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 MANUALSHONDA2009PILOT TOURING, 3.5 4REPAIR AND DIAGNOSISHEATING, VENTILATION & A/C (HVAC)HVAC CONTROL SYSTEMSCLIMATE CONTROLHUMIDITY/IN-CAR TEMPERATURE SENSOR TESTIN-CAR TEMPERATURE SENSOR TEST
2009 Honda Pilot Touring, 3.5 4
In-Car Temperature Sensor Test
2009 Honda Pilot Touring, 3.5 4SECTION In-Car Temperature Sensor Test
NOTE:
Before testing, check for HVAC DTCs. (see GENERAL TROUBLESHOOTING INFORMATION
)
- Remove the humidity/in-car temperature sensor (see HUMIDITY/IN-CAR TEMPERATURE SENSOR REPLACEMENT ).
- Connect the humidity/in-car temperature sensor 4P connector.
- Test the humidity/in-car temperature sensor while holding it in front of the dashboard center vent.
- Measure the resistance with the system set to Max Cool.
- Measure the resistance with the system set to Max Hot.
- Compare the resistance reading between terminals No. 4 and No. 3 of the humidity/in-car temperature sensor with the specifications shown in the graph; the resistance should be within the specifications.
- If the resistance is not as specified, replace the humidity/in-car temperature sensor (see HUMIDITY/IN-CAR TEMPERATURE SENSOR REPLACEMENT ).
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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.