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Home >> Infiniti >> 2017 >> Q60 Base, AWD >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Security Control System (DTC/Circuit Diagnosis) >> DTC / Circuit Diagnosis >> DTC B219B: Security Code >> Diagnosis Procedure
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Diagnosis Procedure

  1. INTELLIGENT KEY REGISTRATION

    Using CONSULT, register all Intelligent Keys again.

    Can engine be started with the registered Intelligent Key?

    YES 

    INSPECTION END

    NO 

    GO TO STEP 2  .

  2. CHECK SELF DIAGNOSTIC RESULT

    1. Select "Self Diagnostic Result" mode of "BCM" using CONSULT.
    2. Erase DTC.
    3. Perform DTC CONFIRMATION PROCEDURE for DTC B219B. Refer to DTC DESCRIPTION .

    Is DTC detected?

    YES 

    GO TO STEP 3  .

    NO 

    INSPECTION END

  3. CHECK COMMUNICATION BETWEEN BCM AND INTELLIGENT KEY

    Turn the ignition switch ON for checking communication between BCM and Intelligent Key.

    Can the ignition switch be turned ON?

    YES 

    GO TO STEP 4  .

    NO 

    GO TO STEP 5. 

  4. REPLACE TCU

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

    INSPECTION END

  5. REPLACE BCM

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

    INSPECTION END

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