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AV DIAGNOSIS SYSTEM (AV CONTROL UNIT) AV-79 < SYSTEM DESCRIPTION > [BOSE AUDIO WITHOUT NAVIGATION] C D E F G H I J K L M B A O P When either one of the following items ground circuits are malfunctioning. • serial communication circuits be- tween video distributor and rear dis- • serial communication signal between video distributor and rear display unit • Rear display unit power supply and ground circuits. • Serial communication circuits be- tween video distributor and rear dis- When either one of the following items tributor power supply and ground cir- • AV communication signal between AV control unit and video distributor Video distributor power supply and Malfunction is detected in AV communi- AV communication circuits between Diagnosis results Detection logic Possible malfunction location / Action to take JSNIA1084GB JSNIA1085GB JSNIA1086GB |