DTC C1240-00: Yaw Rate Sensor / Multi-axis Acceleration Sensor Module "A" [09/2018 - 10/2023]: Procedure

1. Check that the part number of the installed acceleration sensor (yaw rate sensor) is correct.

   OK

   Acceleration sensor (yaw rate sensor) installed in the vehicle has the correct part number.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE YAW RATE SENSOR. Refer to  REMOVAL [09/2018 - 10/2020]  , or refer to  REMOVAL [10/2020 - 11/2021]  , or refer to  REMOVAL [11/2021 - 10/2023] 

Result: 

OK 

See step  2

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [09/2018 - 10/2023]

   Chassis > Brake > Clear DTCs 

2. Turn the engine switch off.
3. Turn the engine switch on (IG).
4. Check if the same DTC is output.

   Refer to DTC CHECK / CLEAR [09/2018 - 10/2023]

   Chassis > Brake > Trouble Codes 

   Result

   Result	Proceed to
   DTC C1240-00 is output.	A
   DTC C1240-00 is not output.	B

Result: 

A 

REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to  REMOVAL [09/2018 - 10/2020]  , or refer to  REMOVAL [10/2020 - 10/2022]  , or refer to  REMOVAL [10/2022 - 10/2023] 

Result: 

B 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2018 - 10/2020]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2020 - 11/2021]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - 10/2022]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - 10/2023]