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AV DIAGNOSIS SYSTEM (AV CONTROL UNIT) AV-83 < SYSTEM DESCRIPTION > [BOSE AUDIO WITHOUT NAVIGATION] C D E F G H I J K L M B A O P Error item Description Possible malfunction factor/Action to take CAN COMM CIRCUIT CAN communication malfunction is detect- Perform diagnosis with CONSULT-III, and CONTROL UNIT (CAN) CAN initial diagnosis malfunction is detect- Replace the AV control unit. CONTROL UNIT (AV) AV communication circuit initial diagnosis FLASH-ROM Error Of Control Unit AV control unit malfunction is detected. CAN Controller Memory Error Front Display Connection Error When either one of the following items are ground circuits are malfunctioning. • serial communication circuits between AV control unit and front display unit are • serial communication signal between AV control unit and front display unit is mal- • Front display unit power supply and ground circuits. • Serial communication circuits between AV control unit and front display unit. Rear Display Connection Error When either one of the following items are ground circuits are malfunctioning. • serial communication circuits between video distributor and rear display unit are • serial communication signal between video distributor and rear display unit is • Rear display unit power supply and ground circuits. • Serial communication circuits between video distributor and rear display unit. Camera Control Unit Connection Error Malfunction is detected in camera connec- Camera-connection recognition circuit be- SAT Connection Error When either one of the following items are ground circuits are malfunctioning. • serial communication circuits between AV control unit and satellite radio tuner • serial communication or request signal between AV control unit and satellite ra- • request signal circuit between AV control unit and satellite radio tuner is malfunc- • Satellite radio tuner power supply and ground circuits. • Serial communication circuits between AV control unit and satellite radio tuner. • Request signal circuit between AV con- trol unit and satellite radio tuner. • AV COMM CIRCUIT When either one of the following items are ground circuits are malfunctioning. • AV communication circuits between AV control unit and multifunction switch are • AV communication signal between AV control unit and multifunction switch is • Multifunction switch power supply and ground circuits. • AV communication circuits between AV control unit and multifunction switch. |