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AV RGB SYNCHRONIZING SIGNAL CIRCUIT AV-639 < DTC/CIRCUIT DIAGNOSIS > [BOSE AUDIO WITH NAVIGATION] C D E F G H I J K L M B A O P RGB SYNCHRONIZING SIGNAL CIRCUIT Description INFOID:0000000005528770 Transmit the RGB synchronizing signal to the front display unit so as to synchronize the RGB image displayed Diagnosis Procedure INFOID:0000000005528771 1. CHECK CONTINUITY RGB SYNCHRONIZING SIGNAL CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect front display unit connector and AV control unit connector. 3. Check continuity between front display unit harness connector and AV control unit harness connector. 4. Check continuity between front display unit harness connector and ground. Is the inspection result normal? YES >> GO TO 2. NO >> Repair harness or connector. 2. CHECK RGB SYNCHRONIZING SIGNAL 1. Connect front display unit connector and AV control unit connector. 2. Turn ignition switch ON. 3. Check signal between front display unit harness connector and ground using an oscilloscope. Is the inspection result normal? YES >> Replace front display unit. NO >> Replace AV control unit. Front display unit AV control unit Continuity Connector Terminal Connector Terminal M49 19 M146 65 Existed Front display unit Ground Continuity Connector Terminal M49 19 Not existed (+) ( − ) Condition Signal Front display unit Connector Terminal M49 19 Ground — JPNIA0461GB |