AUTOMATIC TRANSAXLE SYSTEM, Diagnostic DTC:P071015

DTC Code DTC Name
P071015 Transmission Fluid Temperature Sensor "A" Circuit Short to Battery or Open

DESCRIPTION

The ATF temperature sensor converts the automatic transmission fluid temperature into a resistance value for use by the ECM.

The ECM applies voltage to the temperature sensor through terminal THO1 of the ECM.

The sensor resistance changes with the ATF temperature. As the temperature rises, the sensor resistance decreases.

One terminal of the sensor is grounded so that the sensor resistance and voltage decrease as the temperature rises.

The ECM calculates the ATF temperature based on the voltage signal.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P071015 Transmission Fluid Temperature Sensor "A" Circuit Short to Battery or Open

1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other


    DTC Detection Condition 1:

  1. 15 minutes or more have elapsed since the engine was started when the engine coolant temperature or intake air temperature was -29.375°C (-20.875°F) or less.

  2. The ATF temperature sensor voltage is higher than 4.915 V.

  3. 0.5 seconds

  4. 1-trip detection logic


    DTC Detection Condition 2:

  1. 10 seconds or more have elapsed since the engine was started when the engine coolant temperature or intake air temperature was more than -29.375°C (-20.875°F).

  2. The ATF temperature sensor voltage is higher than 4.915 V.

  3. 0.5 seconds

  4. 1-trip detection logic

  • Open or short to +B in ATF temperature sensor circuit

  • Wiring harness connector

  • Transmission wire

  • ATF temperature sensor (ATF temperature sensor assembly)

  • ECM

 Comes on DTC stored

SAE Code:

P0713

MONITOR DESCRIPTION

This DTC indicates an open or short to +B in the ATF temperature sensor circuit. The ATF temperature sensor converts the ATF temperature into an electrical resistance value. Based on the resistance, the ECM determines the ATF temperature, and can detect an open or short in the ATF temperature sensor circuit. If the resistance value of the ATF temperature sensor is higher than 156 kΩ*, the ECM interprets this as a malfunction of the ATF temperature sensor or in the wire harness, illuminates the MIL and stores this DTC.

*: -40°C (-40°F) is indicated regardless of the actual ATF temperature.

Tech Tips

The ATF temperature can be checked in the Data List.

WIRING DIAGRAM

Refer to DTC P071011.

Click here

CAUTION / NOTICE / HINT

Note

Perform registration and/or initialization when parts related to the automatic transaxle are replaced.

Click here

Tech Tips

After performing repair, clear the DTCs and perform the following procedure to check that DTCs are not output.


  1. Start the engine and wait for 15 minutes or more.

  2. Check for DTCs again.

    Click here


  1. DATA LIST

    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.

    Tech Tips

    Using the GTS to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.


    1. Warm up the engine.

    2. Turn the engine switch off.

    3. Connect the GTS to the DLC3.

    4. Turn the engine switch on (IG).

    5. Turn the GTS on.

    6. Enter the following menus: Powertrain / Transmission / Data List.

    7. According to the display on the GTS, read the Data List.


      Powertrain > Transmission > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      A/T Oil Temperature No.1 ATF temperature sensor value

      Min.: -40°C (-40°F)

      Max.: 150°C (302°F)

      • Approximately 80°C (176°F):

        After stall test

      • Equal to ambient temperature:

        After cold soak

      		 If the value is -40°C (-40°F) or 150°C (302°F), the ATF temperature sensor circuit is open or shorted.

      Powertrain > Transmission > Data List
      Tester Display
      A/T Oil Temperature No.1

      Tech Tips


      • If DTC P071011 is output and the GTS indicates 150°C (302°F) or higher, there is a short in the circuit.

      • If DTC P071015 is output and the GTS indicates -40°C (-40°F), the circuit is open.

        Measure the resistance between terminal THO1 (OIL) and body ground.

        Temperature Displayed Malfunction
        -40°C (-40°F) Open circuit
        150°C (302°F) or higher Short circuit

      • If a circuit related to the ATF temperature sensor becomes open, DTC P071015 is stored immediately (in 0.5 seconds). If DTC P071015 is stored, DTC P071000 cannot be detected.

        It is not necessary to inspect the circuit when P071000 is stored.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (ATF TEMPERATURE SENSOR CIRCUIT)


    1. Disconnect the D1 ECM connector.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      D1-84 (THO1) - D1-83 (ETHO) Always 79 Ω to 156 kΩ
      D1-84 (THO1) - Other terminals Always 10 kΩ or higher
      D1-83 (ETHO) - Other terminals Always 10 kΩ or higher

      Tech Tips

      If the resistance is out of the specified range at any of the ATF temperatures shown in the table below, the drivability of the vehicle may decrease.

      ATF Temperature Specified Condition
      10°C (50°F) 5 to 8 kΩ
      25°C (77°F) 2.5 to 4.5 kΩ
      110°C (230°F) 0.22 to 0.28 kΩ
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ECM Click here

    NG

  2. CHECK HARNESS AND CONNECTOR (WIRING HARNESS CONNECTOR - ECM)


    1. Disconnect the D57 wiring harness connector connector.

    2. Disconnect the D1 ECM connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      D57-13 (OIL) - D1-84 (THO1) Always Below 1 Ω
      D57-12 (E2) - D1-83 (ETHO) Always Below 1 Ω
      D57-13 (OIL) or D1-84 (THO1) - Other terminals Always 10 kΩ or higher
      D57-12 (E2) or D1-83 (ETHO) - Other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT TRANSMISSION WIRE (ATF TEMPERATURE SENSOR)


    1. B00800AC01
      *a

      Component without harness connected

      (Transmission Wire)

      Remove the wiring harness connector.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      A-18 (THO1) - A-17 (E2) Always 79 Ω to 156 kΩ
      A-18 (THO1) - Other terminals Always 10 kΩ or higher
      A-17 (E2) - Other terminals Always 10 kΩ or higher

      Tech Tips

      If the resistance is out of the specified range at any of the ATF temperatures shown in the table below, the drivability of the vehicle may decrease.

      ATF Temperature Specified Condition
      10°C (50°F) 5 to 8 kΩ
      25°C (77°F) 2.5 to 4.5 kΩ
      110°C (230°F) 0.22 to 0.28 kΩ
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE WIRING HARNESS CONNECTOR Click here

    NG

  4. INSPECT ATF TEMPERATURE SENSOR


    1. B007YP2C05
      *a

      Component without harness connected

      (ATF Temperature Sensor Assembly)

      Disconnect the ATF temperature sensor connector.

      Click here

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      THO1 - E2 Always 79 Ω to 156 kΩ
      THO1 - Other terminals Always 10 kΩ or higher
      E2 - Other terminals Always 10 kΩ or higher

      Tech Tips

      If the resistance is out of the specified range at any of the ATF temperatures shown in the table below, the drivability of the vehicle may decrease.

      ATF Temperature Specified Condition
      10°C (50°F) 5 to 8 kΩ
      25°C (77°F) 2.5 to 4.5 kΩ
      110°C (230°F) 0.22 to 0.28 kΩ
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE TRANSMISSION WIRE Click here

    NG

    REPLACE ATF TEMPERATURE SENSOR (ATF TEMPERATURE SENSOR ASSEMBLY) Click here