DTC P0712: Transmission Fluid Temperature Sensor "A" Circuit Low Input; DTC P0713: Transmission Fluid Temperature Sensor "A" Circuit High Input [06/2015 - ]: Procedure

1. Warm up the engine.
2. Connect the Techstream to the DLC3.
3. Turn the ignition switch to ON.
4. Turn the Techstream on.
5. Enter the following menus: Powertrain / Engine and ECT / Data List.
6. According to the display on the Techstream, read the Data List.

   Powertrain > Engine and ECT > Data List 

   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.: 150°C (302°F)	Approximately 100°C (212°F): After stall speed test 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.

   Powertrain > Engine and ECT > Data List 

   Tester Display
   A/T Oil Temperature 1

   Result

   Result	Proceed to
   Data List value is not normal	A
   Data List value is normal	B

Result:  2

B 

See step  6

Result:  1

A 

See step  2

1. Disconnect the B20 transmission wire connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component without harness connected (Transmission Wire)

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   1 (THO) - 7 (E2)	Always	79 Ω to 156 kΩ
   1 (THO) - Body ground and other terminals	Always	10 kΩ or higher
   7 (E2) - Body ground and other terminals	Always	10 kΩ or higher

   HINT: 

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

   CVT Fluid Temperature	Specified Condition
   10°C (50°F)	5.6 to 7.3 kΩ
   25°C (77°F)	3.5 kΩ
   110°C (230°F)	0.22 to 0.27 kΩ

3. Connect the B20 transmission wire connector.

   Result

   Proceed to
   OK
   NG

Result:  2

NG 

See step  5

Result:  1

OK 

See step  3

1. Disconnect the B38 ECM connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   B38-95 (THO1) - B38-96 (ETHO)	Always	79 Ω to 156 kΩ
   B38-95 (THO1) - Body ground and other terminals	Always	10 kΩ or higher
   B38-96 (ETHO) - Body ground and other terminals	Always	10 kΩ or higher

3. Connect the B38 ECM connector.

   Result

   Proceed to
   OK
   NG

Result:  2

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR (TRANSMISSION WIRE - ECM) 

Result:  1

OK 

See step  4

1. Replace the ECM.

   Refer to COMPONENTS [06/2015 - ]

   Result

   Proceed to
   NEXT

Result:  1

NEXT 

PERFORM INITIALIZATION. Refer to  INITIALIZATION [06/2015 - ] 

1. Replace the continuously variable transaxle assembly.

   Refer to COMPONENTS [06/2015 - ]

   Result

   Proceed to
   NEXT

Result:  1

NEXT 

PERFORM INITIALIZATION. Refer to  INITIALIZATION [06/2015 - ] 

1. Replace the ECM.

   Refer to COMPONENTS [06/2015 - ]

   Result

   Proceed to
   NEXT

Result:  1

NEXT 

PERFORM INITIALIZATION. Refer to  INITIALIZATION [06/2015 - ]