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AV COMPOSITE IMAGE SIGNAL CIRCUIT (VIDEO DISTRIBUTOR TO REAR DIS- PLAY UNIT) AV-521 < DTC/CIRCUIT DIAGNOSIS > [NAVIGATION (TWIN MONITOR)] C D E F G H I J K L M B A O P COMPOSITE IMAGE SIGNAL CIRCUIT (VIDEO DISTRIBUTOR TO REAR Description INFOID:0000000005550410 • DVD is played by inserting DVD into the AV control unit. mits it to the video distributor. • Video distributor receives the image signal from the AV control unit and then transmits it to the rear display unit. Diagnosis Procedure INFOID:0000000005247327 1. CHECK CONTINUITY COMPOSITE IMAGE SIGNAL CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect video distributor connector and rear display unit connector. 3. Check continuity between video distributor harness connector and rear display unit harness connector. 4. Check continuity between rear display 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 video distributor connector and rear display unit connector. 2. Turn ignition switch ON. 3. Check signal between rear display unit harness connector using an oscilloscope. Is the inspection result normal? YES >> Replace rear display unit. NO >> Replace video distributor. Video distributor Rear display unit Continuity Connector Terminal Connector Terminal M97 34 B26 14 Existed Rear display unit Ground Continuity Connector Terminal B26 14 Not existed (+) ( − ) Condition Reference value Rear display unit Connector Terminal B26 14 Ground When AUX or DVD image is dis- SKIB2251J |