author: Date:
2005 SEQUOIA (RM1146U)
MONITOR DESCRIPTION
The output speed sensor SP2 monitors the output shaft speed. The ECM controls the gearshift point and
the lock up timing based on the signals from the output speed sensor SP2 and throttle position sensor.
If the ECM detects no signal from the output shaft speed sensor SP2 even while the vehicle is moving, it
will conclude that is a malfunction of the output speed sensor SP2. The ECM will illuminate the MIL and set
a DTC.
MONITOR STRATEGY
Related DTCsP0722Speed sensor SP2/Verify pulse input
Required sensors/ComponentsSpeed sensor SP2
Frequency of operationContinuous
Duration500 output shaft revolution
MIL operationImmediate
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The monitor will run whenever this DTC is
not present.See page DI±545
Vehicle speed sensor pulse input4
Vehicle speed range (4 sec. or more)9 km/h (5.59 mph) or more±
NSW switchOFF
Battery voltage8 V or more±
Ignition switchON
StarterOFF
TYPICAL MALFUNCTION THRESHOLDS
Detection criteriaThreshold
Output speed sensor pulse inputNo input
WIRING DIAGRAM

± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±601
795 Author: Date:
2005 SEQUOIA (RM1146U)
WIRING DIAGRAM
See page DI±283.
INSPECTION PROCEDURE
1 Read value of DATA LIST (STP signal).
HINT:
According to the DATA LIST displayed by the OBD II scan tool or hand±held tester, you can read the value
of the switch, sensor, actuator and so on without parts removal. Reading the DATA LIST as the first step of
troubleshooting is one method to shorten labor time.
(a) Warm up the engine.
(b) Turn the ignition switch off.
(c) Connect the OBD II scan tool or hand±held tester to the DLC3.
(d) Turn the ignition switch to the ON position.
(e) Push the ºONº button of the OBD II scan tool or the hand±held tester.
(f) When you use the hand±held tester:
Select the item ºDIAGNOSIS / ENHANCED OBD II / DATA LISTº.
(g) According to the display on the tester, read the ºDATA LISTº.
Standard:
ItemMeasurement Item/
Range (display)Normal Condition
Stop Light SwitchStop light SW Status/
ON or OFF
Brake Pedal is depressed: ON

Brake Pedal is released: OFF
NOTICE:
In the table above, the conditions listed under ºNormal Conditionº are reference conditions. Do not
depend solely on these reference conditions when deciding whether a part is faulty or not.
OK:
Brake Pedal ConditionSpecified Condition
DepressedON
ReleasedOFF
NG Go to step 2.
OK
Go to step 3.

D14168
Electronically Controlled
Transmission Solenoid
E7ECM
L R±B19
18SL1+
SL1± 12
4 L R E1
SL1+
SL1±+B
CPU
E7 DI±604
± DIAGNOSTICSAUTOMATIC TRANSMISSION
798 Author: Date:
2005 SEQUOIA (RM1146U)
COMPONENT OPERATING RANGE
ParameterStandard value
Output signal dutyLess than 100%
WIRING DIAGRAM

D14168
Electronically Controlled
Transmission Solenoid
E7ECM
LG±BGR17
16SL2+
SL2± 11
3 V Y E1
SL2+
SL2±+B
CPU
E7 DI±632
± DIAGNOSTICSAUTOMATIC TRANSMISSION
826 Author: Date:
2005 SEQUOIA (RM1146U)
COMPONENT OPERATING RANGE
ParameterStandard value
Output signal dutyLess than 100%
WIRING DIAGRAM

D14170
E1
Electronically Controlled
Transmission SolenoidECM
11
E7S1
8 W
R
S1+B
CPU
DI±642
± DIAGNOSTICSAUTOMATIC TRANSMISSION
836 Author: Date:
2005 SEQUOIA (RM1146U)
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The monitor will run whenever these
DTCs are not present.See page DI±545
Range check (Low resistance)
Shift solenoid valve S1ON
Range check (High resistance)
Shift solenoid valve S1OFF
TYPICAL MALFUNCTION THRESHOLDS
Detection criteriaThreshold
Range check (Low resistance)
Shift solenoid valve S1 resistance8 W or less
Range check (High resistance)
Shift solenoid valve S1 resistance100 kW or more
COMPONENT OPERATING RANGE
ParameterStandard value
Shift solenoid valve S1Resistance: 11 to 15 W at 20°C (68°F)
WIRING DIAGRAM

D14170
E1
Electronically Controlled
Transmission SolenoidECM
10
E7S2
15 B
W±L
S2+B
CPU
± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±647
841 Author: Date:
2005 SEQUOIA (RM1146U)
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The monitor will run whenever these
DTCs are not present.See page DI±545
Range check (Low resistance)
Shift solenoid valve S2ON
Range check (High resistance)
Shift solenoid valve S2OFF
TYPICAL MALFUNCTION THRESHOLDS
Detection criteriaThreshold
Range check (Low resistance)
Shift solenoid valve S2 resistance8 W or less
Range check (High resistance)
Shift solenoid valve S2 resistance100 kW or more
COMPONENT OPERATING RANGE
ParameterStandard value
Shift solenoid valve S2Resistance: 11 to 15 W at 20°C (68°F)
WIRING DIAGRAM