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AV DISK EJECT SIGNAL CIRCUIT AV-233 < COMPONENT DIAGNOSIS > [BOSE AUDIO WITHOUT NAVIGATION] C D E F G H I J K L M B A O P DISK EJECT SIGNAL CIRCUIT Description INFOID:0000000003544781 The disk eject signal is output to AV control unit when the eject switch of multifunction switch is pressed. Diagnosis Procedure INFOID:0000000003544782 1. CHECK CONTINUITY DISK EJECT SIGNAL CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect multifunction switch connector and AV control unit connector. 3. Check continuity between multifunction switch harness connector and AV control unit harness connector. 4. Check continuity between multifunction switch harness connector and ground. Is the inspection result normal? YES >> GO TO 2. NO >> Repair harness or connector. 2. CHECK AV CONTROL UNIT VOLTAGE 1. Connect AV control unit connector. 2. Turn ignition switch ON. 3. Check voltage between AV control unit harness connector and ground. Is the inspection result normal? YES >> Replace preset switch. NO >> Replace AV control unit. Multifunction switch AV control unit Continuity Connector Terminal Connector Terminal M72 14 M85 103 Existed Multifunction switch Ground Continuity Connector Terminal M72 14 Not existed (+) ( − ) Reference value (Approx.) AV control unit Connector Terminal M85 103 Ground 3.3 V |