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NAVIGATION SYSTEM AV-81 C D E F G H I J L M A B AV Self-diagnosis codes Diagnosis No. Possible cause 1 AV and NAVI control unit malfunction 2 No map DVD-ROM is inserted in the AV and NAVI control unit. 3 Display power supply and ground circuit 4 Low tire pressure warning control unit power supply and ground circuit, AV communication line between low tire pres- 5 Audio unit power supply and ground circuit 6 CD auto changer power supply and ground circuit, AV communication line between CD auto changer and audio unit. 7 Audio amplifier power supply and ground circuit. 8 Rearview camera control unit power supply and ground circuit. 9 Voice activated control module power supply and ground circuit. 10 GPS antenna system 1. Visually check for a broken wire in the GPS antenna coaxial cable. 2. Disconnect the GPS antenna connector, and make sure that approximately 5V is supplied from the AV and NAVI control unit. If not, the AV and NAVI control unit is malfunctioning. If 5V is supplied, replace the GPS antenna. If the 11 AV communication line between voice activated control unit and the AV and NAVI control unit. 12 AV communication line between audio amplifier and audio unit. Audio amplifier internal communication circuit. 13 AV communication line between audio unit and multifunction switch. Audio control unit communication circuit. |