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AV DIAGNOSIS SYSTEM (AV CONTROL UNIT) AV-493 < FUNCTION DIAGNOSIS > [BOSE AUDIO WITH NAVIGATION] C D E F G H I J K L M B A O P Front Display Connection Error When either one of the following items • Display unit power supply or ground cir- cuits malfunction are detected. • Malfunction is detected in the communi- cation circuits between AV control unit • Display unit power supply and ground circuits. • Communication circuits between AV con- trol unit and display unit. GPS Antenna Error GPS antenna connection malfunction is de- GPS antenna. Camera Control Unit Connection Error Malfunction is detected in the camera con- Camera-connection recognition circuit be- XM Antenna Connection Error Poor connection is detected in satellite ra- • Satellite radio antenna feeder. • AV COMM CIRCUIT When either one of the following items • AV control unit power supply or ground circuits malfunction are detected. • AV control unit malfunction is detected. • AV control unit power supply and ground circuits. • When there is no malfunction, AV control unit is malfunctioning. • AV COMM CIRCUIT WITHOUT REAR VIEW MONITOR AND When either one of the following items • Multifunction switch power supply or ground circuits malfunction are detected. • Malfunction is detected in the AV com- munication circuits between multifunc- • Multifunction switch power supply and ground circuits. • AV communication circuits between mul- tifunction switch and the junction be- WITH REAR VIEW MONITOR When either one of the following items • Multifunction switch power supply or ground circuits malfunction are detected. • Malfunction is detected in the AV com- munication circuits between multifunc- • Multifunction switch power supply and ground circuits. • AV communication circuits between mul- tifunction switch and the junction be- WITH AROUND VIEW MONITOR When either one of the following items • Multifunction switch power supply or ground circuits malfunction are detected. • Malfunction is detected in the AV com- munication circuits between multifunc- • Multifunction switch power supply and ground circuits. • AV communication circuits between mul- tifunction switch and the junction be- • AV COMM CIRCUIT Camera control unit power supply or Camera control unit power supply and Error item Detection logic Possible malfunction factor/Action to take |