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.
2008 Kia Optima V6-2.7LFACTORY OEM SERVICE PROCEDURE
Oil Temperature Sensor For ECM: Testing and Inspection
INSPECTION
The CVVT Oil Temperature Sensor (OTS) is a negative coefficient thermistor used by the PCM to measure engine oil temperature for the purpose of adjusting CVVT calculations.
SPECIFICATION
CIRCUIT DIAGRAM
COMPONENT INSPECTION
1. Turn ignition switch OFF.
2. Disconnect OTS connector.
3. Remove the OTS.
4. After immersing the thermistor of the sensor into water (or engine coolant), measure resistance between OTS terminals 1 and 2.
5. Check that the resistance is within the specification.
Specification: Refer to SPECIFICATION.
Factory Service Tools
Use the Manual With the Right Hardware
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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.