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Home >> Infiniti >> 2017 >> QX80 Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 120 (Security Control System (DTC/Circuit Diagnosis)) >> DTC/Circuit Diagnosis >> DTC P1612: Immobilizer Control Unit (IMMU) And ECM Inactive Communication >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2016 Infiniti QX80. 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.

    Can the system be initialized and can the engine be started with registered Intelligent Key?

    YES 

    INSPECTION END

    NO 

    GO TO STEP 2  .

  2. REPLACE ECM

    Replace ECM. Refer to REMOVAL AND INSTALLATION .

    INSPECTION END

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