Toyota Tacoma (2015-2018) Service Manual: Transfer L4 Position Switch Circuit (C1268)
DESCRIPTION
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
C1268 |
Transfer L4 Position Switch Circuit |
Either of the following is detected:
|
|
HINT:
DTC will be output when conditions for either of the patterns in the table above are met.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
When replacing the skid control ECU (brake actuator assembly), perform zero point
calibration and store system information (See page
.gif)
).
PROCEDURE
|
1. |
INSPECT L4 DETECTION SWITCH (TRANSFER SHIFT ACTUATOR ASSEMBLY) |
(a) Inspect the transfer shift actuator assembly (See page
).
OK:
The transfer shift actuator assembly is normal.
| NG | .gif) |
REPLACE TRANSFER SHIFT ACTUATOR ASSEMBLY |
|
.gif)
|
2. |
CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - L4 DETECTION SWITCH) |
(a) Disconnect the S1 skid control ECU (brake actuator assembly) connector.
(b) Disconnect the T4 L4 detection switch (Transfer shift actuator assembly) connector.
(c) Measure the resistance according to the value(s) in the table below
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
S1-5 (EXI4) - T4-9 |
Always |
Below 1 Ω |
|
S1-5 (EXI4) - Body ground |
Always |
10 kΩ or higher |
|
T4-10 - Body ground |
Always |
Below 1 Ω |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR (L4 DETECTION SWITCH CIRCUIT) |
|
|
3. |
CHECK HARNESS AND CONNECTOR (HDCS TERMINAL) |
|
(a) Disconnect the skid control ECU (brake actuator assembly) connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
S1-27 (HDCS) - Body ground |
Always |
Below 1 Ω |
|
*a |
Front view of wire harness connector (to Skid Control ECU (Brake Actuator Assembly)) |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
4. |
RECONFIRM DTC |
(a) Clear the DTC (See page
).
(b) Check if the same DTC is recorded (See page
).
|
Result |
Proceed to |
|---|---|
|
DTC is output |
A |
|
DTC is not output |
B |
| A | |
REPLACE BRAKE ACTUATOR ASSEMBLY |
| B | |
USE SIMULATION METHOD TO CHECK |
Vehicle Control History
VEHICLE CONTROL HISTORY
VEHICLE CONTROL HISTORY
(a) A part of the control history can be confirmed using the vehicle control
history.
Click here ...
Steering Angle Sensor Zero Point Malfunction (C1290)
DESCRIPTION
The skid control ECU (brake actuator assembly) acquires steering angle sensor
zero point every time the ignition switch is turned ON and the vehicle is driven
at 35 km/h (22 mph) or m ...
Other materials:
Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter
DESCRIPTION
The No. 1 stereo jack adapter assembly sends the sound signal from an external
device to the radio and display receiver assembly via this circuit.
If there is an open or short in the circuit, sound cannot be heard from the speakers
even if there is no malfunction in the radio and d ...
Power Supply Drive Circuit (C1257)
DESCRIPTION
The motor relay (semiconductor relay) is built into the hydraulic brake booster
and drives the pump motor based on a signal from the skid control ECU (master cylinder
solenoid).
DTC No.
DTC Detecting Condition
Trouble Areas
C1257
...
Clutch Accumulator
Components
COMPONENTS
ILLUSTRATION
Installation
INSTALLATION
PROCEDURE
1. INSTALL CLUTCH ACCUMULATOR ASSEMBLY
(a) Install the clutch accumulator assembly to the manual transmission assembly
with the 3 bolts.
Torque:
12 N·m {120 kgf·cm, 9 ft·lbf}
(b) Using a union nut wrench, co ...
