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Home >> Infiniti >> 2017 >> Q50 Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 583 (Security Control System (DTCS)) >> BCM (BCM) >> DTC B2603: Shift Position >> Confirmation Procedure >> Gasoline engine models

Gasoline engine models

WARNING: This page is about a different car, the 2020 Infiniti Q50. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK DTC PRIORITY 

    If DTC B2603 is displayed with DTC B2601, first perform the trouble diagnosis for DTC B2601.

    Is applicable DTC detected?

    YES

    Perform diagnosis of applicable. Refer to DTC Description .

    NO

    GO TO 2.

  2. PERFORM DTC CONFIRMATION PROCEDURE 1 
    1. Shift the selector lever to the P position.
    2. Turn ignition switch ON and wait 1 second or more.
    3. Check DTC in "Self Diagnostic Result" mode of "BCM" using CONSULT.

    Is DTC detected?

    YES

    Refer to DTC Diagnosis Procedure .

    NO

    GO TO 3.

  3. PERFORM DTC CONFIRMATION PROCEDURE 2 
    1. Shift the selector lever to the position other than P and N, and wait 1 second or more.
    2. Check DTC in "Self Diagnostic Result" mode of "BCM" using CONSULT.

    Is DTC detected?

    YES

    Refer to DTC Diagnosis Procedure .

    NO

    To check malfunction symptom before repair: Refer to Inspection .

    NO

    Confirmation after repair: INSPECTION END

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