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:

Hood
Pull the hood lock release handle 1 located below the instrument panel until the hood springs up slightly. Locate the lever 2 in between the hood and grille and push the lever sideways with your fingertips. Raise the hood 3 . Remove the support rod 4 and insert it into the slo ...

Trunk lid release switch
WARNING Do not drive with the trunk lid open. This could allow dangerous exhaust gases to be drawn into the vehicle. See “Exhaust gas” in the “Starting and driving” section of this manual. Closely supervise children when they are around cars to prevent ...

Washer nozzle & tube
Exploded view Check valve Washer tube Washer tank Washer pump Washer nozzle Clip Washer nozzle Washer nozzle : removal and installation REMOVAL Disconnect the washer nozzle from the hood by pushing on the nozzle in the order and direction shown. Disconnect the ...