AUTOMATIC TRANSMISSION SYSTEM, Diagnostic DTC:P0712, P0713

DTC Code DTC Name
P0712 Transmission Fluid Temperature Sensor "A" Circuit Low Input
P0713 Transmission Fluid Temperature Sensor "A" Circuit High Input

DESCRIPTION

The oil temperature sensor within the valve body detects the oil temperature within the transmission hydraulic control circuit, and inputs into the TCM a signal corresponding to the oil temperature.

A004I8SE01
*1 Resistance
*2 Acceptable
*3 Temp.
DTC No.

DTC Detection Condition


  1. Diagnosis Condition

  2. Malfunction Status

  3. Malfunction Time

  4. Other

 Trouble Area
P0712

  1. Not learning control prohibited status

  2. The oil temperature sensor input voltage is 0.05 V or less

  3. Detects a malfunction that continues for 10 seconds 6 times consecutively

  4. 1-trip detection logic

  • Transmission wire (ATF temperature sensor)

  • Harness and connector

  • TCM
P0713

  1. Park/neutral position switch assembly is normal, and shift lever is in D or R for 1 min. or more

    Not learning control prohibited status

  2. The oil temperature sensor input voltage is 4.94 V or more

  3. Detects a malfunction that continues for 1 second 12 times consecutively

  4. 1-trip detection logic

  • Transmission wire (ATF temperature sensor)

  • Harness and connector

  • TCM

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 resistance value. Based on the resistance, the TCM determines the ATF temperature, and the TCM detects an open or short in the ATF temperature circuit. If the resistance value of the ATF temperature is less than 0.049 V or more than 4.932 V , the TCM interprets this as a fault in the ATF sensor or wiring. The TCM will turn on the MIL and store the DTC.

WIRING DIAGRAM

A004KEYE04
*1 OIL
*2 ATF Temperature Sensor
*3 Transmission Wire

CAUTION / NOTICE / HINT

Note

Perform the universal trip to clear permanent DTCs Click here.


  1. DATA LIST

    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.

    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.


    1. Warm up the engine.

    2. Turn the ignition switch off.

    3. Connect the GTS to the DLC3.

    4. Turn the ignition switch ON.

    5. Turn the GTS on.

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

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

      Item

      Measurement Item/

      Range (display)

      		 Normal Condition
      A/T Oil Temperature 1

      ATF Temp. Sensor Value/

      min.: -40°C (-40°F)

      max.: 215°C (419°F)

      • After Stall Test;

        Approx. 80°C (176°F)

      • Equal to ambient temperature when cold soak

      Tech Tips

      When DTC P0712 is output and GTS output is -40°C (-40°F) or more, there is a short circuit.

      When DTC P0713 is output and GTS output is 171°C (340°F), there is an open circuit.

      Temperature Displayed Malfunction
      171°C (340°F) Open circuit
      -40°C (-40°F) or more Short circuit

PROCEDURE


  1. INSPECT TRANSMISSION WIRE (ATF TEMPERATURE SENSOR)


    1. Disconnect the A18 TCM connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      A18-22(OIL) - A18-23(EOIL) Always 79 Ω to 156 kΩ

    3. Connect the A18 TCM connector.


    NG

    CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - TCM) Click here

    OK

  2. REPLACE TCM


    1. Replace the TCM Click here.


    NEXT

    PERFORM THE RESET MEMORY Click here

  3. CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - TCM)


    1. Disconnect the A18 TCM connector.

    2. Disconnect the L4 transmission wire connector.

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

      Standard voltage
      Tester Connection Condition Specified Condition
      L4-8(EOIL) - Body ground Ignition switch ON Below 1 V
      L4-15(OIL) - Body ground Ignition switch ON Below 1 V

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

      Standard resistance
      Tester Connection Condition Specified Condition
      A18-22(OIL) - L4-15(OIL) Always Below 1 Ω
      A18-23(EOIL) - L4-8(EOIL) Always Below 1 Ω
      L4-8(EOIL) - Body ground Always 10 kΩ or higher
      L4-15(OIL) - Body ground Always 10 kΩ or higher

    5. Connect the A18 TCM connector.

    6. Connect the L4 transmission wire connector.


    OK

    REPAIR OR REPLACE TRANSMISSION WIRE Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR