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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 2271 (Audio, Visual, Navigation System (BOSE Audio Without Navigation)) >> DTC/Circuit Diagnosis >> Power Supply And Ground Circuit >> Microphone >> MICROPHONE: Diagnosis Procedure

MICROPHONE: Diagnosis Procedure

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM - WITHOUT NAVIGATION SYSTEM ".

  1. CHECK POWER SUPPLY CIRCUIT (MICROPHONE SIDE)

    Check voltage between microphone harness connector and ground.

    (+) (-) Value (Approx.)
    Connector Terminal
    R8 4 Ground 5V
    Fig 1: Checking Voltage Between Microphone Connector R8 Terminal 4 And Ground
    G08169594Courtesy of NISSAN NORTH AMERICA, INC.

    Is proper voltage present? 

    YES: GO TO  4

    NO: GO TO 2

  2. CHECK POWER SUPPLY CIRCUIT (CONTINUITY)
    1. Turn ignition switch OFF.
    2. Disconnect Bluetooth control unit and microphone connectors.
    3. Check continuity between microphone harness connector R8 (A) terminal 4 and Bluetooth control unit harness connector B124 (B) terminal 29.
      A B Continuity
      Connector Terminal Connector Terminal
      R8 4 B124 29 Yes
    4. Check continuity between microphone harness connector R8 (A) terminal 4 and ground.
      A - Continuity
      Connector Terminal
      R8 4 Ground No
    Fig 2: Checking Continuity Between Microphone Connector R8 Terminal 4 And Bluetooth Control Unit Connector B124 Terminal 29
    G08169595Courtesy of NISSAN NORTH AMERICA, INC.

    Are continuity results as specified? 

    YES: GO TO 3

    NO: Repair harness or connector.

  3. CHECK POWER SUPPLY CIRCUIT (BLUETOOTH CONTROL UNIT SIDE)
    1. Connect Bluetooth control unit connector.
    2. Turn ignition switch ON.
    3. Check voltage between Bluetooth control unit harness connector and ground.
      (+) (-) Value (Approx.)
      Connector Terminal
      B124 29 Ground 5V
    Fig 3: Checking Voltage Between Bluetooth Control Unit Connector B124 Terminal 29 And Ground
    G08169596Courtesy of NISSAN NORTH AMERICA, INC.

    Is proper voltage present? 

    YES: Inspection End.

    NO: Replace Bluetooth control unit. Refer to "REMOVAL AND INSTALLATION ".

  4. CHECK GROUND CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect Bluetooth control unit and microphone connectors.
    3. Check continuity between microphone harness connector R8 terminal 2 and Bluetooth control unit harness connector B124 terminal 8.
      Connector Terminal Connector Terminal Continuity
      R8 2 B124 8 Yes
    Fig 4: Checking Continuity Between Microphone Connector R8 Terminal 2 And Bluetooth Control Unit Connector B124 Terminal 8
    G08169597Courtesy of NISSAN NORTH AMERICA, INC.

    Is continuity present? 

    YES: Inspection End.

    NO: Repair harness or connector.

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