2001 TOYOTA HIGHLANDER automatic transmission fluid

05-950- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)
1140 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
TYPICAL ENABLING CONDITIONS
ALL:
Transmission rangeºDº
ECT (Engine coolant temperature)60°C (140°F) or more
TFT (Transmission fluid temperature)-20C (-4F) or more
TFT sensor circuitNot circuit malfunction
ECT sensor circuitNot circuit malfunction
Turbine speed sensor circuitNot circuit malfunction
Intermediate shaft speed sensor circuitNot circuit malfunction
Output speed sensor circuitNot circuit malfunction
Shift solenoid valve SL1 circuitNot circuit malfunction
Shift solenoid valve SL2 circuitNot circuit malfunction
Shift solenoid valve S4 circuitNot circuit malfunction
Electronic throttle systemNot circuit malfunction
OFF malfunction
ECM selected gear1st
Vehicle speed10 to 40 km/h (6.2 to 24.9 mph)
Throttle valve opening angle4.5% or more at engine speed 1,900 rpm
(Varies with engine speed)
ON malfunction (A)
ECM selected gear2nd
Vehicle speed10 km/h (6.2 mph) or more
Throttle valve opening angle4.5% or more at engine speed 1,900 rpm
(Varies with engine speed)
ON malfunction (B)
ECM lock-up commandOFF
ECM selected gear3rd or 4th
TYPICAL MALFUNCTION THRESHOLDS
Either of the following conditions is met: OFF malfunction, or ON malfunction (A) and (B)
2 detections are necessary per driving cycle:
1st detection; temporary flag ON
2nd detection; pending fault code ON
OFF malfunction
Input (turbine) speed/Intermediate shaft speed1.49 to 1.63
ON malfunction (A)
Input (turbine) speed/Intermediate shaft speed2.72 to 2.86
ON malfunction (B)
Engine speed - Input (tubine) speed250 rpm or more

05-956- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)
1146 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P0766 SHIFT SOLENOID ºDº PERFORMANCE
(SHIFT SOLENOID VALVE S4)
SYSTEM DESCRIPTION
The ECM uses signals from the vehicle speed sensor to detect the actual gear position (1st, 2nd, 3rd or O/D
gear).
Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical
problems of the shift solenoid valves and valve body.
DTC No.DTC Detecting ConditionTrouble Area
P0766The gear required by the ECM does not match the actual gear
when driving (2-trip detection logic)

Shift solenoid valve S4 remains open or closed

Valve body is blocked

Shift solenoid valve S4

Automatic transaxle (clutch, brake or gear etc.)

ECM
MONITOR DESCRIPTION
The ECM commands gear shifts by turning the shift solenoid valves ºON/OFFº. According to the input shaft
revolution, intermediate (counter) shaft revolution and output shaft revolution, the ECM detects the actual
gear position (1st, 2nd, 3rd or O/D gear position). When the gear position commanded by the ECM and the
actual gear position are not same, the ECM illuminates the MIL and stores the DTC.
MONITOR STRATEGY
Related DTCs
P0766:
Shift solenoid valve S4/ON malfunction
Shift solenoid valve S4/OFF malfunction
Required sensors/ComponentsShift solenoid valve S4, Speed sensor (NT), Speed sensor (NC), Crankshaft posi-
tion sensor (NE)
Frequency of operationContinuous
Duration1 sec.
MIL operation2 driving cycles
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
All:
Transmission rangeºDº
ECT (Engine coolant temperature)60°C (140°F) or more
TFT (Transmission fluid temperature)-20C (-4F) or more
TFT sensor circuitNot circuit malfunction
ECT sensor circuitNot circuit malfunction
Turbine speed sensor circuitNot circuit malfunction
Intermediate shaft speed sensor circuitNot circuit malfunction
Output speed sensor circuitNot circuit malfunction
Shift solenoid valve SL1 circuitNot circuit malfunction
Shift solenoid valve SL2 circuitNot circuit malfunction
Shift solenoid valve S4 circuitNot circuit malfunction
Electronic throttle systemNot circuit malfunction
05C11-19

- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E/U151F)05-1073
1263 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
TYPICAL ENABLING CONDITIONS
All:
Transmission rangeºDº
ECT (Engine coolant temperature)10C (50F) or more
TFT (Transmission fluid temperature)-20C (-4F) or more
TFT sensor circuitNot circuit malfunction
ECT sensor circuitNot circuit malfunction
Turbine speed sensor circuitNot circuit malfunction
Intermediate shaft speed sensor circuitNot circuit malfunction
Output speed sensor circuitNot circuit malfunction
Shift solenoid valve SL1 circuitNot circuit malfunction
Shift solenoid valve SL2 circuitNot circuit malfunction
Shift solenoid valve SL3 circuitNot circuit malfunction
Shift solenoid valve S4 circuitNot circuit malfunction
Shift solenoid valve SR circuitNot circuit malfunction
Shift solenoid valve DSL circuitNot circuit malfunction
OFF malfunction (A)
ECM selected gear5th
Throttle valve opening angle5% or more
Vehicle speed10 km/h (6.2 mph) or more
OFF malfunction (B)
ECM lock-up commandON
ECM selected gear3rd, 4th or 5th
Vehicle speed25 km/h (15.5 mph)
ON malfunction (A)
ECM lock-up commandOFF
ON malfunction (B)
ECM selected gear1st
Vehicle speedLess than 40 km/h (24.9 mph)
Throttle valve opening angle4.5% or more at engine speed 1,900 rpm
(Varies with engine speed)
ON malfunction (C)
ECM selected gear3rd
Throttle valve opening angle4.5% or more at engine speed 1,900 rpm
(Varies with engine speed)
ON malfunction (D)
ECM selected gear4th or 5th
Duration time from shift command of ECM15 sec. or more

05-960- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)
1150 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P0776 PRESSURE CONTROL SOLENOID ºBº
PERFORMANCE (SHIFT SOLENOID VALVE
SL2)
SYSTEM DESCRIPTION
The ECM uses signals from the vehicle speed sensor to detect the actual gear position (1st, 2nd, 3rd or O/D
gear).
Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical
problems of the shift solenoid valves and valve body.
DTC No.DTC Detecting ConditionTrouble Area
P0776The gear required by the ECM does not match the actual gear
when driving (2-trip detection logic)

Shift solenoid valve SL2 remains open or closed

Valve body is blocked

Shift solenoid valve SL2

Automatic transaxle (clutch, brake or gear etc.)

ECM
MONITOR DESCRIPTION
The ECM commands gear shifts by turning the shift solenoid valves ºON/OFFº. According to the input shaft
revolution, intermediate (counter) shaft revolution and output shaft revolution, the ECM detects the actual
gear position (1st, 2nd, 3rd or O/D gear position). When the gear position commanded by the ECM and the
actual gear position are not same, the ECM illuminates the MIL and stores the DTC.
MONITOR STRATEGY
Related DTCs
P0776:
Shift solenoid valve SL2/OFF malfunction
Shift solenoid valve SL2/ON malfunction
Required sensors/ComponentsShift solenoid valve SL2, Speed sensor (NT), Speed sensor (NC), Crankshaft posi-
tion sensor (NE)
Frequency of operationContinuous
Duration0.8 sec.
MIL operation2 driving cycles
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
All:
Transmission rangeºDº
ECT (Engine coolant temperature)60°C (140°F) or more
TFT (Transmission fluid temperature)-20C (-4F) or more
TFT sensor circuitNot circuit malfunction
ECT sensor circuitNot circuit malfunction
Turbine speed sensor circuitNot circuit malfunction
Intermediate shaft speed sensor circuitNot circuit malfunction
Output speed sensor circuitNot circuit malfunction
Shift solenoid valve SL1 circuitNot circuit malfunction
Shift solenoid valve SL2 circuitNot circuit malfunction
Shift solenoid valve S4 circuitNot circuit malfunction
Electronic throttle systemNot circuit malfunction
05C13-17

05-1090- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E/U151F)
1280 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
TYPICAL ENABLING CONDITIONS
All:
Transmission rangeºDº
ECT (Engine coolant temperature)10C (50F) or more
TFT (Transmission fluid temperature)-20C (-4F) or more
TFT sensor circuitNot circuit malfunction
ECT sensor circuitNot circuit malfunction
Turbine speed sensor circuitNot circuit malfunction
Intermediate shaft speed sensor circuitNot circuit malfunction
Output speed sensor circuitNot circuit malfunction
Shift solenoid valve SL1 circuitNot circuit malfunction
Shift solenoid valve SL2 circuitNot circuit malfunction
Shift solenoid valve SL3 circuitNot circuit malfunction
Shift solenoid valve S4 circuitNot circuit malfunction
Shift solenoid valve SR circuitNot circuit malfunction
Shift solenoid valve DSL circuitNot circuit malfunction
OFF malfunction (A)
ECM selected gear4th or 5th
Throttle valve opening angle4.5% or more at engine speed 1,900 rpm
(Varies with engine speed)
OFF malfunction (B)
ECM selected gear4th
Throttle valve opening angle5% or more
Vehicle speed10 km/h (6.2 mph) or more
ON malfunction (A)
ECM selected gear1st
Vehicle speedLess than 40 km/h (24.9 mph)
Throttle valve opening angle4.5% or more at engine speed 1,900 rpm
(Varies with engine speed)
ON malfunction (B)
ECM selected gear3rd
Throttle valve opening angle7.0% or more at output speed 1,400 rpm
(Varies with engine speed)
Malfunction of pressure control solenoid ºBº (SL2) and ºCº
(SL3)Not detected
ON malfunction (C)
Throttle valve opening angle7.0% or more at output speed 1,050 rpm
(Varies with engine speed)
Malfunction of pressure control solenoid ºBº (SL2)Not detected

05-928- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)
111 8 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P0710 TRANSMISSION FLUID TEMPERATURE
SENSOR ºAº CIRCUIT
DTC P0712 TRANSMISSION FLUID TEMPERATURE
SENSOR ºAº CIRCUIT LOW INPUT
DTC P0713 TRANSMISSION FLUID TEMPERATURE
SENSOR ºAº CIRCUIT HIGH INPUT
CIRCUIT DESCRIPTION
The ATF (Automatic Transmission Fluid) temperature sensor converts the fluid temperature into a resistance
value which is input into the ECM.
The ECM applies a voltage to the temperature sensor through ECM terminal THO1 (THO).
The sensor resistance changes with the transmission fluid temperature. As the temperature becomes high-
er, the sensor resistance decreases.
One terminal of the sensor is grounded so that the sensor resistance decreases and the voltage goes down
as the temperature becomes higher.
The ECM calculates the fluid temperature based on the voltage signal.
DTC No.DTC Detection ConditionTrouble Area
P0710
(a) and (b) is detected momentary within 0.5 sec. when neither
P0712 or P0713 is not detected (1-trip detection logic)
(a) ATF temperature sensor resistance is less than 79 W.
(b) ATF temperature sensor resistance is more than 156 kW.
HINT:
Within 0.5 sec., the malfunction switches from (a) to (b) or from
(b) to (a)

Open or short in ATF temperature sensor circuit

Transmission wire (ATF temperature sensor)

ECM
P0712ATF temperature sensor resistance is less than 79 W for 0.5
sec. or more (1-trip detection logic)
Short in ATF temperature sensor circuit

Transmission wire (ATF temperature sensor)

ECM
P0713
ATF temperature sensor resistance is more than 156 kW when
15 minutes or more after the engine start
DTC is detected for 0.5 sec. or more (1-trip detection logic)
Open in ATF temperature sensor circuit

Transmission wire (ATF temperature sensor)

ECM
MONITOR DESCRIPTION
The automatic transmission fluid (ATF) temperature sensor converts ATF temperature to an electrical resis-
tance value. Based on the resistance, the ECM determines the ATF temperature, and the ECM detects an
opens or shorts in the ATF temperature circuit. If the resistance value of the ATF temperature is less than
79
W*1 or more than 156 kW*2, the ECM interprets this as a fault in the ATF sensor or wiring. The ECM will
turn on the MIL and store the DTC.
*1: 150C (302F) or more is indicated regardless of the actual ATF temperature.
*2: -40C (-40F) is indicated regardless of the actual ATF temperature.
HINT:
The ATF temperature can be checked on the OBD II scan tool or hand-held tester display.
0527N-31

- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)05-929
111 9 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
MONITOR STRATEGY
Related DTCs
P0710: ATF temperature sensor/Range check (Fluttering)
P0712: ATF temperature sensor/Range check (Low resistance)
P0713: ATF temperature sensor/Range check (High resistance)
Required sensors/ComponentsATF temperature sensor (TFT sensor)
Frequency of operationContinuous
Duration0.5 sec.
MIL operationImmediate
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
P0710: Range check (Fluttering)
P0712: Range check (Low resistance)
The monitor will run whenever these DTCs are not present.See page 05-895
The typical enabling condition is not available.-
P0713: Range check (High resistance)
The monitor will run whenever this DTC is not present.See page 05-895
Time after engine start15 min. or more
TYPICAL MALFUNCTION THRESHOLDS
P0710: Range check (Fluttering)
TFT (transmission fluid temperature) sensor
Less than 79 W
or
More than 156 kW
P0712: Range check (Low resistance)
TFT (transmission fluid temperature) sensorLess than 79 W
P0713: Range check (High resistance)
TFT (transmission fluid temperature) sensorMore than 156 kW
COMPONENT OPERATING RANGE
TFT (transmission fluid temperature)Atmospheric temperature - approx. 130C (266F)

C54864
THO
E2 Transmission Wire Side:
(Connector Front View):
E10
- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)05-931
1121 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
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 hand-held tester:
Select the item ºDIAGNOSIS/ENHANCED OBD II/DATA LISTº.
(g) According to the display on tester, read the ºDATA LISTº.
ItemMeasurement Item/
Range (display)Normal Condition
AT FLUID TEMP
ATF Temp. Sensor Value/
min.: -40C (-40F)
max.: 215C (419F)
Approx. 80C (176F) (After Stall Test)
HINT:
When DTC P0712 is output and OBD II scan tool or hand-held tester output is 150C (302F), there is a
short circuit.
When DTC P0713 is output and OBD II scan tool or hand-held tester output is -40C (-40F), there is an
open circuit.
Measure the resistance between terminal THO1 (THO) and body ground.
Temperature DisplayedMalfunction
-40°C (-40°F)Open circuit
150°C (302°F) or moreShort circuit
1 INSPECT TRANSMISSION WIRE(ATF TEMPERATURE SENSOR)
(a) Disconnect the transmission wire connector from the
transaxle.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
1 (THO) - 6 (E2)79 W to 156 kW
(c) Measure the resistance according to the value(s) in the
table below.
Standard (Check for short):
Tester ConnectionSpecified Condition
1 (THO) - Body ground10 kW or higher
6 (E2) - Body ground=
NG REPAIR OR REPLACE TRANSMISSION WIRE
(SEE PAGE 40-34)
OK