DESCRIPTION
The skid control ECU (master cylinder solenoid) receives signals from the yaw rate and acceleration (airbag sensor assembly) via the CAN communication system.
The airbag sensor assembly has a built-in yaw rate and acceleration sensor and detects the vehicle's condition using 2 circuits (GL1, GL2).
If there is trouble in the bus lines between the yaw rate and acceleration sensor (airbag sensor assembly) and the CAN communication system, DTCs U0123 (yaw rate sensor communication trouble) and U0124 (acceleration sensor communication trouble) are stored.
These DTCs are also output when calibration has not been completed.
DTC Code |
DTC Detection Condition |
Trouble Area |
---|---|---|
C1381 |
At a vehicle speed of more than 3 km/h (2 mph), the acceleration sensor power source malfunction signal is received for 10 seconds or more. |
|
WIRING DIAGRAM
Refer to DTCs C1232, C1243 and C1245 (See page ).
CAUTION / NOTICE / HINT
NOTICE:
PROCEDURE
1. |
CHECK CAN COMMUNICATION SYSTEM |
(a) Check for DTCs (See page ).
Result
Result |
Proceed to |
---|---|
CAN DTC is not output |
A |
CAN DTC is output |
B |
B |
GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) |
|
2. |
CHECK HARNESS AND CONNECTOR (IG2, E1, E2 TERMINAL) |
(a) Disconnect the yaw rate and acceleration sensor (airbag sensor assembly) connector.
(b) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
A21-25 (E1) - Body ground |
Always |
Below 1 Ω |
A21-26 (E2) - Body ground |
Always |
Below 1 Ω |
*a |
Front view of wire harness connector (to Yaw Rate and Acceleration Sensor (Airbag Sensor Assembly)) |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. |
RECONFIRM DTC |
(a) Reconnect the yaw rate and acceleration sensor (airbag sensor assembly) connector.
(b) Clear the DTCs (See page ).
(c) Start the engine.
(d) Perform a road test.
(e) Check if the same DTC is output (See page ).
Result
Result |
Proceed to |
---|---|
DTC C1381 is not output |
A |
DTC C1381 is output |
B |
A |
USE SIMULATION METHOD TO CHECK |
B |
REPLACE AIRBAG SENSOR ASSEMBLY |
Components
COMPONENTS
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
...
Inspection
INSPECTION
PROCEDURE
1. INSPECT TIE ROD END SUB-ASSEMBLY
(a) Flip the ball joint stud back and forth 5 times as shown in the illustration
before installing the nut.
(b) Using a torque wrench, turn the nut continuously at a rate of 2 to 4 seconds
per turn and check the torque reading on the ...
Diagnosis System
DIAGNOSIS SYSTEM
CHECK DLC3
(a) Check the DLC3.
Click here
FUNCTION OF WARNING INDICATOR AND MESSAGE
(a) If the pre-collision system is not functioning properly, the driver is warned
by the PCS warning light and a warning message displayed on the multi-information
display.
Mas ...