Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 2004-2007 Approved SRM 04 05 2011n cip07101
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05-572 DIAGNOSTICS - ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] 0527N-35
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
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 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 Condition Trouble Area
(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 . S Open or short in ATF temperature sensor circuit
P0710 (b) ATF temperature sensor resistance is more than 156 k. S Transmission wire (ATF temperature sensor)
HINT: S ECM
Within 0.5 sec., the malfunction switches from (a) to (b) or from
(b) to (a)
S Short in ATF temperature sensor circuit
ATF temperature sensor resistance is less than 79 for 0.5
P0712 S Transmission wire (ATF temperature sensor)
sec. or more (1-trip detection logic)
S ECM
ATF temperature sensor resistance is more than 156 k when S Open in ATF temperature sensor circuit
P0713 15 minutes or more after the engine start S Transmission wire (ATF temperature sensor)
DTC is detected for 0.5 sec. or more (1-trip detection logic) S 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 *1 or more than 156 k*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.
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 755
DIAGNOSTICS - ELECTRONIC CONTROLLED AUTOMATIC 05-573
TRANSAXLE [ECT]
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
P0710: Range check (Fluttering)
P0712: Range check (Low resistance)
The monitor will run whenever these DTCs are not present. See page 05-9
The typical enabling condition is not available. -
P0713: Range check (High resistance)
The monitor will run whenever this DTC is not present. See page 05-9
Time after engine start 15 min. or more
TYPICAL MALFUNCTION THRESHOLDS
P0710: Range check (Fluttering)
Less than 79
TFT (transmission fluid temperature) sensor or
More than 156 k
P0712: Range check (Low resistance)
TFT (transmission fluid temperature) sensor Less than 79
P0713: Range check (High resistance)
TFT (transmission fluid temperature) sensor More than 156 k
COMPONENT OPERATING RANGE
TFT (transmission fluid temperature) Atmospheric temperature - approx. 130_C (266_F)
WIRING DIAGRAM
E1
Electronically Controlled
Transmission Solenoid ECM
28
O 7 BR
E8 E2
32
O 1 G-W
E7 THO1
G39665
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 756
05-574 DIAGNOSTICS - ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT]
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 "ON" button of the OBD II scan tool or the hand-held tester.
(f) When you use hand-held tester:
Select the item "DIAGNOSIS/ENHANCED OBD II/DATA LIST".
(g) According to the display on tester, read the "DATA LIST".
Measurement Item/
Item Normal Condition
Range (display)
ATF Temp. Sensor Value/
AT FLUID TEMP min.: -40_C (-40_F) Approx. 80_C (176_F) (After Stall Test)
max.: 215_C (419_F)
HINT:
When DTC P0712 is output and OBD II scan tool or hand-held tester output is 150_C (302_F), there is a
short circuit.
When DTC P0713 is output and OBD II scan tool or hand-held tester output is -40_C (-40_F), there is an
open circuit.
Measure the resistance between terminal THO1 (THO) and body ground.
Temperature Displayed Malfunction
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