System Description
SYSTEM DIAGRAM
| Component parts | Function |
|---|---|
| Engine oil pressure sensor | Refer to Engine Oil Pressure Sensor . |
| Crankshaft position sensor | Refer to Crankshaft Position Sensor . |
| Engine temperature sensor | Refer to Engine Oil Temperature Sensor . |
| ECM | Refer to ECM . |
| Combination meter | It receives the engine oil pressure waning lamp signal from ECM via CAN communication. |
| Fuel injector | Refer to Fuel Injector . |
INPUT/OUTPUT SIGNAL CHART
| Sensor | Input signal to ECM | ECM function | Actuator |
|---|---|---|---|
| Engine oil pressure sensor | Engine pressure | Engine protection control
|
Combination meter
|
| Crankshaft position sensor | Engine speed | ||
| Engine oil temperature sensor | Engine oil temperature |
SYSTEM DESCRIPTION
- The engine protection control at low engine oil pressure warns the driver of a decrease in engine oil pressure by the oil pressure warning lamp a 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 oil pressure warning lamp signal to the combination meter. The combination meter turns ON the oil pressure warning lamp, according to the signal.
Decrease in engine oil pressure Engine speed Combination meter Fuel cut 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 oil pressure warning lamp.