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Inspection Flow

WARNING: This page is about a different car, the 2018 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.
  1. CONFIRM SYMPTOM BY PERFORMING OPERATION CHECK - TEMPERATURE DECREASE 
    1. Press the A/C switch.
    2. Turn temperature control dial counterclockwise to maximum cold.
    3. Check for cold air at discharge air outlets.

    Can a symptom be duplicated?

    YES

    GO TO 3

    NO

    GO TO 2

  2. CHECK FOR ANY SYMPTOMS 

    Perform a complete operational check and check for any symptoms. Refer to Work Procedure .

    Does another symptom exist?

    YES

    Refer to Symptom Table .

    NO

    System OK.

  3. CHECK FOR SERVICE BULLETINS 

    Check for any service bulletins.

    GO TO 4

  4. CHECK DRIVE BELTS 

    Check A/C compressor belt tension. Refer to Inspection .

    Is the inspection result normal?

    YES

    GO TO 5

    NO

    Adjust or replace compressor belt. Refer to Adjustment .

  5. CHECK AIR MIX DOOR MOTOR RH OPERATION 

    Check and verify air mix door mechanism for smooth operation.

    Does air mix door operate correctly?

    YES

    GO TO 6

    NO

    Check air mix door motor RH circuit. Refer to Diagnosis Procedure .

  6. CHECK COOLING FAN MOTOR OPERATION 

    Check and verify cooling fan motor for smooth operation.

    Does cooling fan motor operation correctly?

    YES

    GO TO 7

    NO

    Check cooling fan motor. Refer to Component Function Check .

  7. CHECK RECOVERY/RECYCLING EQUIPMENT BEFORE USAGE 

    Check recovery/recycling equipment before connecting to vehicle. Verify there is no pressure in the recovery/recycling equipment by checking the gauges. If pressure exists, recover refrigerant from equipment lines.

    GO TO 8

  8. CHECK REFRIGERANT PURITY 
    1. Connect recovery/recycling equipment to vehicle.
    2. Confirm refrigerant purity in supply tank using recovery/recycling and refrigerant identifier.

    Is the inspection result normal?

    YES

    GO TO 9

    NO

    Check contaminated refrigerant. Refer to Description .

  9. CHECK REFRIGERANT PRESSURE 

    Check refrigerant pressure with manifold gauge connected. Refer to Inspection .

    Is the inspection result normal?

    YES

    Perform diagnostic work flow. Refer to Workflow .

    NO

    GO TO 10

  10. CHECK FOR EVAPORATOR FREEZE UP 

    Start engine and run A/C. Check for evaporator freeze up.

    Does evaporator freeze up?

    YES

    Perform diagnostic work flow. Refer Workflow .

    NO

    GO TO 11

  11. CHECK AIR DUCTS 

    Check ducts for air leaks.

    Is the inspection result normal?

    YES

    System OK.

    NO

    Repair air leaks.

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