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

Refer to DTC P0711 Click here.

DTC No.

DTC Detection Condition


  1. Diagnosis Condition

  2. Malfunction Status

  3. Malfunction Time

  4. Other

 Trouble Area
P0712

  1. The battery voltage is 9.5 V or higher.

  2. No. 1 ATF temperature sensor voltage is below 0.08 V

  3. 60 seconds

  4. 1-trip detection logic

  • Short in No. 1 ATF temperature sensor circuit

  • No. 1 ATF temperature sensor (transmission wire)

  • TCM
P0713

  1. The battery voltage is 9.5 V or higher, engine speed is more than 400 rpm and shift lever in D.

  2. No. 1 ATF temperature sensor voltage is higher than 4.94 V

  3. 12 seconds

  4. 1-trip detection logic

  • Open in No. 1 ATF temperature sensor circuit

  • No. 1 ATF temperature sensor (transmission wire)

  • TCM

MONITOR DESCRIPTION

The No. 1 ATF temperature sensor converts the ATF temperature to an electrical resistance value. Based on the resistance, the TCM determines the ATF temperature and detects an open or short in the No. 1 ATF temperature sensor circuit. If the resistance value of the No. 1 ATF temperature sensor is below 79 Ω*1 or higher than 156 kΩ*2, the TCM interprets this as a fault in the No. 1 ATF temperature sensor or wiring. The TCM will illuminate the MIL and store the DTC.

Tech Tips


  • *1: 171°C (339.8°F) or higher is indicated regardless of the actual ATF temperature.

  • *2: -40°C (-40°F) is indicated regardless of the actual ATF temperature.

  • The ATF temperature can be checked on the GTS display.

WIRING DIAGRAM

A01WPH4E24
*a No. 1 ATF Temperature Sensor
*b Transmission Wire

CAUTION / NOTICE / HINT

Note

Perform registration and/or initialization when parts related to the automatic transmission 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.

  2. Wait for 60 seconds or more with the shift lever in D.

  3. 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 / ECT / Data List / A/T Oil Temperature 1.

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

      ECT
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      A/T Oil Temperature 1

      No. 1 ATF temperature sensor value/

      Min.: -40°C (-40°F)

      Max.: 171°C (339.8°F)

      • After stall speed test: Approximately 80°C (176°F)

      • While engine is cold: Equal to ambient temperature

      		 If value is -40°C (-40°F) or 171°C (339.8°F), No. 1 ATF temperature sensor circuit is open or short circuited.

      Tech Tips


      • When DTC P0712 is output and the GTS shows 171°C (339.8°F) or higher, there is a short circuit.

      • When DTC P0713 is output and the GTS shows -40°C (-40°F), there is an open circuit.

        Check the temperature displayed on the GTS in order to check if a malfunction exists.

      Temperature Displayed Malfunction
      -40°C (-40°F) Open or short circuit
      171°C (339.8°F) or higher Short circuit

      Tech Tips

      If a circuit related to the No. 1 ATF temperature sensor becomes open, P0713 will be stored in approximately 0.5 seconds. It is not necessary to inspect the circuit when P0711 is output.

PROCEDURE


  1. READ VALUE USING GTS (A/T OIL TEMPERATURE 1)


    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 / ECT / Data List / A/T Oil Temperature 1.

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

      ECT
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      A/T Oil Temperature 1

      No. 1 ATF temperature sensor value/

      Min.: -40°C (-40°F)

      Max.: 171°C (339.8°F)

      • After stall speed test: Approximately 80°C (176°F)

      • While engine is cold: Equal to ambient temperature

      		 If value is -40°C (-40°F) or 171°C (339.8°F), No. 1 ATF temperature sensor circuit is open or short circuited
      Result
      Result Proceed to
      Data List value is not within the normal condition A
      Data List value is within the normal condition (for LHD) B
      Data List value is within the normal condition (for RHD) C

    B

    REPLACE TCM Click here

    C

    REPLACE TCM Click here

    A

  2. CHECK HARNESS AND CONNECTOR (NO. 1 ATF TEMPERATURE SENSOR - TCM)


    1. A01WTLQE03
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to TCM)

      Disconnect the TCM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A72-23 (THO1) - A72-24 (E2) Always 79 Ω to 156 kΩ
      A72-23 (THO1) - Body ground Always 10 kΩ or higher
      A72-24 (E2) - Body ground 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 driveability 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
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    A

    REPLACE TCM Click here

    B

    REPLACE TCM Click here

    C

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


    1. Disconnect the C67 transmission wire connector.

    2. Disconnect the A72 TCM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      C67-1 (OT+) - A72-23 (THO1) Always Below 1 Ω
      C67-2 (OT-) - A72-24 (E2) Always Below 1 Ω
      C67-1 (OT+) or A72-23 (THO1) - Body ground Always 10 kΩ or higher
      C67-2 (OT-) or A72-24 (E2) - Body ground Always 10 kΩ or higher

    OK

    REPLACE NO. 1 ATF TEMPERATURE SENSOR (TRANSMISSION WIRE) Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR