DESCRIPTION
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
---|---|---|---|
C1427 |
Motor Malfunction |
Actuator pump motor does not operate properly. |
|
WIRING DIAGRAM
Refer to DTCs C142B, C146C and C146D (See page ).
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. |
PERFORM ACTIVE TEST USING TECHSTREAM (MOTOR RELAY) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Chassis / ABS/VSC/TRAC / Active Test.
(e) According to the display on the Techstream, perform the Active Test.
ABS/VSC/TRAC
Tester Display |
Measurement Item |
Control Range |
Diagnostic Note |
---|---|---|---|
Motor Relay |
Motor relay |
Relay ON / OFF |
Operating sound of motor can be heard. Vehicle condition: Vehicle stopped |
(f) Check the operating sound of the motor relay when operating it with the Techstream.
Result
Result |
Proceed to |
---|---|
The operating sound is not heard |
A |
The operating sound is heard |
B |
B |
GO TO STEP 3 |
|
2. |
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:
|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (GND2 CIRCUIT) |
|
3. |
RECONFIRM DTC |
HINT:
This code is detected when a problem is identified in the brake actuator assembly. The motor relay is in the brake actuator assembly.
Therefore, motor relay unit inspection cannot be performed. Be sure to check if the DTC is output before replacing the brake actuator assembly.
(a) Reconnect the S1 skid control ECU (brake actuator assembly) connector.
(b) Clear the DTCs (See page ).
(c) Turn the ignition switch off.
(d) Start the engine.
(e) Drive the vehicle at a speed of 20 km/h (12 mph) or more for 30 seconds or more.
(f) Check if the same DTC is recorded (See page ).
HINT:
Result |
Proceed to |
---|---|
DTC C1427 is not output |
A |
DTC C1427 is output |
B |
A |
USE SIMULATION METHOD TO CHECK |
B |
REPLACE BRAKE ACTUATOR ASSEMBLY |
System Diagram
SYSTEM DIAGRAM
Communication Table
Sender
Receiver
Signal
Communication Method
Power window regulator master switch assembly*1
Main Body ECU (Multiplex Network Body ECU)
Door control switch signal
...
Installation
INSTALLATION
CAUTION / NOTICE / HINT
CAUTION:
Some of these service operations affect the SRS airbag system. Read
the precautionary notices concerning the SRS airbag system before servicing
(See page ).
If the side airbag was deployed, replace the front seat assembly with
...
Pressure Control Solenoid "A" Electrical (Shift Solenoid Valve SL1) (P0748)
DESCRIPTION
Changing from 1st to 6th is performed by the ECM turning shift solenoid valves
SL1, SL2, SL3 and SL4 on and off. If an open or short circuit occurs in any of the
shift solenoid valves, the ECM controls the remaining normal shift solenoid valves
to allow the vehicle to be operated ...