AUTOMATIC TRANSAXLE 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 Code DTC Detection Condition Trouble Area
P0712 ATF temperature sensor resistance is less than 79 Ω for 0.5 sec. or more (1-trip detection logic).

  • Short in ATF temperature sensor circuit

  • Transmission wire

  • ATF temperature sensor (ATF temperature sensor assembly)

  • TCM
P0713 ATF temperature sensor resistance is more than 156 kΩ for 0.5 sec. or more when 15 minutes or more have elapsed after the engine starts (1-trip detection logic).

  • Open in ATF temperature sensor circuit

  • Transmission wire

  • ATF temperature sensor (ATF temperature sensor assembly)

  • TCM

MONITOR DESCRIPTION

These DTCs indicate an open or short in the ATF temperature sensor circuit. The ATF temperature sensor converts ATF temperature into 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 79 Ω*1 or more than 156 kΩ*2, the TCM interprets this as a fault in the ATF sensor or wiring. The TCM will turn on the MIL and store the DTC.

Tech Tips


  • The ATF temperature can be checked on the intelligent tester display.

  • *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.

WIRING DIAGRAM

A01ITO9E02

INSPECTION PROCEDURE

Refer to DTC P0711 Click here.

PROCEDURE


  1. INSPECT TRANSMISSION WIRE (ATF TEMPERATURE SENSOR)


    1. A01ITDLE25
      Text in Illustration
      *1

      Component without TCM connected

      (Transmission Wire)

      Remove the TCM.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      18 (THO1) - 17 (E2) Always 79 Ω to 156 kΩ
      18 (THO1) - Body ground Always 10 kΩ or higher
      17 (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.

      Resistance (Reference)
      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

    NG

    INSPECT ATF TEMPERATURE SENSOR Click here

    OK

    REPLACE TCM Click here

  2. INSPECT ATF TEMPERATURE SENSOR


    1. A01IULTE05
      Text in Illustration
      *1

      Component without harness connected

      (ATF Temperature Sensor Assembly)

      Disconnect the ATF temperature sensor connector.

    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 - Body ground Always 10 kΩ or higher
      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.

      Resistance (Reference)
      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

    NG

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

    OK

    REPLACE TRANSMISSION WIRE Click here