Toyota Corolla Cross: Yaw Rate Sensor Wrong Installation (X0456)
DESCRIPTION
The airbag ECU assembly has a built-in yaw rate and acceleration sensor and detects the vehicle condition.
|
Code |
Tester Display |
Measurement Item |
Trouble Area |
|---|---|---|---|
|
X0456 |
Yaw Rate Sensor Wrong Installation |
History of yaw rate sensor (airbag ECU assembly) being installed incorrectly |
|
PROCEDURE
|
1. |
CHECK FOR DTCs (HEALTH CHECK) |
(a) Perform the Health Check using the GTS.
|
Result |
Proceed to |
|---|---|
|
DTCs are not output |
A |
|
DTCs are output |
B |
| B | .gif)
|
GO TO DIAGNOSTIC TROUBLE CODE CHART |
|
.gif)
|
2. |
READ VALUE USING GTS (YAW RATE SENSOR VALUE) |
(a) Check Data List item "yaw rate sensor value".
Chassis > Brake/EPB > Data List|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Yaw Rate Sensor Value |
Yaw rate sensor |
Min.: -128°/s, Max.: 127°/s |
Vehicle stopped: 0°/s Turning right: -128 to 0°/s Turning left: 0 to 127°/s |
- |
|
Tester Display |
|---|
|
Yaw Rate Sensor Value |
|
Result |
Proceed to |
|---|---|
|
NG (The yaw rate and acceleration sensor (airbag ECU assembly) output value is 0°/s when the vehicle is stationary, but the value fluctuates when turning.) |
A |
|
NG (The yaw rate and acceleration sensor (airbag ECU assembly) output value is not 0°/s when the vehicle is stationary.) |
B |
|
OK |
C |
| B |
|
REPLACE AIRBAG ECU ASSEMBLY |
| C |
|
USE SIMULATION METHOD TO CHECK |
|
|
3. |
CHECK AIRBAG ECU ASSEMBLY INSTALLATION |
(a) Check that the yaw rate and acceleration sensor (airbag ECU assembly) has been installed properly.
Click here .gif)
OK:
The yaw rate and acceleration sensor (airbag ECU assembly) is tightened to the specified torque.
The yaw rate and acceleration sensor (airbag ECU assembly) is not installed in a tilted position.
| NG |
|
INSTALL AIRBAG ECU ASSEMBLY |
|
|
4. |
CLEAR VEHICLE CONTROL HISTORY (RoB) |
(a) Using the GTS, clear the Vehicle Control History (RoB).
Chassis > Brake/EPB > Utility|
Tester Display |
|---|
|
Vehicle Control History (RoB) |
|
|
5. |
PERFORM ZERO POINT CALIBRATION OF STEERING SENSOR |
(a) Drive the vehicle straight ahead at 35 km/h (22 mph) or more for at least 5 seconds.
| NEXT |
|
END |
READ NEXT:
Zero Point Calibration of Yaw Rate Sensor Undone (X204C)
DESCRIPTION
The airbag ECU assembly has a built-in yaw rate and acceleration
sensor.
Code
Tester Display
Measurement Item
Trouble Area
Output
Zero Point Calibration of Steering Angle Sensor Initialization Malfunction (X208A)
DESCRIPTION
Code
Tester Display
Measurement Item
Trouble Area
X208A
Zero Point Calibration of Steering Angle Sensor Initializat
TRAC does not Operate
DESCRIPTION
When TRAC or VSC is operating, the skid control ECU (brake actuator
assembly) blinks the slip indicator light to inform the driver that slippage occurred.
When in VSC off mode, or TRAC
SEE MORE:
How To Proceed With Troubleshooting
PROCEDURE
1. VEHICLE BROUGHT TO WORKSHOP
NEXT
2. CUSTOMER PROBLEM ANALYSIS
HINT: If the malfunction is not reproduced, perform a simulation test.
Click here
For the simulation test, reproduce the driving conditions that wer
Vehicle Lift And Support Locations
VEHICLE LIFT AND SUPPORT LOCATIONS
PRECAUTIONS ABOUT VEHICLE CONDITION WHEN RAISING VEHICLE
(a) The vehicle must be unloaded before jacking up or raising the vehicle. Never
jack up or raise a heavily loaded vehicle.
(b) When removing any heavy components, like the engine, transmission or transa
