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:
Freeze Frame Data
FREEZE FRAME DATA
1. FREEZE FRAME DATA
(a) When a DTC is stored, the 4 wheel drive control ECU stores the current vehicle
state as Freeze Frame Data.
HINT:
Freeze Frame Data at the time a DTC is stored:
When the 4 wheel drive control ECU stores data at the time a DTC is stored, no
updates w ...
VSC OFF Switch Circuit
DESCRIPTION
The skid control ECU assembly is connected to the combination meter assembly
via CAN communication.
Pressing the VSC OFF switch turns off TRAC operation, and pressing and holding
this switch turns off TRAC and VSC operation.
If TRAC and VSC operations are turned off, the TRAC OFF ...
Short in Front Passenger Side Squib Circuit (B1805/52-B1808/52)
DESCRIPTION
The front passenger side squib circuit consists of the airbag sensor assembly
and the instrument panel passenger without door airbag assembly.
The circuit instructs the SRS to deploy when deployment conditions are met.
These DTCs are recorded when a malfunction is detected in the fr ...