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AV COMPOSITE IMAGE SIGNAL CIRCUIT AV-55 < DTC/CIRCUIT DIAGNOSIS > [BASE AUDIO WITH NAVIGATION] C D E F G H I J K L M B A O P COMPOSITE IMAGE SIGNAL CIRCUIT Description INFOID:0000000009163275 AV control unit transmits the playback DVD image signal to the display unit. Diagnosis Procedure INFOID:0000000009163276 1. CHECK CONTINUITY COMPOSITE IMAGE SIGNAL CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect AV control unit connector and display unit connector. 3. Check continuity between AV control unit harness connector and display unit harness connector. 4. Check continuity between AV control unit harness connector and ground. Is the inspection result normal? YES >> GO TO 2. NO >> Repair harness or connector. 2. CHECK COMPOSITE IMAGE SIGNAL 1. Connect AV control unit connector and display unit connector. 2. Turn ignition switch ON. 3. Check signal between AV control unit harness connector and ground. Is the inspection result normal? YES >> Replace display unit. NO >> Replace AV control unit. AV control unit Display unit Continuity Connector Terminal Connector Terminal M203 68 M93 18 Existed AV control unit Ground Continuity Connector Terminal M203 68 Not existed (+) ( − ) Condition Reference value AV control unit Connector Terminal M203 68 Ground At DVD image is displayed. SKIB2251J |