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Home >> Nissan-Datsun >> 2008 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 147 (Security Control System (With Intelligent Key System)) >> DTC/Circuit Diagnosis >> DTC B2193, P1612: Chain Of ECM-IMMU >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. 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 with CONSULT.

    For initialization, refer to "CONSULT Operation Manual".

    Does the engine start? 

    YES: BCM was malfunctioning.

    NO: ECM is malfunctioning.

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