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AV-212 < COMPONENT DIAGNOSIS > [BOSE AUDIO WITH NAVIGATION] POWER SUPPLY AND GROUND CIRCUIT 3. Check voltage between AV control unit harness connector and ground. Is voltage approximately 5 volts? YES >> Inspection End. NO >> Replace AV control unit. Refer to 4. CHECK GROUND CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect microphone harness connector R7 and AV control unit harness connector M46. 3. Check continuity between microphone harness connector R7 (A) terminal 2 and AV control unit harness connector M46 (B) terminal 47. Does continuity exist? YES >> Inspection End. NO >> Repair harness or connector. Signal name Connector No. Terminal No. Ignition switch position Value (Approx.) Microphone VCC signal M46 46 ACC 5V ALLIA0251ZZ Signal name Continuity Ground Continuity should exist. ALLIA0252ZZ |