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 MANUALSJEEP2023WAGONEER CARBIDE, RWDREPAIR AND DIAGNOSISHEATING, VENTILATION & A/C (HVAC)GENERAL SERVICINGHEATING AND AIR CONDITIONING (SERVICE INFORMATION) (1 OF 2)DIAGNOSIS AND TESTINGIN-CAR TEMPERATURE SENSORTEMPERATURE THERMISTOR TEST
2023 Jeep Wagoneer Carbide, RWD
Temperature Thermistor Test
2023 Jeep Wagoneer Carbide, RWDSECTION Temperature Thermistor Test
The in-car temperature sensor uses a temperature thermistor to provide resistance values that correlate with temperature change. Test the thermistor as follows:
- Remove the in-car temperature sensor and place it on a workbench. Refer to SENSOR, TEMPERATURE, IN-CAR, REMOVAL AND INSTALLATION .
- Note the current ambient air temperature of the work area.
- Use an ohm meter and check the resistance between pins 1 and 2 of the in-car temperature sensor. Compare the temperature of the work area to the found resistance value. The resistance should be within specifications as listed in the Resistance and Temperature chart. If not OK, replace the in-car temperature sensor.
RESISTANCE AND TEMPERATURE
| Air Temperature Range | Low Resistance Range (kohm) | High Resistance Range (kohm) |
|---|---|---|
| -21° to -15°C (-5° to 5°F) | 292 ± 1.0 | 223 ± 0.9 |
| -14° to -9°C (6° to 15°F) | 198 ± 0.9 | 161 ± 0.8 |
| -8° to -4°C (16° to 25°F) | 144 ± 0.8 | 123 ± 0.8 |
| -3° to 1°C (26° to 35°F) | 111 ± 0.7 | 95 ± 0.7 |
| 2 to 7°C (36° to 45°F) | 86 ± 0.7 | 70 ± 0.6 |
| 8 to 12°C (46° to 55°F) | 64 ± 0.6 | 55 ± 0.5 |
| 13° to 18°C (56° to 65°F) | 51 ± 0.5 | 42 ± 0.4 |
| 19° to 23°C (66° to 75°F) | 39 ± 0.4 | 33 ± 0.3 |
| 24° to 29°C (76° to 85°F) | 31 ± 0.3 | 26 ± 0.3 |
| 30° to 35°C (86° to 95°F) | 24 ± 0.3 | 20 ± 0.3 |
| 36° to 40°C (96° to 105°F) | 18 ± 0.3 | 16 ± 0.3 |
| 41° to 46°C (106° to 115°F) | 15 ± 0.3 | 13 ± 0.3 |
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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.