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Home >> Infiniti >> 2018 >> Q70 5.6 Luxe, RWD >> Repair and Diagnosis >> Accessories & Equipment >> Warning Systems >> Wheels & Tires System (Except Hybrid) >> Basic Inspection >> Diagnosis And Repair Work Flow >> Work Flow >> Detailed Flow

Detailed Flow

  1. COLLECT THE INFORMATION FROM THE CUSTOMER 

    Clarify customer complaints before inspection. To do so, reproduce the symptom before hand and fully understand it. Then interview the customer thoroughly. Check the symptoms by driving vehicle with the customer, if necessary.

    CAUTION: Customers are not professionals. Never assume "maybe the customer means..." or "maybe the customer mentioned this symptom.

    GO TO 2.

  2. BASIC INSPECTION 
    1. Turn the ignition switch ON.
      CAUTION: Never start the engine.
    2. Check the tire pressure for all wheels and adjust to the specified value. Refer to Tire Air Pressure .

    Is the inspection result normal?

    YES

    GO TO 3.

    NO

    Inspect or repair the tires or wheels.

  3. CHECK LOW TIRE PRESSURE WARNING LAMP STATUS 

    Check low tire pressure warning lamp display.

    Does not low tire pressure warning lamp turn OFF?

    YES

    GO TO 4.

    NO

    GO TO 8.

  4. CHECK DTC WITH LOW TIRE PRESSURE WARNING CONTROL UNIT 

    SYMBOL With CONSULT

    Perform the self-diagnosis.

    Is any DTC detected?

    YES

    Record or print DTC and freeze frame data (FFD). GO TO 5.

    NO

    GO TO 8.

  5. ERASE DTC MEMORY 

    SYMBOL With CONSULT

    1. Record DTC.
    2. Erase DTC once.
    NOTE: After erasing DTC record, currently occurred DTC can be detected by reading out DTC again.

    GO TO 6.

  6. PERFORM DTC CONFIRMATION PROCEDURE 

    SYMBOL With CONSULT

    Perform "DTC CONFIRMATION PROCEDURE" (self-diagnosis) with recorded DTC.

    If two or more DTCs are detected, refer to DTC Inspection Priority Chart  and determine trouble diagnosis order.

    Is any malfunction detected by self-diagnosis?

    YES

    GO TO 7.

    NO

    GO TO 8.

  7. DETECT MALFUNCTIONING PART BY DIAGNOSIS PROCEDURE 

    Perform the diagnosis applicable to the displayed DTC. Refer to DTC Index .

    GO TO 10.

  8. CRUISE FOR SYMPTOM CHECK 
    1. Start the engine.
    2. Drive for several minutes at a speed of 40 km/h (25 MPH) or more, then stop the vehicle.

    GO TO 9.

  9. PERFORM DIAGNOSIS BY SYMPTOM 

    Perform trouble diagnosis or repair applicable to the symptom. Refer to Symptom Table .

    GO TO 11.

  10. FINAL CHECK (WHEN DTC WAS DETECTED) 

    SYMBOL With CONSULT

    Perform "DTC CONFIRMATION PROCEDURE" (self-diagnosis) with applicable DTC.

    Is any malfunction detected by self-diagnosis?

    YES

    GO TO 7.

    NO

    INSPECTION END

  11. FINAL CHECK (WHEN SYMPTOM OCCURRED) 

    Make sure that the symptom is not detected.

    Does symptom remain?

    YES

    GO TO 9.

    NO

    INSPECTION END

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