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 MANUALSSUBARU2007FORESTER F4-2.5L SOHCREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGDESCRIPTION AND OPERATIONAUTOMATIC AIR CONDITIONINGIN-VEHICLE SENSOR
2007 Subaru Forester F4-2.5L SOHC
In-Vehicle Sensor
2007 Subaru Forester F4-2.5L SOHCSECTION In-Vehicle Sensor
IN-VEHICLE SENSOR
The in-vehicle sensor detects the cabin temperature and sends an electric signal corresponding to the temperature to the A/C control module.
This sensor consists of an aspirator and a thermistor, the resistance of which changes in inverse proportion to the temperature. The aspirator operates by a vacuum generated in the heater unit (only when the blower unit is turned on).
The in-vehicle sensor detects the cabin temperature and sends an electric signal corresponding to the temperature to the A/C control module.
This sensor consists of an aspirator and a thermistor, the resistance of which changes in inverse proportion to the temperature. The aspirator operates by a vacuum generated in the heater unit (only when the blower unit is turned on).
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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.