DTC Description

DTC DETECTION LOGIC

caution

When reading DTCs or communicating with ASC using Read All DTCs of the M.U.T.-IIISE, this DTC may be set as a past trouble. If this DTC is set due to the operation above, erase the DTC by "Diagnostic Trouble Code" of "EBA". Then check that this DTC is not set when reading DTC again and complete the diagnosis.

DTC Description		M.U.T.-III SE screen terms (Trouble diagnosis content)	DTC detection condition
C18F9	02	ASC CAN　Failure [Controller area network communication error(ASC)]	Diagnosis condition	Electric motor switch ON Power supply voltage is normal
			Signal (terminal)	CAN communication signal
			Threshold	The abnormal brake fluid signal is received from the ABS actuator and electric unit.
			Diagnosis delay time	Within 1 second

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.

CAN busline
ABS actuator and electric unit (control unit)

FAIL-SAFE

Stop the following operations.

Regenerative brake function

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn the electric motor switch OFF (Auto ACC function OFF) before conducting the next test.

2.CHECK DTC DETECTION

M.U.T.-III SE

Change the power supply mode of the electric motor switch to OFF (Auto ACC function OFF).
Change the power supply mode of the electric motor switch is ON (READY indicator: ON)
Execute “Diagnostic Trouble Code” for “EBA”.

Is DTC “C18F9-02” detected?

Refer to Diagnosis Procedure

INSPECTION END