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Home >> Nissan-Datsun >> 2019 >> Sentra SL >> Repair and Diagnosis >> Accessories & Equipment >> Anti-Theft Systems >> Security Control System (Without Intelligent Key System) >> Without Intelligent Key System >> DTC/Circuit Diagnosis >> IMMU-ECM >> DTC Diagnosis Procedure
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DTC Diagnosis Procedure

  1. PERFORM INITIALIZATION 

    Perform initialization with CONSULT. Re-register all mechanical keys.

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

    Can the system be initialized and can the engine be started with re-registered mechanical key?

    YES

    ID was unregistered.

    NO

    GO TO 2 .

  2. REPLACE BCM 
    1. Replace BCM. Refer to Removal and Installation .
    2. Perform initialization with CONSULT. Re-register all mechanical keys.

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

    Can the system be initialized and can the engine be started with re-registered mechanical key?

    YES

    BCM is malfunctioning.

    NO

    GO TO 3 .

  3. REPLACE ECM 
    1. Replace ECM. Refer to Removal and Installation .
    2. Perform initialization with CONSULT. Re-register all mechanical keys.

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

    Can the system be initialized and can the engine be started with re-registered mechanical key?

    YES

    ECM is malfunctioning.

    NO

    GO TO 4 .

  4. CHECK INTERMITTENT INCIDENT 

    Refer to Intermittent Incident .

    Inspection End.

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