Outline Of Diagnosis

Detect the malfunction of the engine oil temperature sensor output properties. Using the following two diagnoses, judge as NG when either is NG.

• Diagnosis 1 (correlation diagnosis):  After the engine starts after the specified period of soaking time has elapsed, diagnose by correlation between engine oil temperature sensor value, engine coolant temperature sensor value and intake air temperature sensor value. Judge as NG when the differences are both above the specified value by comparing between engine oil temperature and engine coolant temperature, engine oil temperature and intake air temperature.
• Diagnosis 2 (function diagnosis):  Judge as NG when engine oil temperature does not rise to the specified value regardless of an engine running condition that clears certain conditions.