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 MANUALSTOYOTA2007HIGHLANDER 4WD L4-2.4L (2AZ-FE)REPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGCABIN TEMPERATURE SENSOR / SWITCHTESTING AND INSPECTION
2007 Toyota Highlander 4WD L4-2.4L (2AZ-FE)
Cabin Temperature Sensor / Switch: Testing and Inspection
2007 Toyota Highlander 4WD L4-2.4L (2AZ-FE)SECTION Testing and Inspection
ON-VEHICLE INSPECTION
1. INSPECT A/C ROOM TEMPERATURE SENSOR
a. Remove the A/C room temperature sensor.
b. Measure the resistance according to the value(s) in the table.
NOTE:
- Even slightly touching the sensor may change the resistance value. Be sure to hold the connector of the sensor.
- When measuring, the sensor temperature must be the same as the ambient temperature.
HINT: As the temperature increases, the resistance decreases (see the graph).
If the resistance value is not as specified, replace the sensor.
1. INSPECT A/C ROOM TEMPERATURE SENSOR
a. Remove the A/C room temperature sensor.
b. Measure the resistance according to the value(s) in the table.
NOTE:
- Even slightly touching the sensor may change the resistance value. Be sure to hold the connector of the sensor.
- When measuring, the sensor temperature must be the same as the ambient temperature.
HINT: As the temperature increases, the resistance decreases (see the graph).
If the resistance value is not as specified, replace the sensor.
RENDER: 1.0x
NO RELATED
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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.