DTC P0712: Transmission Fluid Temperature Sensor "A" Circuit Low Input; DTC P0713: Transmission Fluid Temperature Sensor "A" Circuit High Input [10/2017 - ]: Procedure

1. Disconnect the ECM connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to ECM)

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   C1-120 (THO1) - C1-119 (ETHO)	Always	79 Ω to 156 kΩ
   C1-120 (THO1) - Body ground and other terminals	Always	10 kΩ or higher
   C1-119 (ETHO) - Body ground and other terminals	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result:  1

OK 

REPLACE ECM. Refer to  COMPONENTS [11/2016 - ] 

Result:  2

NG 

See step  2

1. Disconnect the connector from the wiring harness connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   C1-120 (THO1) - C2-13 (OIL)	Always	Below 1 Ω
   C1-119 (ETHO) - C2-12 (E2)	Always	Below 1 Ω
   C1-120 (THO1) or C2-13 (OIL) - Body ground and other terminals	Always	10 kΩ or higher
   C1-119 (ETHO) or C2-12 (E2) - Body ground and other terminals	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result:  2

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result:  1

OK 

See step  3

1. Remove the wiring harness connector from the transaxle.

   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
   A-17 (E2) - A-18 (THO1)	Always	79 Ω to 156 kΩ
   A-17 (E2) - Body ground and other terminals	Always	10 kΩ or higher
   A-18 (THO1) - Body ground and other terminals	Always	10 kΩ or higher

   HINT: 

   If the resistance is out of the specified range with the ATF temperature 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

   Proceed to
   OK
   NG

Result:  1

OK 

REPLACE WIRING HARNESS CONNECTOR. Refer to  COMPONENTS [11/2016 - ] 

Result:  2

NG 

REPLACE TRANSMISSION WIRE (ATF TEMPERATURE SENSOR). Refer to  COMPONENTS [12/2013 - ]