Toyota Tacoma (2015-2018) Service Manual: Front Differential Oil Temperature Sensor Circuit High (P17C8)

Toyota Tacoma (2015-2018) Service Manual / Vf2cm Transfer / Touch Select 2-4 And High-low System / Front Differential Oil Temperature Sensor Circuit High (P17C8)

DESCRIPTION

This DTC is output when a short to B+ or open circuit in the oil temperature sensor is detected.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
P17C8	Front Differential Oil Temperature Sensor Circuit High	Diagnosis Condition: Ignition switch turned to ON Malfunction Status: Short to B+ or open circuit 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

Refer to DTC P17C7 (See page PROCEDURE ).

PROCEDURE

1.	CHECK OIL TEMPERATURE SENSOR

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

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
F13-5 (DT) - F13-25 (DGND)	Always	120 to 240 kΩ

Standard Voltage:

Tester Connection	Switch Condition	Specified Condition
F13-5 (DT) or F13-25 (DGND) - Body ground	Ignition switch ON	Below 1 V

Text in Illustration

*a	Front view of wire harness connector (to 4 Wheel Drive Control ECU)

REPLACE 4 WHEEL DRIVE CONTROL ECU

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

(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) - F38-1 (DT)	Always	Below 1 Ω
F13-25 (DGND) - F38-2 (DGND)	Always	Below 1 Ω

(d) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection	Switch Condition	Specified Condition
F13-5 (DT) or F38-1 (DT) - Body ground	Ignition switch ON	Below 1 V
F13-25 (DGND) or F38-2 (DGND) - Body ground	Ignition switch ON	Below 1 V

REPLACE OIL TEMPERATURE SENSOR

REPAIR OR REPLACE HARNESS OR CONNECTOR

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 Ar ...

Four Wheel Drive (4WD) Low Switch Circuit Range / Performance (P2772)

DESCRIPTION This DTC is output when a malfunction in the L4 detection switch is detected. DTC No. Detection Item DTC Detection Condition Trouble Area ...

Other materials:

Rear Power Outlet Socket
Components COMPONENTS ILLUSTRATION ILLUSTRATION Installation INSTALLATION PROCEDURE 1. INSTALL POWER OUTLET SOCKET ASSEMBLY (a) Install the clamp. (b) Connect the connector. (c) Using a torx socket wrench T30, install the 4 screws and the power outlet socket assemb ...

Poor Sound Quality in All Modes (Low Volume)
PROCEDURE 1. CHECK AUDIO SETTINGS (a) Set Treble, Mid and Bass to the initial values and check that sound is normal. OK: Malfunction disappears. HINT: Sound quality adjustment measures vary according to the type of amplifier. OK END ...

Washer Level Warning Switch
Components COMPONENTS ILLUSTRATION Inspection INSPECTION PROCEDURE 1. INSPECT LEVEL WARNING SWITCH ASSEMBLY HINT: This check should be performed with the windshield washer motor and pump assembly installed on the washer jar. (a) Fill the washer jar with washer fluid. (b) ...