DTC P0712: Transmission Fluid Temperature Sensor "A" Circuit Low Input; DTC P0713: Transmission Fluid Temperature Sensor "A" Circuit High Input [09/2014 - 11/2017]: Procedure
WARNING: This page is about a different car, the 2017 Lexus RC 350, 2017 Lexus RC 300, 2016 Lexus RC 350, 2016 Lexus RC 300, and 2015 Lexus RC 350. However, it is still accessible from the selected car via links, so may be relevant.
- INSPECT TRANSMISSION WIRE (ATF TEMPERATURE SENSOR)
- Disconnect the F47 transmission wire connector.
*a Component without harness connected
(Transmission Wire) - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition 9 (OIL) - 1 (E2) Always 79 Ω to 156 kΩ 9 (OIL) - Body ground Always 10 kΩ or higher 1 (E2) - Body ground 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:
NG
REPAIR OR REPLACE TRANSMISSION WIRE (ATF TEMPERATURE SENSOR). Refer to COMPONENTS [09/2014 - ]
Result:
OK
See step 2
- Disconnect the F47 transmission wire connector.
- CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)
- Connect the F47 transmission wire connector.
*a Rear view of wire harness connector
(to ECM) - Disconnect the F1 ECM connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition F1-29 (THO1) - F1-28 (E2) Always 79 Ω to 156 kΩ F1-29 (THO1) - Body ground Always 10 kΩ or higher F1-28 (E2) - Body ground Always 10 kΩ or higher Result
Proceed to OK NG
Result:
OK
REPLACE ECM. Refer to COMPONENTS [09/2014 - 10/2015] , or refer to COMPONENTS [10/2015 - 11/2017]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
- Connect the F47 transmission wire connector.