DTC U0401:00 [ABS HU/CM]

id040260887900

DTC	U0401:00	Signal error from PCM
DETECTION CONDITION		•  Error detected in signal from PCM via CAN communication
FAIL-SAFE FUNCTION		Refer to DTC TABLE. (See DTC TABLE [ABS HU/CM].)
POSSIBLE CAUSE		•  PCM malfunction
SYSTEM WIRING DIAGRAM		—

Diagnostic Procedure

Step	Inspection		Action
1	VERIFY PCM DTC •  Using the M-MDS, perform the PCM DTC inspection. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 1.3, SKYACTIV-G 1.5].) •  Are any DTCs present?	Yes	Go to applicable DTC inspection. (See DTC TABLE [SKYACTIV-G 1.3, SKYACTIV-G 1.5].) DTC troubleshooting completed, then go to the next step.
		No	Go to the next step.
2	VERIFY DTC TROUBLESHOOTING COMPLETED •  Using the M-MDS, clear the DTC from the ABS HU/CM. (See CLEARING DTC [ABS HU/CM].) •  Using the M-MDS, perform the ABS HU/CM DTC inspection. (See DTC INSPECTION [ABS HU/CM].) •  Is the same DTC present?	Yes	Repeat the inspection from Step1 If the malfunction recurs, replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 1.3, SKYACTIV-G 1.5].)
		No	Go to the next step.
3	VERIFY NO DTC IS PRESENT •  Are any DTCs present?	Yes	Go to applicable DTC inspection. (See DTC TABLE [ABS HU/CM].)
		No	DTC troubleshooting completed.