Nissan Engine Management System - Post Test

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