System Description
SYSTEM DIAGRAM
| Component parts | Function |
|---|---|
| Engine oil pressure sensor | Engine Oil Pressure Sensor . |
| Crankshaft position sensor | Crankshaft Position Sensor . |
| Engine oil temperature sensor | Engine Oil Temperature Sensor . |
| ECM | ECM . |
| Combination meter | ECM transmits the engine oil pressure warning lamp signal via CAN communication. |
SYSTEM DESCRIPTION
- The engine protection control at low engine oil pressure warns the driver of a decrease in engine oil pressure by the engine oil pressure warning lamp before the engine becomes damaged.
- When detecting a decrease in engine oil pressure at an engine speed less than 1, 000 RPM, ECM transmits an engine oil pressure warning lamp signal to the combination meter. The combination meter turns ON the engine oil pressure warning lamp, according to the signal.
- When detecting a decrease in engine oil pressure at an engine speed 1, 000 RPM or more, ECM transmits an engine oil pressure warning lamp signal to the combination meter. When detecting a decrease in engine oil pressure, ECM cuts fuel if the engine speed exceeds the specified value. Refer to Fail-safe .
Decrease in engine oil pressure Engine speed Combination meter Fuel cut Engine oil pressure warning lamp Detection Less than 1, 000 RPM ON * NO 1, 000 RPM or more ON YES *: When detecting a normal engine oil pressure, ECM turns OFF the engine oil pressure warning lamp.