P0710

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

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 higher, the sensor resistance decreases.
One terminal of the sensor is grounded so that the sensor resistance and the voltage decrease as the temperature becomes higher.
The ECM calculates the fluid temperature based on the voltage signal.








MONITOR DESCRIPTION
These DTCs indicate an open or short in the Automatic Transmission Fluid (ATF) temperature sensor circuit.
The ATF temperature sensor converts ATF temperature to an electrical resistance value. Based on the resistance, the ECM determines the ATF temperature, and detects any open or short malfunctions in the ATF temperature circuit. If the resistance value of the ATF temperature is less than 79 Ohms *1 or more than 156 k Ohms *2, the ECM interprets this as a fault in the ATF sensor or its wiring. The ECM turns on the MIL and stores a 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 intelligent tester display.

MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS





TYPICAL MALFUNCTION THRESHOLDS

Part 1:

Part 2:

COMPONENT OPERATING RANGE

WIRING DIAGRAM:

INSPECTION PROCEDURE

HINT: According to the DATA LIST displayed on the intelligent tester, you can read the values of components, such as the switches, sensors and actuators, without removing any parts. Reading the DATA LIST as a first step of troubleshooting is one method of shortening labor time.

NOTICE: In the table below, the values listed under "Normal Condition" are for reference only. Do not depend solely on these reference values when judging whether a part is faulty or not.

1. Warm up the engine.
2. Turn the ignition switch off.
3. Connect the intelligent tester together with the CAN VIM (controller area network vehicle interface module) to the DLC3.
4. Turn the ignition switch to the ON position.
5. Push the "ON" button of the tester.
6. Select the items "DIAGNOSIS/ENHANCED OBD II/DATA LIST/A/T".
7. According to the display on the tester, read the "DATA LIST".





HINT:
When DTC P0712 is output and intelligent tester reading is 150°C (302°F) or more, there is a short circuit.
When DTC P0713 is output and intelligent tester reading is -40°C (-40°F), there is an open circuit.
Measure the resistance between terminal THO1 (OT) and the body ground.





HINT: If a circuit related to the ATF temperature sensor becomes open, P0713 is immediately set (in 0.5 seconds). When P0713 is set, P0711 cannot be detected.
It is not necessary to inspect the circuit when P0711 is set.

Step 1:

Step 2: