DTC Description

DTC DETECTION LOGIC

DTC Description		M.U.T.-III SE screen terms (Trouble diagnosis content)	DTC detection condition
U2148	87	Timeout Monitoring of Frame VDC_A12	1	Diagnosis condition	Electric motor switch ON
				Signal (terminal)	CAN communication signal
				Threshold	When a CAN communication signal is not continuously transmitted to the ABS actuator and electric unit (control unit)
				Diagnosis delay time	2 seconds or more
			2	Diagnosis condition	Electric motor switch ON
				Signal (terminal)	CAN communication signal
				Threshold	When a CAN communication signal is not continuously received from the ABS actuator and electric unit (control unit).
				Diagnosis delay time	2 seconds or more

POSSIBLE CAUSE

note	Confirm 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 DTC	Active 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

Connect the all connectors.
Use the M.U.T.-III SE, then erase the DTC set in the "EBA".
Change the power supply mode of the electric motor switch to ON from OFF without depressing the brake pedal.
Use the M.U.T.-III SE, then check whether the DTC set in the "EBA".

Is DTC “U2148-87” detected?

INSPECTION END