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Home >> Nissan-Datsun >> 2016 >> Sentra FE+S >> Repair and Diagnosis >> External Pages >> Different car >> Section 21 (Security Control System (With Intelligent Key System) (DTCS)) >> DTC/Circuit Diagnosis >> DTC B2196: Dongle Unit >> Diagnosis Procedure
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Diagnosis Procedure

WARNING: This page is about a different car, the 2017 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.

Regarding Wiring Diagram information, refer to WIRING DIAGRAM .

  1. PERFORM INITIALIZATION

    1. Perform initialization of BCM and registration of all mechanical keys using CONSULT.

      For initialization and registration procedures, refer to CONSULT Immobilizer mode and follow the on-screen instructions.

    2. Start the engine.

    Does the engine start?

    YES 

    Inspection End.

    NO 

    GO TO STEP 2  .

  2. CHECK DONGLE UNIT CIRCUIT

    1. Turn ignition switch OFF.
    2. Disconnect BCM connector and dongle unit connector.
    3. Check continuity between BCM harness connector and dongle unit harness connector.
      BCM Dongle unit Continuity
      Connector Terminal Connector Terminal
      M84 24 M39 1 Yes
    4. Check continuity between BCM harness connector and ground.
      BCM Ground Continuity
      Connector Terminal
      M84 24 No

    Is the inspection result normal?

    YES 

    GO TO STEP 3  .

    NO 

    Repair or replace harness.

  3. CHECK DONGLE UNIT GROUND CIRCUIT

    Check continuity between dongle unit harness connector and ground.

    Dongle unit Ground Continuity
    Connector Terminal
    M39 4 Yes

    Is the inspection result normal?

    YES 

    Replace dongle unit.

    NO 

    Repair or replace harness.