Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Yaw Rate Sensor Wrong Installation (X0456)

Toyota Corolla Cross (2022-2024) Service Manual / Brake / Brake Control / Dynamic Control Systems / Electronically Controlled Brake System (for Gasoline Model) / 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
  • Yaw rate sensor (airbag ECU assembly) installed improperly
  • Yaw rate sensor (airbag ECU assembly)

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

GO TO DIAGNOSTIC TROUBLE CODE CHART
A

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

-
Chassis > Brake/EPB > Data List

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

A

3.

CHECK AIRBAG ECU ASSEMBLY INSTALLATION

(a) Check that the yaw rate and acceleration sensor (airbag ECU assembly) has been installed properly.

Click here

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

OK

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)
NEXT

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

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