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

Checking output signals from oil temperature sensor every 15 sec. under detecting condition, if an signal is low for more than 12.5 sec., ECM sets P0197. MIL (Malfunction Indication Lamp) turns on when the malfunction lasts till consecutive 2 driving cycle.

DTC Detecting Condition





Specification





Diagnostic Circuit Diagram





Signal Waveform & Data












Fig.1) Normal waveform of EOTS (176 °F)
Fig.2) Normal data of IATS & ECTS & EOTS (89.6 °F) at IG on
Fig.3) Normal data of IATS & ECTS & EOTS (195.8 °F) after warming up