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AV HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT AV-229 < COMPONENT DIAGNOSIS > [BOSE AUDIO WITHOUT NAVIGATION] C D E F G H I J K L M B A O P HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT Description INFOID:0000000003544775 In composite image (AUX image, camera image), transmit the vertical synchronizing (VP) signal and horizon- Diagnosis Procedure INFOID:0000000003544776 1. CHECK CONTINUITY HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect display unit connector and AV control unit connector. 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 the inspection result normal? YES >> GO TO 2. NO >> Repair harness or connector. 2. CHECK HORIZONTAL SYNCHRONIZING (HP) SIGNAL 1. Connect display unit connector and AV control unit connector. 2. Turn ignition switch ON. 3. Check signal between display unit harness connector and ground. Is the inspection result normal? YES >> Replace AV control unit. NO >> Replace display unit. Display unit AV control unit Continuity Connector Terminal Connector Terminal M71 8 M83 45 Existed Display unit Ground Continuity Connector Terminal M71 8 Not existed (+) ( − ) Reference value Display unit Connector Terminal M71 8 Ground SKIB3601E |