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DI-1166 DIAGNOSTICS - AUTOMATIC TRANSMISSION (A750E/A750F for
2UZ-FE)
DIDWK-01
DTC P0710 Transmission Fluid Temperature Sensor "A"
Circuit
DTC P0712 Transmission Fluid Temperature Sensor "A"
Circuit Low Input
DTC P0713 Transmission Fluid Temperature Sensor "A"
Circuit High Input
DIAGNOSTICS - AUTOMATIC TRANSMISSION (A750E/A750F for DI-1167
2UZ-FE)
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.
The sensor resistance changes with the transmission fluid tem-
Acceptable perature. As the temperature becomes higher, the sensor resis-
tance decreases.
Resistance
One terminal of the sensor is grounded so that the sensor resis-
tance decreases and the voltage goes down as the tempera-
ture becomes higher.
The ECM calculates the fluid temperature based on the voltage
signal.
Temp.
A67628 D14156
DTC No. DTC Detection Condition Trouble Area
(a) and (b) are detected momentarily within 0.5 sec. when
neither P0712 nor P0713 is detected (1-trip detection logic)
(a) ATF temperature sensor No.1 resistance is less than 79 .
S Open or short in ATF temperature sensor No.1 circuit
(b) ATF temperature sensor No.1 resistance is more than 156
P0710 S Transmission wire (ATF temperature sensor No.1)
k.
S ECM
HINT:
Within 0.5 sec., the malfunction switches from (a) to (b) or from
(b) to (a)
S Short in ATF temperature sensor No.1 circuit
ATF temperature sensor No.1 resistance is less than 79 for
P0712 S Transmission wire (ATF temperature sensor No.1)
0.5 sec. or more (1-trip detection logic)
S ECM
ATF temperature No.1 sensor resistance is more than 156 k S Open in ATF temperature sensor No.1 circuit
P0713 when 15 minutes or more have elapsed after the engine start S Transmission wire (ATF temperature sensor No.1)
DTC is detected for 0.5 sec. or more (1-trip detection logic) S ECM
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 resis-
tance value. Based on the resistance, the ECM determines the ATF temperature, and the ECM detects an
open or short in the ATF temperature circuit. If the resistance value of the ATF temperature is less than 79*1
or more than 156k*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.
DI-1168 DIAGNOSTICS - AUTOMATIC TRANSMISSION (A750E/A750F for
2UZ-FE)
MONITOR STRATEGY
P0710 ATF temperature sensor/Range check (Fluttering)
Related DTCs P0712 ATF temperature sensor/Range check (Low resistance)
P0713 ATF temperature sensor/Range check (High resistance)
Required sensors/Components ATF temperature sensor (TFT sensor)
Frequency of operation Continuous
Duration 0.5 sec.
MIL operation Immediate
Sequence of operation None
TYPICAL ENABLING CONDITIONS
Specification
Item
It
Minimum Maximum
The monitor will run whenever these
See page DI-1128
DTCs are not present.
Range check (Fluttering, Low resistance)
The typical enabling condition is not avail-
-
able.
Range check (High resistance)
Time after engine start 15 min. or more -
TYPICAL MALFUNCTION THRESHOLDS
Detection criteria Threshold
Range check (Fluttering)
Less than 79
TFT (transmission fluid temperature) sensor resistance or
More than 156 k
Range check (Low resistance)
TFT (transmission fluid temperature) sensor resistance Less than 79
Range check (High resistance)
TFT (transmission fluid temperature) sensor resistance More than 156 k
COMPONENT OPERATING RANGE
Parameter Standard value
TFT (transmission fluid temperature) sensor Atmospheric temperature to approx. 130◦ Jabse Service Manual Search 2026 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo