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AV-242 < DTC/CIRCUIT DIAGNOSIS > [BOSE AUDIO WITHOUT NAVIGATION] U1300 AV COMM CIRCUIT U1300 AV COMM CIRCUIT Description INFOID:0000000009721749 U1300 is indicated when malfunction occurs in communication signal of multi AV system. Indicated simulta- SELF-DIAGNOSIS RESULTS DISPLAY ITEM DTC Display contents of CONSULT DTC detection condition Possible malfunction factor U1300 • AV COMM CIRCUIT [U1300] • SWITCH CONN [U1240] When either one of the following items are detected: are malfunctioning. • AV communication circuits between AV control unit and multifunction switch are malfunctioning. • Multifunction switch power supply and ground circuits. • AV communication circuits between AV control unit and multifunction U1300 • AV COMM CIRCUIT [U1300] • HAND FREE CONN [U1256] When either one of the following items are detected: malfunctioning. • AV communication circuits between AV control unit and TEL adapter unit are malfunctioning. • TEL adapter unit power supply and ground circuits. • AV communication circuits between AV control unit and TEL adapter unit. U1300 • AV COMM CIRCUIT [U1300] • SWITCH CONN [U1240] • HAND FREE CONN [U1256] AV communication circuits between AV control unit and AV communication circuits between AV |