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AV CAMERA IMAGE SIGNAL CIRCUIT AV-251 < COMPONENT DIAGNOSIS > [BOSE AUDIO WITHOUT NAVIGATION] C D E F G H I J K L M B A O P CAMERA IMAGE SIGNAL CIRCUIT Description INFOID:0000000003765723 • Camera control unit outputs camera ON signal to rear view camera and inputs rear view camera image sig- nal from rear view camera when the reverse signal is input. • The camera control unit that inputs the camera image signal transmits the camera image signal to the AV control unit. Diagnosis Procedure INFOID:0000000003901195 1. CHECK CONTINUITY CAMERA IMAGE SIGNAL CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect camera control unit connector and AV control unit connector. 3. Check continuity between camera control unit harness connector and AV control unit harness connector. 4. Check continuity between camera control unit harness connector and ground. Is inspection result normal? YES >> GO TO 2. NO >> Repair harness or connector. 2. CHECK CAMERA IMAGE SIGNAL 1. Connect camera control unit connector and AV control unit connector. 2. Turn ignition switch ON. 3. Check signal between camera control unit harness connector using an oscilloscope. Is inspection result normal? YES >> Replace AV control unit. NO >> Replace camera control unit. Camera control unit AV control unit Continuity Connector Terminals Connector Terminals B251 11 M130 64 Existed 12 65 Camera control unit Ground Continuity Connector Terminal B251 12 Not existed (+) ( − ) Condition Reference value Camera control unit Connector Terminal B251 12 Ground When rear view camera SKIB2251J |