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Home >> Nissan-Datsun >> 2021 >> Altima SL, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 190 (Transfer Case) >> Basic Inspection >> AWD System >> Diagnosis And Repair Workflow >> Work Flow >> Detailed Flow

Detailed Flow

WARNING: This page is about a different car, the 2020 Nissan Altima. However, it is still accessible from the selected car via links, so may be relevant.
  1. INTERVIEW FROM THE CUSTOMER 

    Clarify customer complaints before inspection. First of all, perform an interview utilizing the Diagnostic Worksheet (refer to Diagnostic Work Sheet ), and reproduce symptoms as well as fully understand it. Ask customer about his/her complaints carefully. Check symptoms by driving vehicle with customer, if necessary.

    CAUTION: Customers are not professionals. Never guess easily like "maybe the customer means that...," or "maybe the customer mentions this symptom".

    GO TO 2.

  2. CHECK SYMPTOM 

    Reproduce the symptom that is indicated by the customer, based on the information from the customer obtained by interview. Also check that the symptom is not caused by protection function. Refer to Protection Function .

    CAUTION: When the symptom is caused by normal operation, fully inspect each portion and obtain the understanding of customer that the symptom is not caused by a malfunction.

    GO TO 3.

  3. PERFORM SELF-DIAGNOSIS 

    SYMBOL CONSULT

    Select "Self Diagnostic Result" mode of "ALL MODE AWD/4WD".

    Is any DTC detected?

    YES

    Record or print self-diagnosis results. GO TO 4.

    NO

    GO TO 6.

  4. RECHECK SYMPTOM 

    SYMBOL CONSULT

    1. Erase "Self Diagnostic Result" mode of "ALL MODE AWD/4WD".
    2. Perform DTC confirmation procedures for the malfunctioning system.
    NOTE: If multiple DTCs are detected at the same time, determine the order for performing the diagnosis based on DTC Inspection Priority Chart .

    Is any DTC detected?

    YES

    GO TO 5.

    NO

    Check harness and connectors based on the information obtained by interview. Refer to Inspection .

  5. REPAIR OR REPLACE MALFUNCTIONING PARTS 
    • Repair or replace malfunctioning parts.
    • Reconnect part or connector after repairing or replacing.
    • When DTC is detected, erase "Self Diagnostic Result" mode of "ALL MODE AWD/4WD".

    GO TO 7.

  6. IDENTIFY MALFUNCTIONING SYSTEM BY SYMPTOM DIAGNOSIS 

    Estimate malfunctioning system based on symptom diagnosis and perform inspection.

    Can the malfunctioning system be identified?

    YES

    GO TO 7.

    NO

    Check harness and connectors based on the information obtained by interview. Refer to Inspection .

  7. FINAL CHECK 

    SYMBOL CONSULT

    1. Check the reference value for AWD control unit.
    2. Recheck the symptom and check that symptom is not reproduced on the same conditions.

    Is the symptom reproduced?

    YES

    GO TO 3.

    NO

    Inspection End.

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