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NAVIGATION SYSTEM AV-105 C D E F G H I J L M A B AV Self-diagnosis Codes Diagnosis No. Possible cause Action to take 1 AV and NAVI control unit malfunction is detected Replace AV and NAVI control unit 2 DVD-ROM not inserted is detected Insert DVD-ROM 3 ● Malfunction is detected on DVD-ROM drive pickup lens ● There is dirt and damage on the DVD-ROM 1. Check if the inserted DVD-ROM is specified for this nav- igation system, and the DVD-ROM is dirty, scratched or 2. If the results from the above checkup show no malfunc- tion, insert the same DVD-ROM, and then restart self- 3. If self-diagnosis results still show any malfunction, replace AV and NAVI control unit. 4 GPS antenna connection malfunction is detected 1. Check if GPS antenna feeder line is snapped or pinched. 2. If the results from the above checkup show no malfunc- tion, replace GPS antenna, and then restart self-diagno- 3. If self-diagnosis results still show any malfunction, replace AV and NAVI control unit. 5 Malfunction is detected on communication signal between 1. Check communication circuit between multifunction switch and audio unit. 2. If the results from the above checkup show no malfunc- tion, replace either multifunction switch or audio unit, 3. If self-diagnosis results still show any malfunction, replace the other unit. 6 ● Low tire pressure warning control unit power supply and ● Malfunction is detected on communication signal 1. Check low tire pressure warning control unit power sup- ply and ground circuit. 2. Check communication circuit between multifunction switch and low tire pressure warning control unit. 3. If the results from the above checkup show no malfunc- tion, replace either multifunction switch or low tire pres- 4. If self-diagnosis results still show any malfunction, replace the other unit. 7 ● BOSE speaker amp. power supply and ground circuit ● Malfunction is detected on communication signal 1. Check BOSE speaker amp. power supply and ground circuit. 2. Check communication circuit between audio unit and BOSE speaker amp. 3. If the results from the above checkup show no malfunc- tion, replace either audio unit or BOSE speaker amp., 4. If self-diagnosis results still show any malfunction, replace the other unit. 8 Audio unit power supply and ground circuit malfunction is 1. Check audio unit power supply circuit. 2. If the results from the above checkup show no malfunc- tion, replace audio unit. |