Page 936 of 3115
- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-415
608 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC P0711 Transmission Fluid Temperature Sensor ºAº
Performance
CIRCUIT DESCRIPTION
The ATF temperature sensor converts fluid temperature into a resistance value which is input into the ECM.
DTC No.DTC Detecting ConditionTrouble Area
P0711
(A) Both (a) and (b) are detected: (2-trip detection logic)
(a) Intake air and engine coolant temps. are more than -10°C
(14°F) at engine start
(b) After normal driving for over 20 min. and 9 km (6 mile) or
more, ATF temp. is less than 20°C (68°F)
(B) After 17 min. of engine start, the ATF temp. is 110°C
(230°F) or more (2-trip detection logic).
Open or short in ATF temperature sensor No. 1 circuit
ATF temperature sensor No. 1
ECM
MONITOR DESCRIPTION
The ATF temperature sensor converts the ATF temperature to an electrical resistance value. Based on the
resistance, the ECM determines the ATF temperature and detects an opens or shorts in the ATF temperature
circuit or a fault of the ATF temperature sensor.
After running the vehicle for a certain period, the ATF temperature should increase. If the ATF temperature
is below 10C (50F) after running the vehicle for a certain period, the ECM interprets this as a fault, and
turns on the MIL.
When the ATF temperature is 110C (230F) or more after 17 minutes of engine cold start, the ECM also
determines this as a fault, turns on the MIL, and stores the DTC.
MONITOR STRATEGY
Related DTCsP0711ATF temperature sensor/Rationality check
Required sensors/ComponentsATF temperature sensor
Frequency of operationContinuous
Duration3 sec.
MIL operation2 driving cycles
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The monitor will run whenever the follow-
ing DTCs are not present.See page DI-361
ATF Temperature sensor ºAº circuit
ECT (Engine coolant temperature) sensor
circuitThere is no malfunction in the circuit shown on the left.
IAT (Intake air temperature) sensor circuit
Time after engine start18 min. and 20 sec. or more-
ECT-15°C (5°F) or more-
Driving distance after engine start9 km (6 mile) or more-
IAT (12 sec. after engine start)-20°C (-4°F) or more-
ECT (12 sec. after engine start)-20°C (-4°F) or more-
DIC30-01
Page 937 of 3115
DI-416
- DIAGNOSTICSAUTOMATIC TRANSMISSION
609 Author: Date:
2004 LAND CRUISER (RM1071U)
TYPICAL MALFUNCTION THRESHOLDS
Detection criteriaThreshold
ATF Temperature
Less than 10°C (50°F)
(ATF temperature = -10°C (14°F) at engine start)
(Conditions vary with ATF temperature at engine start)
COMPONENT OPERATING RANGE
ParameterStandard value
ATF temperature sensorAtmospheric temperature to approx. 130°C (266°F)
WIRING DIAGRAM
See page DI-410.
INSPECTION PROCEDURE
1 Check other DTCs output (in addition to DTC P0711).
PREPARATION:
(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) 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 is output, perform the troubleshooting for those DTCs first.
B Go to relevant DTC chart (See page DI-389).
A
Page 938 of 3115
- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-417
610 Author: Date:
2004 LAND CRUISER (RM1071U)
2 Check transmission fluid level (See page DI-361).
NG Add fluid.
OK
Replace the transmission wire (ATF tempera-
ture sensor).
Page 939 of 3115
D05982
Drum
Speed Sensor NT
DI-418
- DIAGNOSTICSAUTOMATIC TRANSMISSION
611 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC P0717 Input Speed Sensor Circuit No Signal
CIRCUIT DESCRIPTION
The speed sensor NT detects the rotation speed of the input
shaft from the rotation of the drum. Its construction is the same
as that of the speed sensor SP2.
By comparing the speed sensor NT signal and speed sensor
SP2 signal, the ECM detects the shift timing of the gears and
appropriately controls the engine torque and hydraulic pres-
sure in response to various conditions, thus providing smooth
gear shift.
DTC No.DTC Detection ConditionTrouble Area
P0717
All conditions below are detected for 5 secs. or more
(1-trip detection logic)
(a) Gear change not being performed
(b) Gear position: 1st, 2nd, 3rd, 4th or 5th
(c) T/M input shaft rpm: 300 rpm or less
(d) T/M output shaft rpm: 1,000 rpm or more
(e) Park/neutral position switch: OFF
(f) Shift solenoid valves, park/neutral posotion switch and ve-
hicle speed sensor are in normal operation
Open or short in speed sensor NT circuit
Speed sensor NT
ECM
Automatic transmission assembly
MONITOR DESCRIPTION
The input speed sensor detects the transmission input shaft speed. The ECM determines the gear shift tim-
ing based on a comparison of the input speed sensor (input shaft speed) with the output speed sensor (out-
put shaft speed).
When the output shaft speed is higher then the expected value and the input shaft speed is 300 rpm or less
while running with the shift in the D position, the ECM will conclude that there is malfunction of the input tur-
bine speed sensor (NT). The ECM will illuminate the MIL and a DTC is set.
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
DIB35-02
Page 940 of 3115
D12760
NT+
NT-WL
E635 E627
1
2 T17 Turbine Speed Sensor
WL
EB2
EB25 10ECM
- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-419
612 Author: Date:
2004 LAND CRUISER (RM1071U)
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The monitor will run whenever the follow-
ing DTCs are not present.See page DI-361
Shift changeShift change is completed and before starting next shift change operation
Transmission Shift position4th or 5th
Output shaft rpm1,000 rpm or more-
NSW switchOFF
R switchOFF
L switchOFF
EngineRunning
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.
WIRING DIAGRAM
Page 941 of 3115
D12741
Magnet1 2
DI-420
- DIAGNOSTICSAUTOMATIC TRANSMISSION
613 Author: Date:
2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
1 Check speed sensor NT.
PREPARATION:
Remove the speed sensor NT.
CHECK:
(a) Measure the resistance between the sensor terminals.
Standard: 560 to 680 W at 20°C (68°F)
(b) Measure the voltage between the sensor terminals when
a magnet is put close to the front end of the sensor then
moved away quickly.
Standard: Sensor generates voltage intermittently
HINT:
The generated voltage is extremely low.
OK:
Standard
NG Replace speed sensor NT.
OK
2 Check harness and connector between ECM and speed sensor NT (See page
IN-36).
NG Repair or replace harness and connector.
OK
Check and replace the ECM (See page
IN-36).
Page 942 of 3115
D11986
D13175Speed Sensor SP2
Parking Gear (Timing Rotor)
- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-421
614 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC P0722 Output Speed Sensor Circuit No Signal
CIRCUIT DESCRIPTION
The speed sensor SP2 detects the rotation speed of the trans-
mission output shaft and sends signals to the ECM. The ECM
determines the vehicle speed based on these signals. An AC
voltage is generated in the speed sensor SP2 coil as the park-
ing gear mounted on the rear planetary gear assy rotates, and
this voltage is sent to the ECM. The parking gear on the rear
planetary gear is used as the timing rotor for this sensor.
The gear shift point and lock-up timing are controlled by the
ECM based on the signals from this vehicle speed sensor and
the throttle position sensor signal. If the speed sensor SP2 mal-
functions, the ECM uses input signals from the speed sensor
NT as a back-up signal.
DTC No.DTC Detection ConditionTrouble Area
P0722
All conditions below are detected 500 times or more continu-
ously (1-trip detection logic)
(a) No signal from speed sensor SP2 is input to ECM while 4
pulses of No. 1 vehicle speed sensor signal are sent
(b) Vehicle speed is 9 km/h (6 mph) or more for at least 4 sec.
(c) Park/neutral position switch is OFF.
(d) Transfer position is except neutral (4WD).
Open or short in speed sensor SP2 circuit
Speed sensor SP2
ECM
MONITOR DESCRIPTION
The output speed sensor 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 and throttle position sensor.
If the ECM detects no signal from the output shaft speed sensor even while the vehicle is moving, it will con-
clude that is a malfunction of the output speed sensor. The ECM will illuminate the MIL and store the 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
DIB36-02
Page 943 of 3115
D12761
2 1 V3 Vehicle Speed Sensor
(Electronically Controlled Transmission)
R
GSP2+
SP2-
34 E626ECM
E6 DI-422
- DIAGNOSTICSAUTOMATIC TRANSMISSION
615 Author: Date:
2004 LAND CRUISER (RM1071U)
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The monitor will run whenever the follow-
ing DTCs are not present.See page DI-361
Vehicle speed range (4 sec. or more)9 km/h (6 mph) or more-
NSW switchOFF
Transfer neutral switchOFF
TYPICAL MALFUNCTION THRESHOLDS
Detection criteriaThreshold
No pulse input during 4 vehicle speed sensor pulse input500 times or more
WIRING DIAGRAM
