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:
Brake Switch "A" Circuit (P0571)
DESCRIPTION
Detection condition 1:
When the brake pedal is depressed, the stop light switch assembly outputs
a signal to the ECM. When the ECM receives the signal, it cancels control
of vehicle speed by the dynamic radar cruise control system. The fail-safe
function operates to ...
Headlight Dimmer Switch Circuit
DESCRIPTION
The main body ECU (multiplex network body ECU) receives the following switch
information:
Light control switch position is off (DRL OFF), tail, head or AUTO (DRL).
Dimmer switch position is high, low or high flash (pass).
Front fog light switch position is on or off ...
Inspection
INSPECTION
PROCEDURE
1. INSPECT TRANSMISSION FLOOR SHIFT ASSEMBLY (w/o Smart Key System)
HINT:
If the results of the following inspections are as specified but a malfunction
has occurred, replace the transmission floor shift assembly.
(a) Inspect the wire harness.
(1) Disconnect the shift lo ...
