DTC Logic

WARNING: This page is about a different car, the 2011 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.

DTC DETECTION LOGIC

DTC	Display contents of CONSULT-III	DTC Detection Condition	Possible causes
U1243	FRONT DISP CONN [U1243]	When either one of the following items is detected. front display unit power supply and ground circuits are malfunctioning. serial communication circuits between front display unit and AV control unit are malfunctioning.	Front display unit power supply and ground circuits. Serial communication circuits between front display unit and AV control unit.