DTC C124A-00: Non-learning of the Braking System information [08/2019 - ]: Procedure

1. Check that the proper ECM is installed.

   OK

   Proper ECM is installed.

2. Check if the ECM was replaced before the DTC was stored.

   OK

   ECM was not replaced

   Result

   Result	Proceed to
   OK	A
   NG (A proper ECM is not installed and/or the ECM was replaced.)	B

Result: 

B 

REPLACE ECM. Refer to  REMOVAL [08/2015 - ] 

Result: 

A 

See step  2

1. Check that the proper brake actuator assembly is installed.

   OK

   Proper brake actuator assembly is installed.

2. Check if the brake actuator assembly was replaced before the DTC was recorded.

   OK

   The brake actuator assembly was not replaced.

   Result

   Result	Proceed to
   OK	A
   NG (A proper brake actuator assembly is not installed.)	B
   NG (The brake actuator assembly was replaced.)	C

Result: 

B 

REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to  REMOVAL [08/2019 - ] 

Result: 

C 

See step  4

Result: 

A 

See step  3

1. Clear the DTC.

   Refer to DTC CHECK / CLEAR [08/2019 - ]

2. Check if the same DTC is recorded.

   Refer to DTC CHECK / CLEAR [08/2019 - ]

   Result

   Proceed to
   DTC C124A-00 is not output
   DTC C124A-00 is output

Result: 

DTC C124A-00 is not output 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ] 

Result: 

DTC C124A-00 is output 

REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to  REMOVAL [08/2019 - ] 

1. After replacing the skid control ECU (brake actuator assembly), check that "Calibration" is performed.

   HINT: 

   If a new skid control ECU (brake actuator assembly) was installed, C1210-54 and C051D-54 are output before "Calibration" is performed.

   Result

   Result	Proceed to
   Calibration performed	A
   Calibration not performed	B

Result: 

A 

REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to  REMOVAL [08/2019 - ] 

Result: 

B 

PERFORM CALIBRATION. Refer to  CALIBRATION [08/2019 - ]