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Fig. 54: Identifying Transmission Control Switch Terminals
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Standard:
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Fig. 55: Transmission Control Switch Reference Chart
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
NG: REPLACE TRANSMISSION CONTROL SWITCH (See COMPONENTS
)
OK: Go to next step
3.CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH -ECM)
a. Connect the transmission control switch connector of shift lock control unit assy.
b. Turn the ignition switch to the ON position, and measure the voltage according to the value(s) in
the table below when the shift lever is moved to each position.
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Fig. 56: Identifying ECM Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
Standard:
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Fig. 57: ECM Connector Terminals Reference Chart
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (SeeELECTRONIC CIRCUIT
INSPECTION PROCEDURE )
OK: REPLACE ECM (See REPLACEMENT
)
DTC P0710, P0712, P0713: TRANSMISSION FLUID TEMPERATURE SENSOR "A" CIRCUIT
LOW/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 OIL.
The sensor resistance changes with the transmission fluid temperature. As the temperature becomes higher, 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 volta
ge signal.
Page 2741 of 4500
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2a005500440053004b[
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
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Fig. 59: DTC Reference Chart
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
MONITOR DESCRIPTION
These DTCs indicate an open or short in the automatic transmission fluid (ATF) temperature sensor circuit. The
automatic transmission fluid (ATF) temperature sensor converts ATF temperature to an electrical resistance
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 79ohms*1 or
more than 156kohms*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: 150°C (302°F) or more is indicated regardless of the actual ATF temperature.
*2: -40°C (-40°F) 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.
MONITOR STRATEGY
MONITOR STRATEGY TABLE
Related DTCsP0710: ATF temperature sensor/Range check
(Chattering) 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
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TYPICAL ENABLING CONDITIONS
P0710: Range check (Chattering)
P0712: Range check (Low resistance)
TYPICAL ENABLING CONDITIONS TABLE - P0710, P0712
P0713: Range check (High resistance)
TYPICAL ENABLING CONDITIONS TABLE - P0713
TYPICAL MALFUNCTION THRESHOLDS
P0710: Range check (Chattering)
TYPICAL MALFUNCTION THRESHOLDS TABLE - P0710
P0712: Range check (Low resistance)
TYPICAL MALFUNCTION THRESHOLDS P0712
P0713: Range check (High resistance)
TYPICAL MALFUNCTION THRESHOLDS TABLE - P0713
COMPONENT OPERATING RANGE
COMPONENT OPERATING RANGE TABLE
WIRING DIAGRAM
The monitor will run whenever these DTCs are not
present.See LIST OF DISABLE A MONITOR
The typical enabling condition is not available.-
The monitor will run whenever this DTC is not
present.See LIST OF DISABLE A MONITOR
Time after engine start15 min. or more
TFT (transmission fluid temperature) sensor
resistanceLess than 79 ohms or More than 156 kohms
TFT sensor resistanceLess than 79ohms
TFT sensor resistanceMore than 156 kohms
TFT sensorAtmospheric temperature - approx. 130°C (266° F)
Page 2744 of 4500
Fig. 60: DTCs P0710, P0712, P0713 - Wiring Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
INSPECTION PROCEDURE
HINT:
According to the DATA LIST displayed by the 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 hand-held tester together with the CAN VIM (controller area network vehicle interface
module) to the DLC3.
d. Turn the ignition switch to the ON position.
e. Push the "ON" button of the hand-held tester.
f. Select the item "DIAGNOSIS/ENHANCED OBD II/DATA LIST".
g. According to the display on tester, read the "DATA LIST".