Pinpoint Test Ah: Reduced Outlet Airflow

Possible Sources
- Plugged cabin air filter
- Improper A/C system refrigerant charge
- Blower motor

AH1 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 AH2

AH2 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 AH3

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

AH3 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°C (70°F).

Carry out the Refrigerant System Tests. REFER to: Refrigerant System Tests - 2.3L EcoBoost (199kW/270PS) . REFER to: Refrigerant System Tests - 2.7L EcoBoost (238kW/324PS) .

Did the system pass the refrigerant system tests?

Yes	The system is operating correctly at this time.

No	CHECK the A/C system for leaks. GO to Pinpoint Test AJ After leak is repaired, RECHARGE the A/C system. REFER to: Air Conditioning (A/C) System Recovery, Evacuation and Charging .