Nissan Sentra Service Manual: Engine protection control at low engine oil pressure
ENGINE PROTECTION CONTROL AT LOW ENGINE OIL PRESSURE : System Description
SYSTEM DIAGRAM
INPUT/OUTPUT SIGNAL CHART
| Sensor | Input signal to ECM | ECM function | Actuator |
| Engine oil pressure sensor | Engine oil pressure | Engine protection control
|
Combination meter
|
| 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 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:
P2100, P2103 Throttle control motorrelay
DTC Logic
DTC DETECTION LOGIC
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P2100
ETC MOT PWR-B1
(Throttle actuator “A”
control motor circuit/
open)
ECM detects a voltage of power source for
t ...
U1000 CAN Comm circuit
Description
CAN (Controller Area Network) is a serial communication system for real time
application. It is an on-vehicle
multiplex communication system with high data communication speed and excellent
error detection ability.
Many electronic control units are equipped into vehicles, and e ...
Circuit Inspection
DESCRIPTION
In general, testing electrical circuits is an easy task if it is
approached in a logical and organized method.
Before beginning it is important to have all available information on the
system to be tested. Also, get a thorough
understanding of system operation. Then you w ...
