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.
Charge Air Cooler Coolant Temperature Sensor
FUNCTIONS WITHIN THE SYSTEM
ECM receives the charge air cooler coolant temperature signal from the charge air cooler coolant temperature sensor and performs various control.
INDIVIDUAL FUNCTION WITHIN THE SYSTEM
The charge air cooler coolant temperature sensor is used to detect the charge air cooler coolant temperature.
INDIVIDUAL OPERATION
The charge air cooler coolant temperature sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases.
| Temperature [°C (°F)] | Voltage * (V) | Resistance (kΩ) |
|---|---|---|
| -10 (14) | 4.4 | 7.0 - 11.4 |
| 20 (68) | 3.5 | 2.10 - 2.90 |
| 50 (122) | 2.2 | 0.68 - 1.00 |
| 90 (194) | 0.9 | 0.236 - 0.260 |
*: These data are reference values and are measured between ECM terminals and sensor ground.
Component Location
The charge air cooler coolant temperature sensor is mounted in the middle of the charge air cooler cooling electric water pump and sub radiator.
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.