Toyota Tacoma (2015-2018) Service Manual: 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 |
|
|
WIRING DIAGRAM
Refer to DTC P17C7 (See page .gif)
).
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:
|
|
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
F13-5 (DT) or F13-25 (DGND) - Body ground |
Ignition switch ON |
Below 1 V |
|
*a |
Front view of wire harness connector (to 4 Wheel Drive Control ECU) |
| OK | .gif) |
REPLACE 4 WHEEL DRIVE CONTROL ECU |
|
.gif)
|
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.
(c) Measure the resistance according to the value(s) in the table below.
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 |
| OK | |
REPLACE OIL TEMPERATURE SENSOR |
| NG | |
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:
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms.
If multiple suspected areas are listed, the potential causes of the symptoms
are listed in order of probability in the "Suspected Area" column of the
table. Check each sy ...
Mirror Heater does not Operate with Rear Defogger Switch
DESCRIPTION
When the mirror heater switch on the air conditioning control assembly is pressed,
the operation signal is sent to the air conditioning amplifier assembly. When the
air conditioning amplifier assembly receives the signal, it turns on a relay in
the air conditioning amplifier assem ...
High Power Supply Voltage Malfunction (C1417)
DESCRIPTION
If a malfunction is detected in the power supply circuit, the skid control ECU
(housed in the master cylinder solenoid) stores this DTC and the fail-safe function
prohibits ABS/VSC/TRAC operation.
This DTC is stored when the IG1 terminal voltage deviates from the DTC detection
co ...
