DTC C051D-54: Multi-axis Acceleration Sensor Module "A" Missing Calibration [06/2018 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Enter the following menus: Chassis / Brake/EPB / Utility / Reset Memory.
4. Clear the zero point calibration data and system information.

   Refer to UTILITY [06/2018 - ]

   Chassis > Brake/EPB > Utility 

   Tester Display
   Reset Memory

5. Perform acceleration sensor zero point calibration and store system information memorization.

   Refer to UTILITY [06/2018 - ]

   Chassis > Brake/EPB > Utility 

   Tester Display
   Calibration

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  2

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Operate the Techstream to clear the codes. Enter the following menus: Chassis / Brake/EPB / Trouble Codes.

   Chassis > Brake/EPB > Clear DTCs 

4. Press the DTC clear button.
5. Turn the engine switch off.
6. Turn the engine switch on (IG).
7. Read the DTCs following the prompts on the Techstream. Enter the following menus: Chassis / Brake/EPB / Trouble Codes.

   Chassis > Brake/EPB > Trouble Codes 

8. Check if the same DTC is output.

   Result

   Result	Proceed to
   C051D-54 is not output	A
   C051D-54 is output	B

Result: 

A 

END 

Result: 

B 

See step  3

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

   Refer to INSTALLATION [06/2018 - 08/2020] , or refer to INSTALLATION [08/2020 - ]

   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 [06/2018 - 08/2020]  , or refer to  INSTALLATION [08/2020 - ] 

Result: 

OK 

See step  4

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Enter the following menus: Chassis / Brake/EPB / Data List.

   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	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

   Chassis > Brake/EPB > Data List 

   Tester Display
   Lateral G
   Forward and Rearward G

4. Check the acceleration sensor (airbag ECU assembly) output value displayed on the Techstream.

   OK

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

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to  REMOVAL [06/2018 - 08/2020]  , or refer to  REMOVAL [08/2020 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

Result: 

NG 

REPLACE AIRBAG ECU ASSEMBLY. Refer to  REMOVAL [06/2018 - 08/2020]  , or refer to  REMOVAL [08/2020 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ]