Toyota Tacoma (2015-2018) Service Manual: Front Differential Oil Temperature Sensor Circuit Low (P17C7)

Toyota Tacoma (2015-2018) Service Manual / Vf2cm Transfer / Touch Select 2-4 And High-low System / Front Differential Oil Temperature Sensor Circuit Low (P17C7)

DESCRIPTION

This DTC is output when a short to ground in the oil temperature sensor is detected.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
P17C7	Front Differential Oil Temperature Sensor Circuit Low	Diagnosis Condition: Ignition switch turned to ON Malfunction Status: Short to ground in the oil temperature sensor Malfunction Time: 1 second or more Other: 1 trip detection logic	Wire harness and connector 4 wheel drive control ECU Oil temperature sensor

WIRING DIAGRAM

PROCEDURE

1.	CHECK HARNESS AND CONNECTOR (4 WHEEL DRIVE CONTROL ECU AND OIL TEMPERATURE SENSOR - BODY GROUND)

(a) Disconnect the F13 4 wheel drive control ECU connector.

(b) Disconnect the F38 oil temperature sensor connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
F13-5 (DT) or F38-1 (DT) - Body ground	Always	10 kΩ or higher
F13-25 (DGND) or F38-2 (DGND) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

2.	INSPECT OIL TEMPERATURE SENSOR

(a) Disconnect the F38 oil temperature sensor connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
1 (DT) - 2 (DGND)	Always	120 to 240 kΩ

Text in Illustration

*a	Component without harness connected (Oil Temperature Sensor)

REPLACE 4 WHEEL DRIVE CONTROL ECU

REPLACE OIL TEMPERATURE SENSOR

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