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.
Cabin Temperature Sensor
Cabin temperature sensor is supplied with 5.0 volts through a 10,000 ohm resistor in ACC control module from 39-pin connector terminal No. 20 (Blue/Yellow wire). Cabin temperature sensor ground is supplied through ACC control module connector terminal No. 39 (Yellow/Brown wire). As temperature decreases sensor resistance increases. Cabin temperature sensor suction motor is supplied with 12 volts from ACC control module connector terminal No. 15 (Yellow/Red wire). Suction motor ground is supplied through fan blower motor switch connector terminal No. 1 (Black wire).
| Temperature °F (°C) | Ohms |
|---|---|
| 32 (0) | 32,500 |
| 50 (10) | 19,800 |
| 68 (20) | 12,500 |
| 77 (25) | 10,000 |
| 86 (30) | 8000 |
| 104 (40) | 5300 |
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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.
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