P0711

U241E AUTOMATIC TRANSAXLE: AUTOMATIC TRANSAXLE SYSTEM: P0711: Transmission Fluid Temperature Sensor "A" Performance

DTC P0711 - Transmission Fluid Temperature Sensor "A" Performance

DESCRIPTION

The Automatic Transmission Fluid (ATF) temperature sensor converts the ATF 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 ATF temperature.
One terminal of the sensor is grounded so that the sensor resistance and voltage decrease as the temperature becomes higher.
The ECM calculates the ATF based on the voltage signal.






MONITOR DESCRIPTION

The ATF temperature sensor converts the ATF temperature to an electrical resistance value. Based on the resistance, the ECM determines the ATF temperature and detects an open or short in the ATF temperature circuit or a fault in the ATF temperature sensor.
After running the vehicle for a certain period, the ATF temperature should increase. If the ATF temperature is less than 10°C (50°F) after running the vehicle for a certain period, the ECM interprets this as a fault, and turns on the, MIL and stores the DTC.
When the ATF temperature is 100°C (212°F) or more and engine coolant temperature reaches 60°C (140°F) after cold start, the ECM also determines this as a fault, turns on the MIL, and stores the DTC.

MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS

All





Condition (A)





Condition (B)





TYPICAL MALFUNCTION THRESHOLDS

Condition (A)





Condition (B)





COMPONENT OPERATING RANGE





WIRING DIAGRAM






INSPECTION PROCEDURE

1. DATA LIST
HINT: Using an intelligent tester or Techstream Data List allows switch, sensor, actuator and other item values to be read without removing any parts. Reading the Data List early in troubleshooting is one way to save time.
NOTE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

(a) Warm up the engine.
(b) Turn the ignition switch to OFF.
(c) Connect the intelligent tester or Techstream to the DLC3.
(d) Turn the ignition switch to ON and turn the tester switch ON.
(e) Enter the following menus:
(1) Intelligent tester - Select: DIAGNOSIS / ENHANCED OBD II / DATA LIST.
(2) Techstream - Select: Powertrain / Engine and ECT / Data List.
(f) Follow the instructions on the tester and read the Data List.
(1) Intelligent tester





(2) Techstream





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





HINT: If a circuit related to the ATF temperature sensor becomes open, P0713 is set in approximately 0.5 seconds. It is not necessary to inspect the circuit when P0711 is set.

PROCEDURE

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0711)
(a) Connect an intelligent tester or Techstream to the DLC3.
(b) Turn the ignition switch to ON and turn the tester switch ON.
(c) Enter the following menus:
(1) Intelligent tester - Select: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
(2) Techstream - Select: Powertrain / Engine and ECT / Trouble Codes.
(d) Read the DTCs using the tester.
Result:





HINT: If any other codes besides P0711 are output, perform troubleshooting for those DTCs first.

B -- GO TO DTC CHART
A -- Continue to next step.
2. CHECK TRANSMISSION FLUID LEVEL
OK:
Automatic transmission fluid level is correct.
NG -- ADD FLUID
OK -- REPAIR OR REPLACE TRANSMISSION WIRE (ATF TEMPERATURE SENSOR)