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AV POWER SUPPLY AND GROUND CIRCUIT AV-83 < COMPONENT DIAGNOSIS > [BASE AUDIO AND DISPLAY SYSTEM] C D E F G H I J K L M B A O P 2. CHECK GROUND CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect the harness connector between display unit and AV control unit. 3. Check continuity between display unit harness connector and AV control unit harness connector. 4. Check continuity between display unit harness connector and ground. Is inspection result normal? YES >> GO TO 3. NO >> Repair harness or connector. 3. CHECK POWER SUPPLY CIRCUIT (AV CONTROL UNIT SIDE) 1. Connect the AV control unit harness connector. 2. Turn ignition switch ACC. 3. Check voltage between AV control unit harness connector and ground. Is inspection result normal? YES >> INSPECTED END. NO >> Replace AV control unit. 4. CHECK GROUND CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect display unit connector. 3. Check continuity between display unit harness connector and ground. Is inspection result normal? YES >> INSPECTED END. NO >> Repair harness or connector. MULTIFUNCTION SWITCH MULTIFUNCTION SWITCH : Diagnosis Procedure INFOID:0000000003901204 1. CHECK FUSE Check for blown fuses. Is inspection result normal? Signal name Display unit AV control unit Continuity Connector No. Terminal No. Connector No. Terminal No. Ground M49 2 M129 59 Existed 3 47 Signal name Display unit Ground Continuity Connector No. Terminal No. Inverter VCC M49 2 Not existed Signal VCC 3 Signal name Connector No. Terminal No. Ignition switch position Voltage (Approx.) Inverter VCC M129 59 ACC 9 V Signal VCC 47 Signal name Display unit Ground Continuity Connector No. Terminal No. Ground M49 1 Existed Power source Fuse No. Ignition switch ACC or ON 19 |