Nissan Versa (N17): Engine protection control at low engine oil pressure

Nissan Versa 2nd generation (N17) Service Manual / Engine / Engine control system (EC) / Engine protection control at low engine oil pressure

Engine protection control at low engine oil pressure : system diagram

Engine protection control at low engine oil pressure : system diagram

Engine protection control at low engine oil pressure : system description

INPUT/OUTPUT SIGNAL CHART

Sensor Input signal to ECM ECM function Actuator
Engine oil pressure sensor Engine pressure Engine protection control

- Oil pressure warning lamp signal

 Combination meter

- Oil pressure warning lamp
Crankshaft position sensor (POS) Engine speed

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
Oil pressure warning lamp
Detection Less than 1,000 rpm ON*
1,000 rpm or more ON

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