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Home >> Infiniti >> 2012 >> M37 Base >> Repair and Diagnosis >> Accessories & Equipment >> Anti-Theft Systems >> Security Control System (With Intelligent Key System) >> DTC/Circuit Diagnosis >> DTC B2193: Chain Of ECM-IMMU >> Diagnosis Procedure
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Diagnosis Procedure

  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 2.

  2. REPLACE ECM 
    1. Replace ECM. Refer to "REMOVAL AND INSTALLATION " (VQ37VHR), "REMOVAL AND INSTALLATION " (VK56VD).
    2. Perform "ADDITIONAL SERVICE WHEN REPLACING ECM". Refer to "WORK PROCEDURE " (VQ37VHR), "WORK PROCEDURE " (VK56VD).

      : INSPECTION END

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