Toyota Tacoma 2015-2018 Service Manual: 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 or more. |
Brake actuator assembly (Motor circuit) |
WIRING DIAGRAM
Refer to DTCs C142B, C146C and C146D (See page
.gif)
).
CAUTION / NOTICE / HINT
NOTICE:
When replacing the skid control ECU (brake actuator assembly), perform zero point
calibration and store system information (See page
).
PROCEDURE
|
1. |
CHECK HARNESS AND CONNECTOR (GND2 TERMINAL) |
(a) Turn the ignition switch off.
(b) Make sure that there is no looseness at the locking part and the connecting part of the connectors.
(c) Disconnect the S1 skid control ECU (brake actuator assembly) connector.
|
(d) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
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| OK | .gif) |
REPLACE BRAKE ACTUATOR ASSEMBLY |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR (GND2 CIRCUIT) |
Motor Power Supply Voltage Circuit (C142B-C146D)
DESCRIPTION
The motor relay and motor fail-safe relay are built into the brake actuator assembly.
During ABS, TRAC, VSC, or brake assist operation, the skid control ECU (brake
actuator assembly) t ...
Steering Angle Sensor Power Source Voltage Malfunction (C1432)
DESCRIPTION
The skid control ECU (brake actuator assembly) outputs this DTC when it receives
a sensor power source malfunction signal from the steering angle sensor.
DTC No.
...
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 ...
Low Output Signal of Front Speed Sensor RH (Test Mode DTC) (C1271,C1272,C1401,C1402)
DESCRIPTION
The speed sensor detects the wheel speed and sends the appropriate signals to
the skid control ECU (master cylinder solenoid). These signals are used for brake
control.
The speed sensor rotors have rows of alternating N and S magnetic poles and their
magnetic fields change when t ...
Removal
REMOVAL
PROCEDURE
1. REMOVE STEERING PAD
(See page
)
2. REMOVE STEERING WHEEL ASSEMBLY
3. REMOVE LOWER STEERING COLUMN COVER
4. REMOVE UPPER STEERING COLUMN COVER
5. REMOVE SPIRAL CABLE SUB-ASSEMBLY WITH SENSOR
(a) Slide the slider and disconnect the airbag connect ...