Toyota Yaris: Vehicle Stability Control System / Zero Point Calibration of Yaw Rate Sensor Undone (X204C)

Toyota Yaris XP210 (2020-2022) Reapir and Service Manual / Brake / Brake Control / Dynamic Control Systems / Vehicle Stability Control System / Zero Point Calibration of Yaw Rate Sensor Undone (X204C)

DESCRIPTION

Code

Tester Display

Measurement Item

Trouble Area

RoB Output from

X204C

Zero Point Calibration of Yaw Rate Sensor Undone

History of incomplete yaw rate sensor zero point calibration

  • Sensor installation
  • Yaw rate and acceleration sensor (airbag sensor assembly)

Brake

CAUTION / NOTICE / HINT

NOTICE:

  • After replacing the skid control ECU (brake actuator assembly), perform "Calibration".

    Click here

  • If the yaw rate and acceleration sensor (airbag sensor assembly) was replaced or reinstalled, perform "Calibration".

    Click here

PROCEDURE

1.

CHECK FOR DTCs (HEALTH CHECK)

(a) Using the GTS, perform the Health Check.

Result

Proceed to

DTCs are not output

A

DTCs are output

B

B

GO TO DIAGNOSTIC TROUBLE CODE CHART

A

2.

PERFORM ZERO POINT CALIBRATION OF YAW RATE AND ACCELERATION SENSOR

(a) Perform zero point calibration of the yaw rate and acceleration sensor.

Chassis > Brake > Utility

Tester Display

Reset Memory

Chassis > Brake > Utility

Tester Display

Calibration

NEXT

3.

CLEAR VEHICLE CONTROL HISTORY (RoB)

(a) Using the GTS, clear the Vehicle Control History (RoB).

Chassis > Brake > Utility

Tester Display

Vehicle Control History (RoB)

NEXT

4.

CHECK VEHICLE CONTROL HISTORY (RoB)

(a) Perform a road test under the same malfunction conditions recreated based on the Freeze Frame Data or customer problem analysis.

(b) Using the GTS, check for Vehicle Control History (RoB).

Chassis > Brake > Utility

Tester Display

Vehicle Control History (RoB)

Result

Proceed to

X204C is not output

A

X204C is output

B

A

END

B

5.

CHECK AIRBAG SENSOR ASSEMBLY INSTALLATION

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

OK:

The sensor should be tightened to the specified torque.

The sensor is not installed in a tilted position.

NG

INSTALL AIRBAG SENSOR ASSEMBLY CORRECTLY

OK

6.

READ VALUE USING GTS

(a) Select the Data List using the GTS.

Chassis > Brake > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Lateral G

Lateral G

Min.: -25.105 m/s2, Max.: 24.908 m/s2

Turning right: -25.105 to 0.000 m/s2

Turning left: 0.000 to 24.908 m/s2

During turning: Changes in proportion with lateral acceleration

Forward and Rearward G

Forward and rearward G

Min.: -25.105 m/s2, Max.: 24.908 m/s2

During deceleration: -25.105 to 0.000 m/s2

During acceleration: 0.000 to 24.908 m/s2

During acceleration/deceleration: Changes in proportion with acceleration

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 > Data List

Tester Display

Lateral G

Forward and Rearward G

Yaw Rate Sensor Value

OK:

The yaw rate and acceleration sensor (airbag sensor assembly) output value is normal.

OK

REPLACE BRAKE ACTUATOR ASSEMBLY

NG

REPLACE AIRBAG SENSOR ASSEMBLY

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    Allowing a person to ride in the luggage compartment/trunk is dangerous. The person in the luggage compartment/trunk could be seriously injured or killed during sudden braking or a collision.

    Do not drive with the liftgate/trunk lid open

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