Zero Point Calibration of Yaw Rate Sensor Undone (X204C) [12/2023 - ]: Procedure

1. Using the GTS, perform the Health Check.

   Result

   Result	Proceed to
   DTCs are not output	A
   DTCs are output	B

Result: 

B 

GO TO DIAGNOSTIC TROUBLE CODE CHART 

Result: 

A 

See step  2

1. Clear the zero point value for the yaw rate and acceleration sensor.

   Refer to RESET MEMORY / CALIBRATION [12/2023 - ]

   Chassis > Brake/EPB > Utility 

   Tester Display
   Reset Memory

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  3

1. Perform zero point calibration of the yaw rate and acceleration sensor.

   Refer to RESET MEMORY / CALIBRATION [12/2023 - ]

   Chassis > Brake/EPB > Utility 

   Tester Display
   Calibration

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  4

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

   Chassis > Brake/EPB > Utility 

   Tester Display
   Vehicle Control History (RoB)

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  5

1. Perform a road test under the same malfunction conditions recreated based on the Freeze Frame Data or customer problem analysis.
2. Using the GTS, check for Vehicle Control History (RoB).

   Chassis > Brake/EPB > Utility 

   Tester Display
   Vehicle Control History (RoB)

   Result

   Result	Proceed to
   X204C is not output	A
   X204C is output	B

Result: 

A 

END 

Result: 

B 

See step  6

1. Turn the ignition switch off.
2. Check that the yaw rate and acceleration sensor (airbag ECU assembly) has been installed properly.

   Refer to INSTALLATION [12/2023 - ]

   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.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

INSTALL AIRBAG ECU ASSEMBLY CORRECTLY. Refer to  INSTALLATION [12/2023 - ] 

Result: 

OK 

See step  7

1. Check the yaw rate and acceleration sensor output value displayed on the GTS.

   Chassis > Brake/EPB > 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	Turning left: 0.000 to 24.908 m/s2
   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/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/EPB > Data List 

   Tester Display
   Lateral G
   Forward and Rearward G
   Yaw Rate Sensor Value

   OK

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

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to  REMOVAL [12/2023 - ] 

Result: 

NG 

REPLACE AIRBAG ECU ASSEMBLY. Refer to  REMOVAL [12/2023 - ]