Dtc P0712 Transmission Fluid Temperature Sensor A Circuit Low Input

Transmission. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
K111F Cvt. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

DESCRIPTION

MONITOR DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING INTELLIGENT TESTER (A/T OIL TEMPERATURE 1)

INSPECT TRANSMISSION WIRE (CVT FLUID TEMPERATURE SENSOR)

CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)

REPLACE ECM

PERFORM INITIALIZATION

REPLACE ECM

PERFORM INITIALIZATION

REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY

PERFORM INITIALIZATION

DTC P0712 Transmission Fluid Temperature Sensor "A" Circuit Low Input

DTC P0713 Transmission Fluid Temperature Sensor "A" Circuit High Input


DESCRIPTION


Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.K111F Cvt.Continuously Variable Transaxle System. Dtc P0712 Transmission Fluid Temperature Sensor A Circuit Low Input

The CVT fluid temperature sensor converts the fluid temperature into a resistance value which is detected by the ECM.
The sensor resistance changes with the CVT fluid temperature. As the temperature rises, the sensor resistance decreases. The ECM applies a voltage to the temperature sensor through ECM terminal THO1 and calculates the fluid temperature based on the voltage signal.
HINT:
The CVT fluid temperature is likely to increase under conditions such as towing, climbing hills and in heavy traffic.

DTC Code
DTC Detection Condition
  1. Diagnosis Condition
  2. Malfunction Status
  3. Malfunction Time
  4. Other
Trouble Area
P0712
  1. -
  2. There is a short circuit in the CVT fluid temperature sensor circuit.
  3. 0.5 seconds
  4. 1 trip detection logic
  1. Short in CVT fluid temperature sensor circuit
  2. Continuously variable transaxle assembly
  3. ECM
P0713
  1. 15 minutes or more after starting the engine.
  2. There is an open circuit in the CVT fluid temperature sensor circuit.
  3. 0.5 seconds
  4. 1 trip detection logic
  1. Open in CVT fluid temperature sensor circuit
  2. Continuously variable transaxle assembly
  3. ECM

MONITOR DESCRIPTION

The CVT fluid temperature sensor converts the CVT fluid temperature to an electrical resistance value. Based on the resistance, the ECM determines the CVT fluid temperature and detects open or short circuits in the CVT fluid temperature circuit. If the resistance value of the CVT fluid temperature sensor is less than 79 Ω*1 or more than 156 kΩ*2, the ECM interprets this as a fault in the CVT fluid temperature sensor or wiring. The ECM turns on the MIL and stores the DTC.
*1: 150°C (302°F) or more is indicated regardless of the actual CVT fluid temperature.
*2: -40°C (-40°F) is indicated regardless of the actual CVT fluid temperature.
HINT:
The CVT fluid temperature can be checked on the intelligent tester display.

WIRING DIAGRAM


Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.K111F Cvt.Continuously Variable Transaxle System. Dtc P0712 Transmission Fluid Temperature Sensor A Circuit Low Input


INSPECTION PROCEDURE

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

  1. Warm up the engine.

  1. Turn the ignition switch off.

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the intelligent tester on.

  1. Enter the following menus: Powertrain / Engine and ECT / Data List.

  1. In accordance with the display on the tester, read the Data List.

    Engine and ECT
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    A/T Oil Temperature 1
    		CVT fluid temperature sensor value/
    min.: -40°C (-40°F)
    max.: 215°C (419°F)
    1. After stall speed test: Approx. 80°C (176°F)
    2. Equal to ambient temperature after cold soak
    		If the value is -40°C (-40°F) or 150°C (302°F) or more, the CVT fluid temperature sensor circuit is open or shorted.
    Result
    Result
    		Proceed to
    Data displayed is not as specified under Normal Condition
    		A
    Data displayed is as specified under Normal Condition
    		B


B
Go to step 6
A


2.INSPECT TRANSMISSION WIRE (CVT FLUID TEMPERATURE SENSOR)


    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.K111F Cvt.Continuously Variable Transaxle System. Dtc P0712 Transmission Fluid Temperature Sensor A Circuit Low Input

  1. Disconnect the transmission wire connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    1 (THO) - 6 (E2)
    		Always
    		79 Ω to 156 kΩ
    1 (THO) - Body ground
    		Always
    		10 kΩ or higher
    6 (E2) - Body ground
    		Always
    		10 kΩ or higher
    HINT:
    If the resistance is outside the specified range at any of the CVT fluid temperatures shown in the table below, the driveability of the vehicle may be affected.
    Resistance (Reference):
    CVT Fluid 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
Text in Illustration
*1
Component without harness connected
(Transmission Wire)


NG
Go to step 8
OK


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


    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.K111F Cvt.Continuously Variable Transaxle System. Dtc P0712 Transmission Fluid Temperature Sensor A Circuit Low Input

  1. Disconnect the ECM connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    B32-70 (THO1) - B32-71 (ETHO)
    		Always
    		79 Ω to 156 kΩ
    B32-70 (THO1) - Body ground
    		Always
    		10 kΩ or higher
    B32-71 (ETHO) - Body ground
    		Always
    		10 kΩ or higher
    Text in Illustration
    *1
    		Front view of wire harness connector
    (to ECM)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.REPLACE ECM

  1. Replace the ECM (RAV4_ACA30 RM0000017UO01KX.html).


NEXT


5.PERFORM INITIALIZATION
NOTICE:
  1. Performing reset memory will clear the learned values of both the yaw rate sensor assembly*1 or deceleration sensor*2 (deceleration sensor 0 point calibration) and CVT oil pressure (CVT oil pressure calibration). Make sure to perform reset memory, yaw rate sensor assembly*1 or deceleration sensor*2 0 point calibration and CVT oil pressure calibration when replacing any of the parts shown in the following table:
    Replaced Part
    1. Continuously variable transaxle assembly
    2. ECM
    3. Oil pressure sensor
    4. Yaw rate sensor assembly (w/ VSC)
    5. Deceleration sensor (w/o VSC)
    6. Brake actuator assembly (skid control ECU)
  2. After performing reset memory, always perform yaw rate sensor assembly*1 or deceleration sensor*2 (deceleration sensor 0 point) calibration first, and then CVT oil pressure calibration.
  3. Always perform 0 point calibration with the vehicle on level ground.
  4. Do not shake or vibrate the vehicle during 0 point calibration.

  1. Using the intelligent tester, perform reset memory, deceleration sensor 0 point calibration and CVT oil pressure calibration (RAV4_ACA30 RM000003UQR002X.html).

  1. Check that no DTC is stored.


NEXT

END

6.REPLACE ECM

  1. Replace the ECM (RAV4_ACA30 RM0000017UO01KX.html).


NEXT


7.PERFORM INITIALIZATION
NOTICE:
  1. Performing reset memory will clear the learned values of both the yaw rate sensor assembly*1 or deceleration sensor*2 (deceleration sensor 0 point calibration) and CVT oil pressure (CVT oil pressure calibration). Make sure to perform reset memory, yaw rate sensor assembly*1 or deceleration sensor*2 0 point calibration and CVT oil pressure calibration when replacing any of the parts shown in the following table:
    Replaced Part
    1. Continuously variable transaxle assembly
    2. ECM
    3. Oil pressure sensor
    4. Yaw rate sensor assembly (w/ VSC)
    5. Deceleration sensor (w/o VSC)
    6. Brake actuator assembly (skid control ECU)
  2. After performing reset memory, always perform yaw rate sensor assembly*1 or deceleration sensor*2 (deceleration sensor 0 point) calibration first, and then CVT oil pressure calibration.
  3. Always perform 0 point calibration with the vehicle on level ground.
  4. Do not shake or vibrate the vehicle during 0 point calibration.

  1. Using the intelligent tester, perform reset memory, deceleration sensor 0 point calibration and CVT oil pressure calibration (RAV4_ACA30 RM000003UQR002X.html).

  1. Check that no DTC is stored.


NEXT

END

8.REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY

  1. Replace the continuously variable transaxle assembly (RAV4_ACA30 RM00000192D01ZX.html).


NEXT


9.PERFORM INITIALIZATION
NOTICE:
  1. Performing reset memory will clear the learned values of both the yaw rate sensor assembly*1 or deceleration sensor*2 (deceleration sensor 0 point calibration) and CVT oil pressure (CVT oil pressure calibration). Make sure to perform reset memory, yaw rate sensor assembly*1 or deceleration sensor*2 0 point calibration and CVT oil pressure calibration when replacing any of the parts shown in the following table:
    Replaced Part
    1. Continuously variable transaxle assembly
    2. ECM
    3. Oil pressure sensor
    4. Yaw rate sensor assembly (w/ VSC)
    5. Deceleration sensor (w/o VSC)
    6. Brake actuator assembly (skid control ECU)
  2. After performing reset memory, always perform yaw rate sensor assembly*1 or deceleration sensor*2 (deceleration sensor 0 point) calibration first, and then CVT oil pressure calibration.
  3. Always perform 0 point calibration with the vehicle on level ground.
  4. Do not shake or vibrate the vehicle during 0 point calibration.

  1. Using the intelligent tester, perform reset memory, deceleration sensor 0 point calibration and CVT oil pressure calibration (RAV4_ACA30 RM000003UQR002X.html).

  1. Check that no DTC is stored.


NEXT

END