Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSFORD2009RANGER 2D PICKUP, 2.3 D, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 97 (HVAC CONTROL SYSTEM- GENERAL INFORMATION AND DIAGNOSTICS)DIAGNOSTIC TESTSCLIMATE CONTROL SYSTEMSYMPTOM CHART - CLIMATE CONTROL SYSTEMS

2009 Ford Ranger 2D Pickup, 2.3 D, Automatic

Symptom Chart - Climate Control Systems

2009 Ford Ranger 2D Pickup, 2.3 D, AutomaticSECTION Symptom Chart - Climate Control Systems

WARNING: This page is about a different car, the 2008 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Some PCM DTCs may inhibit A/C operation. If any PCM DTCs are retrieved, diagnose those first. Refer to Introduction - Gasoline Engines article.

Condition	Possible Sources	Action
Incorrect/erratic direction of airflow from outlets	No vacuum to the function selector switch Function selector switch leaks vacuum Air distribution door binding/stuck Vacuum line kinked/pinched Vacuum control motor Vacuum reservoir tank Vacuum actuator arm not connected to the door lever	Go to Pinpoint Test A .
Insufficient, erratic or no heat	Low engine coolant level Engine overheating Heater control valve Plugged or partially plugged heater core Temperature blend door binding/stuck Temperature blend door actuator Temperature blend door control cable damaged/disconnected	Go to Pinpoint Test B .
The air conditioning (A/C) is inoperative/does not operate correctly	Fuse A/C control relay Circuit open/short A/C cycling switch A/C system discharged/low charge Pressure cutoff switch Function selector switch	Go to Pinpoint Test C .
The air conditioning (A/C) is always on	Circuit short A/C cycling switch A/C control relay Function selector switch	Go to Pinpoint Test D .
Insufficient air conditioning (A/C) cooling	Restricted A/C evaporator core orifice Restricted A/C evaporator core Low refrigerant level A/C cycling switch Temperature blend door actuator control Engine overheating Condenser airflow restricted Heater control valve	Go to Refrigerant System Tests .
Temperature control is inoperative/does not operate correctly	Temperature blend door actuator Temperature blend door binding/stuck	Go to Pinpoint Test E .
The blower motor is inoperative	Fuse Circuit open/short Blower motor Blower motor relay Function selector switch	Go to Pinpoint Test F .
The blower motor does not operate correctly	Circuit open/short Blower motor resistor Blower motor switch	Go to Pinpoint Test G .

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.