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AV-160 < COMPONENT DIAGNOSIS > [BOSE AUDIO WITHOUT NAVIGATION] U1300 AV COMM CIRCUIT U1300 AV COMM CIRCUIT Description INFOID:0000000000964657 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-III DTC Detection Condition Possible causes U1300 • AV COMM CIRCUIT [U1300] • SWITCH CONN [U1240] • Mutifunction switch power supply and ground circuit malfunction is detected • A malfunction is detected in communication circuit be- tween AV control unit and multifunction switch • A malfunction is detected in communication signal be- tween AV control unit and multifunction switch • Multifunction switch power supply and ground circuits • Communication circuit between AV control unit and multifunction U1300 • AV COMM CIRCUIT [U1300] • HAND FREE CONN [U1256] • TEL adapter unit power supply and ground circuit mal- function is detected • Malfunction is detected in communication circuit be- tween TEL adapter unit and AV control unit • Malfunction is detected in communication signal be- tween TEL adapter unit and AV control unit • TEL adapter unit power supply and ground circuit • Communication circuit between TEL adapter unit and AV control U1300 • AV COMM CIRCUIT [U1300] • SWITCHE CONN [U1240] • HAND FREE CONN [U1256] Malfunction is detected in communication circuit between Communication circuit between AV |