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 |
Lost Communication with ECM / PCM "A" (U0100-U0142,U0155)
DESCRIPTION
These DTCs are stored when the clearance warning ECU assembly cannot receive
and recognize several signals via the CAN communication system.
DTC No.
DTC Detection Condition
Trouble Area
U0100
Lost Communication with ECM / P ...
Precaution
PRECAUTION
1. The navigation system uses an SD card containing data such as map data.
Text in Illustration
*a
SD Card
2. Precaution for removing the SD card
NOTICE:
The SD card contains map data and various programs for the navigation
system.
With ...
Precaution
PRECAUTION
HANDLING PRECAUTION FOR CRUISE CONTROL SYSTEM
(a) Turn the cruise control system off using the cruise control main switch (ON-OFF
button) when not using the cruise control system.
(b) Be careful as the vehicle speed increases when driving downhill with the
cruise control system con ...