COMPONENT LOCATION |
GENERAL DESCRIPTION |
The CVVT uses the engine oil to change the cam timing and its density changes according to the engine temperature. The Oil Temperature Sensor (OTS) signal is used by the ECM to compensation for the temperature differences. The Oil Temperature Sensor measures the engine oil temperature before the engine oil flows 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 the oil temperture, coolant temperature and intake air temperature every 25 sec. under detecting condition, if the difference in temperature at start-up exceeds threshold value, ECM sets P0196.
DTC DETECTING CONDITION |
Item | Detecting Condition | Possible Cause | |||||
DTC Strategy |
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Enable Conditions | Case 1 |
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Case 2 |
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Threshold value | Case 1 |
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Case 2 |
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Diagnosis Time |
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MIL On Condition |
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SPECIFICATION |
Temperature(°C/°F) | Resistance(kΩ) |
-40°C | 52.15kΩ |
-20°C | 16.52kΩ |
0°C | 6.0kΩ |
20°C | 2.45kΩ |
40°C | 1.11kΩ |
60°C | 0.54kΩ |
80°C | 0.29kΩ |
DIAGNOSTIC CIRCUIT DIAGRAM |
SIGNAL WAVEFORM & DATA |
Fig.1) Normal data of IATS & ECTS & EOTS at ig on
Fig.2) Normal data of IATS & ECTS & EOTS after warming up.
Fig.3) Normal waveform of EOTS at 76°C (168.4°F)
MONITOR GDS DATA |
1. | Connect GDS to Data Link Connector(DLC). |
2. | IG “ON”. |
3. | Select “DTC” button, and then Press “DTC Status” to check DTC’s information from the DTCs menu. |
4. | Read “DTC Status” parameter. |
5. | Is parameter displayed “Present fault”?
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COMPONENT INSPECTION |
■ Check OTS resistance |
1. | IG “OFF” and disconnect OTS connector. |
2. | Measure resistance between signal and ground terminals of OTS connector after checking out the temperature of EOTS with GDS (Component Side) Specification :
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3. | Is the measured resistance within specification ?
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