Description And Operation
The oil temperature sensor is a two wire sensor located on the variable valve actuation assembly at the cylinder head. The sensor probe is mounted to the variable valve actuation assembly through an access hole. A compression washer seals the oil temperature sensor to the variable valve actuation assembly.
The oil temperature sensor is a variable resistor that measures the temperature of the engine oil. The Powertrain Control Module (PCM) supplies a 5 volt reference and a ground to the sensors low reference signal circuit. When the oil temperature is low, the sensor resistance is high. When the oil temperature is high, the sensor resistance is low.