DTC Detection Logic

NOTE: If DTC U1024 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer to "DTC LOGIC ".

DTC DETECTION CONDITION CHART

DTC No.	Trouble diagnosis name	DTC detecting condition	Possible cause
U1024	VVEL CAN communication	When VVEL control module cannot transmit/receive can communication signal from ECM. When detecting error during the initial diagnosis of CAN controller of VVEL control module.	Harness or connectors (CAN communication line is open or shorted) ECM VVEL control module