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Home >> Infiniti >> 2024 >> QX55 Essential >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Collision/Avoidance >> Audio, Visual & Navigation System (DTC/Circuit Diagnosis) >> DTC/Circuit Diagnosis >> Multi Av (Av Control Unit) >> Power Supply And Ground Circuit >> BOSE Subwoofer Amp.
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BOSE Subwoofer Amp.

  1. CHECK FUSE 
    1. Check that the following fuse is not blown:
      Terminal No. Signal name Fuse No. Capacity
      8 Battery power supply 46 20A

    Is the fuse blown?

    YES>>

    Replace the blown fuse after repairing the affected circuit.

    NO>>

    GO TO 2.

  2. CHECK POWER SUPPLY CIRCUIT 
      1. Disconnect Bose subwoofer amp. connector.
      2. Check voltage between Bose subwoofer amp. connector and ground.
        Bose subwoofer amp. Ground Voltage(Approx.)
        Connector Terminal
        M306 8 - Battery voltage

    Is the inspection result normal?

    YES>>

    GO TO 3.

    NO>>

    Repair or replace harness or connectors.

  3. CHECK GROUND CIRCUIT 
      1. Ignition switch OFF.
      2. Check continuity between Bose subwoofer amp. connector and ground.
        Bose subwoofer amp. Ground Continuity
        Connector Terminal
        M306 16 Ground Yes

    Is the inspection result normal?

    YES>>

    Inspection End

    NO>>

    Repair or replace harness or connectors.