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Home >> Toyota >> 2003 >> Highlander Base, 2.4 D, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 857 (Security Control System (Without Intelligent Key System)) >> DTC/Circuit Diagnosis >> DTC B2191: Difference Of Key >> Diagnosis Procedure
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Diagnosis Procedure

WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.
  1. PERFORM INITIALIZATION 

    Perform initialization with CONSULT. Re-register all mechanical keys.

    For initialization and registration of mechanical key. Refer to CONSULT Immobilizer mode and follow the onscreen instructions.

    Can the system be initialized and can the engine be started with re-registered mechanical key? 

    YES: Mechanical key was unregistered.

    NO: BCM is malfunctioning.