Question 1

When is the spark controlled compression ignition (SPCCI) mode engaged on a vehicle with the Mazda SkyActiv-X system?

Accepted Answer

A)   During cruise conditions
B)   During cold engine warmup
C)   While under heavy load
D)   At high engine speeds A

Question 2

On a Honda VTEC system, which of the following inputs are used by the PCM to determine whether to energize the VTEC oil solenoid?

Accepted Answer

A)   The RPM must be in a specific range
B)   The vehicle speed must exceed 19 MPH
C)   The coolant temperature must exceed 140 degrees F
D)   All of the above are correct D

Question 3

The Toyota air-fuel ratio sensor uses a control reference voltage of ______.

Accepted Answer

A)   0.450 V
B)   3.3 V
C)   5 V
D)   6.1 V B

Question 4

Which statement is true concerning the Honda linear air-fuel sensor?

Accepted Answer

A)   The sensor uses a 5-volt control reference signal.
B)   The sensor can measure air/fuel ratios as lean as 22:1.
C)   The sensor is used only on vehicles equipped with a continuously variable transmission.
D)   The sensor can have up to 10 wires.

Question 5

What is the resistance specification for a Nissan crankshaft (CKP) sensor at room temperature?

Accepted Answer

A)   470 to 570 K Ω
B)   470 to 570 Ω
C)   47 to 57 K Ω
D)   None of the above

Question 6

What is the name of the electronic engine control system as used on a Honda?

Accepted Answer

A)   ECCS
B)   TCCS
C)   MECS
D)   PGM-FI

Question 7

How many camshaft (CMP) sensors (also known as TDC sensors) are used on Honda systems?

Accepted Answer

A)   1
B)   2
C)   3
D)   4

Question 8

What is the name of the electronic engine control system as used on a Nissan?

Accepted Answer

A)   ECCS
B)   TCCS
C)   MECS
D)   PGM-FI

Question 9

The Honda i-VTEC is being discussed. Technician A says the system can control variable lift and duration. Technician B says the system can control valve timing and can disable valve operation. Who is correct?

Accepted Answer

A)   Technician A only
B)   Technician B only
C)   Both A and B
D)   Neither A nor B

Question 10

Oxygen sensors are being discussed. Technician A says the zirconia type sensor changes resistance with the presence of oxygen. Technician B says the titania type sensor changes voltage with the presence of oxygen. Who is correct?

Accepted Answer

A)   Technician A only
B)   Technician B only
C)   Both A and B
D)   Neither A nor B

Question 11

Some Nissan systems are equipped with a fuel temperature sensor. What is the purpose of this sensor?

Accepted Answer

A)   It is used by the PCM to regulate fuel pressure
B)   It is used by the PCM to determine changes in fuel viscosity
C)   It is used by the PCM to determine when to run the fuel system leak detection software
D)   Both B and C are correct.

Question 12

Where is the fuel pressure regulator located on a Toyota equipped with a return less fuel system?

Accepted Answer

A)   Under the hood at the outlet of the fuel rail
B)   Under the hood at the inlet of the fuel rail
C)   In the fuel tank above the fuel pump
D)   Above the fuel tank in the fuel line

Question 13

What is the name of the electronic engine control system as used on a Toyota?

Accepted Answer

A)   ECCS
B)   TCCS
C)   MECS
D)   PGM-FI

Question 14

Fuel flow and pressure control on a Nissan is being discussed. Technician A says the system uses a fuel pump control module. Technician B says the system uses a fuel tank temperature sensor is used. Who is correct?

Accepted Answer

A)   Technician A only
B)   Technician B only
C)   Both A and B
D)   Neither A nor B

Question 15

Toyota's VVT-i system is being discussed. Technician A says the VVT-i system controls valve overlap. Technician B says the VVT-i timing mechanism allows up to four distinct camshafts "settings". Who is correct?

Accepted Answer

A)   Technician A only
B)   Technician B only
C)   Both A and B
D)   Neither A nor B

Question 16

The air conditioning cut out feature on a Nissan disengages the air conditioning compressor under all of these conditions EXCEPT:

Accepted Answer

A)   when the throttle is fully open
B)   during start up cranking
C)   during deceleration
D)   at high engine speeds

Question 17

The waste spark ignition system on the newest Toyota vehicles is being discussed. Technician A says the coils are mounted directly on top of the spark plugs. Technician B says the system uses secondary wires to deliver the ignition spark. Who is correct?

Accepted Answer

A)   Technician A only
B)   Technician B only
C)   Both A and B
D)   Neither A nor B

Question 18

What is the resistance of a Toyota engine coolant temperature (ECT) sensor at room temperature?

Accepted Answer

A)   200 Ω
B)   2000 K Ω
C)   2000  Ω
D)   200  K Ω

Question 19

What type of signal is produced by a Toyota mass air flow (MAF) sensor?

Accepted Answer

A)   continuous analog voltage signal
B)   continuous digital voltage signal
C)   fluctuating analog voltage signal
D)   fluctuating digital voltage signal

Question 20

The CMP sensor on a Nissan is being discussed. Technician  A says the sensor is a Hall effect type. Technician B says the sensor produces a digital signal. Who is correct?

Accepted Answer

A)   Technician A only
B)   Technician B only
C)   Both A and B
D)   Neither A nor B

Exam 16: Asian Computerized Engine Controls

When is the spark controlled compression ignition (SPCCI) mode engaged on a vehicle with the Mazda SkyActiv-X system?

On a Honda VTEC system, which of the following inputs are used by the PCM to determine whether to energize the VTEC oil solenoid?

The Toyota air-fuel ratio sensor uses a control reference voltage of ______.

Which statement is true concerning the Honda linear air-fuel sensor?

What is the resistance specification for a Nissan crankshaft (CKP) sensor at room temperature?

What is the name of the electronic engine control system as used on a Honda?

How many camshaft (CMP) sensors (also known as TDC sensors) are used on Honda systems?

What is the name of the electronic engine control system as used on a Nissan?

The Honda i-VTEC is being discussed. Technician A says the system can control variable lift and duration. Technician B says the system can control valve timing and can disable valve operation. Who is correct?

Oxygen sensors are being discussed. Technician A says the zirconia type sensor changes resistance with the presence of oxygen. Technician B says the titania type sensor changes voltage with the presence of oxygen. Who is correct?

Some Nissan systems are equipped with a fuel temperature sensor. What is the purpose of this sensor?

Where is the fuel pressure regulator located on a Toyota equipped with a return less fuel system?

What is the name of the electronic engine control system as used on a Toyota?

Fuel flow and pressure control on a Nissan is being discussed. Technician A says the system uses a fuel pump control module. Technician B says the system uses a fuel tank temperature sensor is used. Who is correct?

Toyota's VVT-i system is being discussed. Technician A says the VVT-i system controls valve overlap. Technician B says the VVT-i timing mechanism allows up to four distinct camshafts "settings". Who is correct?

The air conditioning cut out feature on a Nissan disengages the air conditioning compressor under all of these conditions EXCEPT:

The waste spark ignition system on the newest Toyota vehicles is being discussed. Technician A says the coils are mounted directly on top of the spark plugs. Technician B says the system uses secondary wires to deliver the ignition spark. Who is correct?

What is the resistance of a Toyota engine coolant temperature (ECT) sensor at room temperature?

What type of signal is produced by a Toyota mass air flow (MAF) sensor?

The CMP sensor on a Nissan is being discussed. Technician A says the sensor is a Hall effect type. Technician B says the sensor produces a digital signal. Who is correct?