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Pinpoint Test Ag: Reduced Outlet Airflow

  1. Possible Sources 

    • Plugged cabin air filter
    • Improper A/C system refrigerant charge
    • Blower motor

  2. AG1 CHECK THE CABIN AIR FILTER

    • Ignition OFF.

    • Inspect the cabin air filter for possibly plugged or wet. REFER to: Cabin Air Filter 

    Is the cabin air filter plugged? 

    Yes  REPLACE or REPAIR as needed.
    No  GO to  AG2

  3. AG2 CHECK THE BLOWER MOTOR OPERATION

    • Ignition ON.

    • Using the HVAC controls, select panel mode, set temperature to mid range.

    • Operate the blower motor through all speeds.

    • Turn off the blower motor.

    Does the blower motor operate properly? 

    Yes  GO to  AG3
    No  DIAGNOSE the blower motor concern. GO to Pinpoint Test N 

  4. AG3 CHECK THE AIR CONDITIONING (A/C) SYSTEM FOR PROPER CHARGE

    NOTE: Proper Air Conditioning (A/C) system diagnosis on a vehicle's compressor is dependent on correct refrigerant system charge and tested in ambient temperatures above 21. 1 deg. C (70 deg. F).

    Did the system pass the refrigerant system tests? 

    Yes  The system is operating correctly at this time.
    No  REPAIR the concern found in the refrigerant system tests chart.
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