Nissan Sentra Service Manual: Engine protection control at low engine oil pressure

Nissan Sentra Service Manual / Engine / Engine control system / System / Engine protection control at low engine oil pressure

ENGINE PROTECTION CONTROL AT LOW ENGINE OIL PRESSURE : System Description

SYSTEM DIAGRAM

INPUT/OUTPUT SIGNAL CHART

INPUT/OUTPUT SIGNAL CHART

Sensor	Input signal to ECM	ECM function	Actuator
Engine oil pressure sensor	Engine oil pressure	Engine protection control Oil pressure warning lamp signal Fuel cut control	Combination meter Oil pressure warning lamp
Crankshaft position sensor (POS)	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.

*: When detecting a normal engine oil pressure, ECM turns OFF the oil

*: When detecting a normal engine oil pressure, ECM turns OFF the oil pressure warning lamp.

Intake manifold tuning system

INTAKE MANIFOLD TUNING SYSTEM : System Description SYSTEM DIAGRAM SYSTEM DESCRIPTION This system switches the length of intake air path according to the low-to-medium speed range or high spe ...

Fuel filler cap warning system

SYSTEM DIAGRAM SYSTEM DESCRIPTION The fuel filler cap warning system alerts the driver to the prevention of the fuel filler being left uncapped and malfunction occurrences after refueling, by ...

Other materials:

Headlamp
Aiming adjustment Preparation before adjusting Before performing aiming adjustment, check the following: Ensure all tires are inflated to correct pressure. Place vehicle and screen on level surface. Ensure there is no load in vehicle other than the driver (or equivalent weight placed in ...

Ipdm-e branch line circuit
Diagnosis Procedure 1.Check connector Turn the ignition switch off. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the ipdm e/r for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? Yes ...

Rear shock absorber
Exploded View Rear suspension beam Shock absorber Bound bumper Bound bumper cover Washer Bushing Distance tube Bushing Washer Piston rod lock nut Cap Front Removal and Installation REMOVAL Remove the rear shock tower access flap. Remove the cap from the rear s ...