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:
Installation
INSTALLATION
PROCEDURE
1. INSTALL HYDRAULIC BRAKE BOOSTER
(a) Install a new brake booster gasket onto the hydraulic brake booster.
(b) Install the hydraulic brake booster with the 4 nuts.
Torque:
14 N·m {145 kgf·cm, 10 ft·lbf}
(c) Using a union nut wrench, connect the 4 brake l ...
Diagnosis System
DIAGNOSIS SYSTEM
1. DESCRIPTION
(a) The transponder key ECU assembly controls the engine immobiliser system.
The engine immobiliser system data and Diagnostic Trouble Codes (DTCs) can be read
through the vehicle Data Link Connector 3 (DLC3).
2. CHECK DLC3
(a) Check the DLC3 (See page ).
3. ...
Motor Circuit Malfunction (C1428)
DESCRIPTION
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
C1428
Motor Circuit Malfunction
With the motor relay and motor fail-safe relay OFF, open or short in
motor circuit continues for 2 seconds o ...
