2001 TOYOTA SEQUOIA Page 18

DI±588
± DIAGNOSTICSAUTOMATIC TRANSMISSION
782 Author: Date:
2005 SEQUOIA (RM1146U)
DTC P0711 Transmission Fluid Temperature Sensor ºAº
Performance
CIRCUIT DESCRIPTION
See page DI±582.
DTC No.DTC Detection ConditionTrouble Area
P0711
Both (a) and (b) are detected: (2±trip detection logic)
(a) Intake air and engine coolant temps. are more than ±20°C
(±4F) at engine start
(b) After normal driving for over 22 min. and 9 km (6 mile) or
more, ATF temp. is less than 10°C (50F)

Transmission wire (ATF temperature sensor No.1)
MONITOR DESCRIPTION
This DTC indicates that there is a problem with output from the automatic transmission fluid (ATF) tempera-
ture sensor and that the sensor itself is defective. The ATF temperature sensor converts the ATF tempera-
ture to an electrical resistance value. Based on the resistance, the ECM determines the ATF temperature
and detects an open or short in the ATF temperature circuit or a fault in the ATF temperature sensor.
After running the vehicle for a certain period, the ATF temperature should increase. If the ATF temperature
is below 20C (68F) after running the vehicle for a certain period, the ECM interprets this as a fault, and
turns on the MIL.
MONITOR STRATEGY
Related DTCsP0711ATF temperature sensor/Rationality check
Required sensors/ComponentsATF temperature sensor (TFT sensor)
Frequency of operationContinuous
Duration3 sec.
MIL operation2 driving cycles
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The monitor will run whenever this DTC is
not present.See page DI±545
TFT (transmission fluid temperature) sen-
sor circuitNot circuit malfunction
ECT (Engine coolant temperature) sensor
circuitNot circuit malfunction
IAT (Intake air temperature) sensor circuitNot circuit malfunction
Time after engine start21 min. and 40 sec.
Driving distance after engine start9 km (5.6 mile) or more±
IAT (12 sec. after engine start)±10°C (14°F) or more±
ECT (12 sec. after engine start)±10°C (14°F) or more±
DIDJ7±01

± 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.

DI±590
± DIAGNOSTICSAUTOMATIC TRANSMISSION
784 Author: Date:
2005 SEQUOIA (RM1146U)
1 Check other DTCs output (in addition to DTC P0711).
PREPARATION:
(a) Turn the ignition switch off.
(b) Connect the OBD II scan tool or hand±held tester to the DLC3.
(c) Turn the ignition switch to the ON position.
(d) Turn on the tester.
(e) Select the item ºDIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODESº.
CHECK:
Read the DTCs using the OBD II scan tool or the hand±held tester.
RESULT:
Display (DTC output)Proceed to
Only ºP0711º is outputA
ºP0711º and other DTCsB
HINT:
If any other codes besides ºP0711º are output, perform troubleshooting for those DTCs first.
B Go to DTC chart (See page DI±573).
A
2 Check transmission fluid level (See page DI±524).
OK:
Automatic transmission fluid level is correct.
NG Add fluid
(See page DI±524).
OK
Replace the transmission wire (ATF tempera-
ture sensor) (See page AT±7).

DI±592
± DIAGNOSTICSAUTOMATIC TRANSMISSION
786 Author: Date:
2005 SEQUOIA (RM1146U)
MONITOR DESCRIPTION
This DTC indicates that pulse is not output from the speed sensor NT (Turbine (input) speed sensor ) or is
output only little. The NT terminal of the ECM detects the revolving signal from the speed sensor (NT) (input
RPM). The ECM outputs a gearshift signal comparing the
input speed sensor (NT) with the output speed
sensor (SP2).
While the vehicle is operating in the 4th or 5th gear position in the shift position of D, if the input shaft revolu-
tion is less than 300 rpm
*1 although the output shaft revolution is more than 1000 rpm or more*2, the ECM
detects the trouble, illuminates the MIL and stores the DTC.
*1: Pulse is not output or is irregularly output.
*2: The vehicle speed is approx. 50 km/h (31 mph) or more.
MONITOR STRATEGY
Related DTCsP0717Speed sensor (NT)/Verify pulse input
Rid /C tMainSpeed sensor (NT)Required sensors/ComponentsSubSpeed sensor (NO)
Frequency of operationContinuous
Duration5 sec.
MIL operationImmediate
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The monitor will run whenever this DTC is
not present.See page DI±545
Shift changeShift change is completed and before starting next shift change operation
ECM selected gear4th or 5th
Output shaft rpm1,000 rpm or more±
NSW switchOFF
R switchOFF
L switchOFF
EngineRunning
Ignition switchON
StarterOFF
TYPICAL MALFUNCTION THRESHOLDS
Detection criteriaThreshold
Sensor signal rpmLess than 300 rpm
COMPONENT OPERATING RANGE
ParameterStandard value
Speed sensor (NT)Input speed is equal to engine speed when lock±up ON.

D14164OK NG
5.4 N´m
(55 kgf´cm, 48 in.´lbf)
No Clearance
D14165
Sensor Side:
(Connector Front View):
21 O1
DI±594
± DIAGNOSTICSAUTOMATIC TRANSMISSION
788 Author: Date:
2005 SEQUOIA (RM1146U)
1 Inspect speed sensor installation.
PREPARATION:
Jack up the vehicle.
CHECK:
Check the speed sensor (NT) installation.
OK:
The installation bolt is tightened properly and there is
no clearance between the sensor and transmission
case.
Torque: 5.4 N´m (55 kgf´cm, 48 in.´lbf)
NG Replace speed sensor NT (See page AT±5).
OK
2 Inspect speed sensor NT.
PREPARATION:
Disconnect the speed sensor connector from the transmission.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionSpecified Condition
20 C (68 F)
1 ± 2560 to 680 W
NG Replace speed sensor NT (See page AT±5).
OK

D14166
ECM:
NT+NT±E8E7E6E5E4
± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±595
789 Author: Date:
2005 SEQUOIA (RM1146U)
3 Check harness and connector (ECM ± speed sensor NT).
PREPARATION:
(a) Connect the speed sensor connector.
(b) Disconnect the ECM connector.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionSpecified Condition
20C (68F)
E7 ± 35 (NT+) ± E7 ± 27 (NT±)560 to 680 W
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionSpecified Condition
E7 ± 35 (NT+) ± Body ground10 kW or higher
E7 ± 27 (NT±) ± Body ground=
NG Repair or replace the harness or connector
(See page IN±35).
OK
Replace the ECM (See page SF±80).

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

D14164OK NG
5.4 N´m
(55 kgf´cm, 48 in.´lbf)
No Clearance
DI±598
± DIAGNOSTICSAUTOMATIC TRANSMISSION
792 Author: Date:
2005 SEQUOIA (RM1146U)
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 (SP2)
Output shaft Speed/
min.: 0 km/h (0 mph)
max.: 255 km/h (158 mph)Vehicle stopped: 0 km/h (0 mph)
[HINT]
Equal to vehicle speed
HINT:

SPD (SP2) is always 0 while driving:
Open or short in the sensor or circuit.

SPD (SP2) 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.
1 Inspect speed sensor installation.
PREPARATION:
Jack up the vehicle.
CHECK:
Check the speed sensor (SP2) installation.
OK:
The installation bolt is tightened properly and there is
no clearance between the sensor and transmission
case.
Torque: 5.4 N´m (55 kgf´cm, 48 in.´lbf)
NG Replace speed sensor SP2 (See page AT±5).
OK