DTC Description

DTC DETECTION LOGIC

DTC Description		M.U.T.-III SE screen terms (Trouble diagnosis content)	DTC detection condition
C18E4	88	BUS off CAN CH1 (CH1-CAN)	1	Diagnosis condition	Electric motor switch ON
				Signal (terminal)	CAN communication signal
				Threshold	When signals cannot be received from the electric driven intelligent brake unit via CAN bus line
				Diagnosis delay time	2 seconds or more
			2	Diagnosis condition	Electric motor switch ON
				Signal (terminal)	CAN communication signal
				Threshold	When signals sent by the electric driven intelligent brake unit via CAN bus line cannot be received
				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 electric driven intelligent brake unit if the DTC is stored DTC.

Active DTC

Stored DTC

FAIL-SAFE

Stop the following operations.

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 “C18E4-88” detected?

INSPECTION END