DTC C13F2-1C: 4WD/AWD Rear Differential Oil Temperature Sensor Circuit Voltage Out of Range [12/2019 - ]: Procedure

1. Disconnect the M41 4WD ECU assembly connector.
2. Disconnect the s4 temperature sensor connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   M41-13 (THR+) - s4-1 (THR+)	Always	Below 1 Ω
   M41-21 (THR-) - s4-2 (THR-)	Always	Below 1 Ω
   M41-13 (THR+) or s4-1 (THR+) - Body ground and other terminals	Always	10 kΩ or higher
   M41-21 (THR-) or s4-2 (THR-) - Body ground and other terminals	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  2

1. Disconnect the s4 temperature sensor connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   1 (THR+) - 2 (THR-)	20°C (68°F)	0.9 to 30 kΩ

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component without harness connected (Temperature Sensor)

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE 4WD ECU ASSEMBLY. Refer to  REMOVAL [12/2019 - ] 

Result: 

NG 

REPLACE TEMPERATURE SENSOR. Refer to  DISASSEMBLY [12/2019 - ]