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DTC Description
 
 
DTC DETECTION LOGIC
DTC Description
M.U.T.-III SE screen terms
(Trouble diagnosis content)
DTC detection condition
U214887Timeout Monitoring of Frame VDC_A121Diagnosis conditionElectric motor switch ON
Signal (terminal)CAN communication signal
ThresholdWhen a CAN communication signal is not continuously transmitted to the ABS actuator and electric unit (control unit)
Diagnosis delay time2 seconds or more
2Diagnosis conditionElectric motor switch ON
Signal (terminal)CAN communication signal
ThresholdWhen a CAN communication signal is not continuously received from the ABS actuator and electric unit (control unit).
Diagnosis delay time2 seconds or more
 
 
POSSIBLE CAUSE
noteConfirm that the DTC is stored DTC or active DTC. If the DTC is active DTC, proceed to trouble diagnosis procedure. If the DTC is stored DTC, erase the DTC. Do not replace the ABS actuator and electric unit (control unit) if the DTC is stored DTC.
Stored DTCActive DTC
  • CAN busline
  • Electric driven intelligent brake unit
  • ABS actuator and electric unit (control unit)
  • Harness or connector
  • CAN busline
  • Electric driven intelligent brake unit
  • ABS actuator and electric unit (control unit)
 
 
FAIL-SAFE
Stop the following operations.
  • Regenerative brake function
  • 4-wheel automatic pressure application function operated due to external brake request (FCM, ACC, innovative pedal operation mode, etc.)
 
 
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If other “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn the electric motor switch OFF before conducting the next test.
:
 
2.CHECK DTC DETECTION
M.U.T.-III SE
  1. Connect the all connectors.
  2. Use the M.U.T.-III SE, then erase the DTC set in the "EBA".
  3. Change the power supply mode of the electric motor switch to ON from OFF without depressing the brake pedal.
  4. Use the M.U.T.-III SE, then check whether the DTC set in the "EBA".
Is DTC “U2148-87” detected?
INSPECTION END