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AV STEERING SWITCH SIGNAL B CIRCUIT AV-573 < COMPONENT DIAGNOSIS > [BOSE AUDIO WITH NAVIGATION] C D E F G H I J K L M B A O P STEERING SWITCH SIGNAL B CIRCUIT Description INFOID:0000000003513833 Transmits the steering switch signal to AV control unit. Diagnosis Procedure INFOID:0000000003160735 1. CHECK STEERING SWITCH SIGNAL B CIRCUIT 1. Disconnect AV control unit connector and spiral cable connector. 2. Check continuity between AV control unit harness connector and spiral cable harness connector. 3. Check continuity between AV control unit harness connector and ground. Is inspection result normal? YES >> GO TO 2. NO >> Repair harness or connector. 2. CHECK SPIRAL CABLE Check spiral cable. YES >> GO TO 3. NO >> Replace spiral cable. 3. CHECK AV CONTROL UNIT VOLTAGE 1. Connect AV control unit connector and spiral cable connector. 2. Turn ignition switch ON. 3. Check voltage between AV control unit harness connector. Is inspection result normal? YES >> GO TO 4. NO >> Replace AV control unit. 4. CHECK STEERING SWITCH 1. Turn ignition switch OFF. 2. Check steering switch. Refer to AV-574, "Component Inspection" Is inspection result normal? YES >> INSPECTION END NO >> Replace steering switch. AV control unit Spiral cable Continuity Connector Terminal Connector Terminal M80 16 M36 31 Existed AV control unit Ground Continuity Connector Terminal M80 16 Not existed (+) ( − ) Voltage (Approx.) AV control unit AV control unit Connector Terminal Connector Terminal M80 16 M80 15 5.0 V |