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Home >> Infiniti >> 2018 >> Q70 5.6 Luxe, RWD >> Repair and Diagnosis >> Body & Frame >> Exterior Body Panels >> Door Lock (Except Hybrid) >> Symptom Diagnosis >> Door Does Not Lock/Unlock And Engine Does Not Start (All I-Key/Req SW/Push SW) >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK INTELLIGENT KEY SYSTEM SYMPTOM TABLE 

    Check Intelligent Key system symptom table.

    Refer to Diagnosis Procedure .

    GO TO 2.

  2. PERFORM SELF-DIAGNOSIS RESULT 

    Select "Self Diagnostic Result" mode of "BCM", and check if DTC "B26FF" is detected.

    Is DTC "B26FF" detected?

    YES

    Perform the trouble diagnosis for detected DTC.

    NO

    GO TO 3.

  3. CHECK INTELLIGENT KEY BATTERY 

    Check Intelligent Key battery.

    Refer to Component Inspection .

    Is the inspection result normal?

    YES

    GO TO 4.

    NO

    Repair or replace the malfunctioning parts.

  4. CHECK REMOTE KEYLESS ENTRY RECEIVER 

    Check remote keyless entry receiver.

    Refer to Component Function Check .

    Is the inspection result normal?

    YES

    GO TO 5.

    NO

    Repair or replace the malfunctioning parts.

  5. REPLACE BCM 
    1. Replace BCM. Refer to Removal and Installation .
    2. Check operation after replacement.

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    Check intermittent incident. Refer to Intermittent Incident .

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