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Home >> Infiniti >> 2015 >> Q50 Base, RWD >> Repair and Diagnosis >> Body & Frame >> Exterior Body Panels >> Door & Lock (Exc Hybrid) >> Symptom Diagnosis >> Door Does Not Lock/Unlock With Intelligent Key >> Diagnosis Procedure >> Diagnostic Test

Diagnostic Test

  1. CHECK INTELLIGENT KEY

    For Intelligent Key that cannot be used for door lock and unlock, check that the Intelligent Key belongs to the vehicle to be checked.

    Does the Intelligent Key belong to the vehicle to checked?

    YES 

    GO TO STEP 2  .

    NO 

    Check Intelligent Key button operation with registered Intelligent Key belonging to the vehicle.

  2. CHECK INTELLIGENT KEY LOW BATTERY WARNING

    Check that the Intelligent Key low battery warning is operated.

    Is the Intelligent Key low battery warning operated?

    YES 

    GO TO STEP 6  .

    NO-1 

    With another registered Intelligent Key: GO TO STEP 3  .

    NO-2 

    Without another registered Intelligent Key: GO TO STEP 4  .

  3. CHECK INTELLIGENT KEY BUTTON OPERATION

    Check that door lock and unlock can be performed by operating the buttons of another registered Intelligent Key.

    Can door lock and unlock be performed with another registered Intelligent Key?

    YES 

    GO TO STEP 4  .

    NO 

    GO TO STEP 7  .

  4. CHECK ENGINE START

    While depressing the brake pedal, contact the backside of the Intelligent Key that cannot be used to perform door lock and unlock operation to the push-button ignition switch. Operate the push-button ignition switch, and check that the vehicle is in START status.

    Is the vehicle in START status?

    YES 

    GO TO STEP 6  .

    NO 

    GO TO STEP 5  .

  5. CHECK INTELLIGENT KEY

    Check the inside of the Intelligent Key for rust or corrosion by water. Simultaneously check the internal circuits for damage.

    Is the vehicle in START status?

    YES 

    GO TO STEP 6  .

    NO 

    Replace Intelligent Key.

  6. CHECK INTELLIGENT KEY BATTERY

    Check the Intelligent Key battery.

    Refer to COMPONENT INSPECTION .

    Is the inspection result normal?

    YES 

    GO TO STEP 7  .

    NO 

    Replace Intelligent Key battery.

  7. CHECK POWER DOOR LOCK OPERATION

    Check door lock/unlock using door lock and unlock switch.

    Does door lock/unlock using door lock and unlock switch?

    YES 

    GO TO STEP 8  .

    NO 

    Refer to DIAGNOSIS PROCEDURE .

  8. CHECK REMOTE KEYLESS ENTRY RECEIVER

    Check remote keyless entry receiver.

    Refer to COMPONENT FUNCTION CHECK .

    Is the inspection result normal?

    YES 

    GO TO STEP 9  .

    NO 

    Repair or replace the malfunctioning parts.

  9. REPLACE INTELLIGENT KEY

    1. Replace Intelligent Key.
    2. Confirm the operation after replacement.

    Is the result normal?

    YES 

    INSPECTION END

    NO 

    Replace BCM. Refer to REMOVAL AND INSTALLATION .

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