DTC C124A-00: Non-learning of the Braking System information [10/2022 - ]: Procedure

1. Check that the proper ECM is installed.

   OK

   Proper ECM is installed.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE ECM. Refer to  REMOVAL [10/2022 - 11/2023]  , or refer to  REMOVAL [11/2023 - ] 

Result: 

OK 

See step  2

1. Check that the proper skid control ECU (brake actuator assembly) is installed.

   OK

   Proper skid control ECU (brake actuator assembly) is installed.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to  REMOVAL [10/2022 - 11/2023]  , or refer to  REMOVAL [11/2023 - ] 

Result: 

OK 

See step  3

1. Perform system information memorization.

   Refer to UTILITY [12/2019 - 11/2023] , or refer to UTILITY [11/2023 - ]

   Chassis > Brake/EPB > Utility 

   Tester Display
   Reset Memory

   Chassis > Brake/EPB > Utility 

   Tester Display
   Calibration

   HINT: 

   • If a new skid control ECU (brake actuator assembly) was installed, C1210-54 and C051D-54 are output before "Calibration" is performed.
   • After performing "Reset Memory" using the GTS to clear the memorized value of the skid control ECU (brake actuator assembly), DTCs C1210-54 and C051D-54 will be stored until system information memorization is performed.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  4

1. Clear the DTCs.

   Chassis > Brake/EPB > Clear DTCs 

2. Turn the ignition switch off.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  5

1. Based on the Freeze Frame Data and interview with the customer, attempt to reproduce the conditions when the malfunction occurred.
2. Check if the same DTC is output.

   Chassis > Brake/EPB > Trouble Codes 

   Result

   Result	Proceed to
   DTC C124A-00 is not output.	A
   DTC C124A-00 is output.	B

Result: 

A 

END 

Result: 

B 

REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to  REMOVAL [10/2022 - 11/2023]  , or refer to  REMOVAL [11/2023 - ]