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AV POWER SUPPLY AND GROUND CIRCUIT AV-631 < DTC/CIRCUIT DIAGNOSIS > [BOSE AUDIO WITH NAVIGATION] C D E F G H I J K L M B A O P POWER SUPPLY AND GROUND CIRCUIT AV CONTROL UNIT AV CONTROL UNIT : Diagnosis Procedure INFOID:0000000005528757 1. CHECK FUSE Check for blown fuses. Is the inspection result normal? YES >> GO TO 2. NO >> Be sure to eliminate the cause of malfunction before installing new fuse. 2. CHECK POWER SUPPLY CIRCUIT Check voltage between AV control unit harness connectors and ground. Is the inspection result normal? YES >> GO TO 3. NO >> Check harness between AV control unit and fuse. 3. CHECK GROUND CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect AV control unit connectors. 3. Check continuity between AV control unit harness connectors and ground. Is the inspection result normal? YES >> INSPECTION END NO >> Repair harness or connector. FRONT DISPLAY UNIT FRONT DISPLAY UNIT : Diagnosis Procedure INFOID:0000000005528758 1. CHECK FUSE Check for blown fuses. Power source Fuse No. Battery 35 Ignition switch ACC or ON 19 Ignition switch ON or START 3 Signal name Connector No. Terminal No. Ignition switch position Value (Approx.) Battery power supply M144 19 OFF Battery voltage M145 22 24 ACC power supply M144 7 ACC Battery voltage M145 25 Ignition signal M145 35 ON Battery voltage Signal name Connector No. Terminal No. Ignition switch position Continuity Ground M145 21 OFF Existed 23 Power source Fuse No. Battery 35 Ignition switch ACC or ON 19 |