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WorksheetsNissan Engine Management System - Post Test
Total questions: 15
Worksheet time: 15mins
When some sensor fails ECM switches into alternative sensor signal which keeps engine running with reduced performance, what is this mode called?
Cruise mode
Back up mode
Limp-Home mode
Sleep mode
When you are performing the compression pressure test and you find a low pressure incident to narrow down the cause you will pour small amount of oil, so if the pressure improved so the possible cause it will be?
Piston and valve seat.
Valve and valve seat.
Piston rings.
Piston and valve seat.
When DTC detected by ECM, records driving conditions such as the calculated load value, engine coolant temperature, engine speed, vehicle speed and intake manifold pressure, what does this called?
VDR(Vehicle Data Recorder)
NVR(Nissan Vehicle Data Recorder)
FFD(Freeze Frame Data)
Data Monitor
Choose the 3 CORRECT factors that are crucial for the ECCS?
Engine, catalyst, tail pipe.
Fuel flow system, air flow system, electronic (ignition) system.
ECM, injector, spark plug
TCM, injector, spark plug
Choose the CORRECT description about the fuel injection quantity control system?
Camshaft position sensor signal is mainly used.
Engine coolant temperature sensor signal is mainly used.
Mass air flow sensor signal is mainly used.
Knock Sensor mainly used.
When the air-fuel ratio is Lean (higher fuel content) than the stoichiometric air-fuel ratio (14.7), choose the CORRECT gas which three-way catalyst conversion ratio decreases?
NOx
HC
CO
CO2
Choose the WRONG troubleshooting method for a knocking engine?
Delay the ignition timing
Replace the coolant
Remove the carbon in the combustion chamber
use fuel that has a high-octane number
Choose the CORRECT oil grade for gasoline engine?
API grade SG or SH
API grade SJ, SL or SM
ILSAC grade GF-1 or GF-2
The ECM controls the length of time the valve remains open , that injection pulse duration ?
True
False
Which of the following condition not part of fuel injection increase compensation mode?
When starting the engine
During deceleration
During acceleration
During warm-up
Accelerator pedal position sensor has two sensors. These sensors are a kind of?
potentiometers
hot wire
Thermistor
Induction
The sensor use to senses the piston position and identify a particular cylinder position called?
Crankshaft position sensor
Camshaft position sensor
Cylinder position sensor
Knock sensor
The required operating temperature of A/F Sensor approximately..........?
700°C
300°C
900°C
400°C
The OBD-II system performs the six major diagnoses and CCM(Comprehensive Component Monitoring) diagnosis , Which of following is not part of it?
Three-Way Catalyst
EGR System
EVAP System
Back fire
Choose the CORRECT function of the rear O2 sensor (exhaust sensor behind the catalyst).
It controls air-fuel ratio precisely
It detects catalyst deterioration
It prevents knocking
It controls fuel
