DTC U1300: Av Comm Circuit: Description

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

U1300 is indicated when malfunction occurs in communication signal of multi AV system. Indicated simultaneously, without fail, with the malfunction of control units connected to AV control unit with communication line. Determine the possible malfunction cause from the table below.

Self-diagnosis results display item

DTC	Display contents of CONSULT	DTC Detection Condition	Possible causes
U1300 U1240	AV COMM CIRCUIT [U1300] SWITCH CONN [U1240]	A/C and AV switch assembly power supply and ground circuit malfunction is detected A malfunction is detected in communication circuit between AV control unit and A/C and AV switch assembly A malfunction is detected in communication signal between AV control unit and A/C and AV switch assembly	A/C and AV switch assembly power supply and ground circuits Communication circuit between AV control unit and A/C and AV switch assembly