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AV POWER SUPPLY AND GROUND CIRCUIT AV-339 < DTC/CIRCUIT DIAGNOSIS > [BOSE AUDIO WITH NAVIGATION] C D E F G H I J K L M B A O P Is voltage reading approximately 12 volts? YES >> GO TO 4. NO >> GO TO 2. 2. CHECK POWER SUPPLY CIRCUIT (CONTINUITY) 1. Turn ignition switch OFF. 2. Disconnect rear view camera and AV control unit connectors. 3. Check continuity between rear view camera harness connector D551 terminal 2 and AV control unit har- ness connector M48 terminal 84. 4. Check continuity between rear view camera harness connector D551 terminal 2 and ground. Are continuity test results as specified? YES >> GO TO 3. NO >> Repair harness or connector. 3. CHECK REVERSE POSITION INPUT SIGNAL 1. Turn ignition switch ON. 2. Shift transmission into reverse. 3. Check voltage between AV control unit harness connector M48 terminal 84 and ground. Is voltage reading approximately 12 volts? YES >> Replace AV control unit. Refer to AV-420, "Removal and Installation" . NO >> Check harness for open or short between AV control unit and back-up lamp relay. 4. CHECK GROUND CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect rear view camera harness connector. 3. Check continuity between rear view camera harness connector D551 terminal 1 and ground. Does continuity exist? YES >> Inspection End. NO >> Repair harness or connector. DVD PLAYER INFOID:0000000006246753 Regarding Wiring Diagram information, refer to AV-385, "Wiring Diagram - With Navigation System" (+) (-) Transmission position Value (Approx.) Connector Terminal D551 2 Ground Reverse 12V Connector Terminal Connector Terminal Continuity D551 2 M48 84 Yes Connector Terminal — Continuity D551 2 Ground No (+) (-) Transmission position Value (Approx.) Connector Terminal M48 84 Ground Reverse 12V Connector Terminal — Continuity D551 1 Ground Yes 2011 Pathfinder |