General Information

Component Location





General Description

The fluid of the CVVT is the engine oil and its density changes according to the engine oil temperature. At this time the Oil Temperature Sensor (OTS) helps compensation against the temperature differences. The Oil Temperature Sensor measures the engine oil temperature before the engine oil comes into the Oil-flow Control Valve (OCV).
According to the measured temperature, the Engine Control Module (ECM) compensates the oil-flow control valve operation time.

DTC Description

The purpose of this diagnosis is to detect a stuck oil temperature signal or implausibly low,high signal. For the stuck signal detection, the ECM checks whether after a variation of the calculated oil temperature also a variation of the measured oil temperature is detected and sets DTC P0196 if the variation of the measured oil temperature is lower than the threshold.
For the implausibly high, low signal detection, the ECM compares measured engine oil temperature with calculated oil temperature or coolant temperature and sets DTC P0196 when one of following conditions is met.
1) Measured oil temperature is implausibly low when calculated oil temperature is high.
2) Measured oil temperature is implausibly high when coolant is low without any relevant failure.
3) Measured oil temp.< threshold but calculated oil temp. >threshold

DTC Detecting Condition





Specification





Schematic Diagram





Signal Waveform