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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 >> DTC B2193: Chain Of ECM-IMMU >> DTC Diagnosis Procedure
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DTC Diagnosis Procedure

  1. REPLACE BCM 
    1. Replace BCM. Refer to Removal and Installation .
    2. Perform initialization with CONSULT.

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

    Does the engine start?

    YES

    Inspection End.

    NO

    ECM is malfunctioning.

    • Replace ECM.
    • Perform ECM re-communicating function.