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Home >> Nissan-Datsun >> 2013 >> Sentra S, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 21 (Security Control System (With Intelligent Key System) (DTCS)) >> DTC/Circuit Diagnosis >> DTC B2193: Chain Of ECM-IMMU >> 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.

  1. REPLACE BCM

    1. Replace BCM. Refer to REMOVAL AND INSTALLATION .
    2. Perform initialization of BCM and registration of all Intelligent Keys using CONSULT.

    Does the engine start?

    YES 

    Inspection End.

    NO 

    GO TO STEP 2  .

  2. REPLACE ECM

    1. Replace ECM.

      Refer to REMOVAL AND INSTALLATION (MRA8DE) or REMOVAL AND INSTALLATION (MR16DDT).

    2. Perform "ADDITIONAL SERVICE WHEN REPLACING ECM".

      Refer to WORK PROCEDURE (MRA8DE) or WORK PROCEDURE (MR16DDT).

    Inspection End.

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