Deck 69: Ignition System Components and Operation

Question 1

The following statements are all correct EXCEPT ________.

A)Knock sensors require voltage input from the PCM to function properly.
B)The knock sensor may be ignored by the PCM at idle.
C)When the PCM detects detonation using the knock sensor, it will retard ignition timing.
D)Ignition timing may be either ATDC, at TDC, or BTDC.

Answer 1

Knock sensors require voltage input from the PCM to function properly.

Question 2

Which statement below is correct?

A)It is not possible to control the ignition timing for each cylinder separately
B)All coil on plug systems require ignition wires
C)Coil on plug systems use one ignition coil per cylinder
D)Ignition control circuits cannot sense the voltage required to fire a spark plug

Answer 2

Coil on plug systems use one ignition coil per cylinder

Question 3

Waste spark ignition is being discussed. Technician A says it requires more voltage to fire the compression cylinder than the companion cylinder. Technician B says waste spark systems that use compression sensing electronics do not require a camshaft sensor for engine position. Which technician is correct?

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

Answer 3

Both technicians A and B

Question 4

The following statements are all correct EXCEPT ________.

A)Waste spark systems do not need a timing signal from the PCM when cranking the engine.
B)Waste spark systems use a signal from the PCM once the engine is running.
C)Up-integrated ignition controls use the PCM to control ignition timing.
D)No ignition system uses the PCM to control ignition timing.

Question 5

Technician A says that in bypass mode, the ignition system is timed by the ignition module. Technician B says that in bypass mode, the ignition system does not use the PCM to time spark plug firing. Which technician is correct?

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

Question 6

How does a waste-spark ignition system fire the spark plugs?

A)The waste spark is sent to the cylinder next to the cylinder being fired
B)The same plug always is fired straight or reverse polarity
C)The polarity reverses at each firing (flip flops)
D)Both A and C

Question 7

All these terms have been used to describe communication between the ignition module and PCM EXCEPT ________.

A)DIS
B)SPOUT
C)EST
D)IC

Question 8

Two technicians are discussing distributor ignition. Technician A says that the pickup coil or optical sensor in the distributor is used to pulse the ignition module (igniter). Technician B says that some distributor ignition systems use an optical sensor. Which technician is correct?

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

Question 9

Technician A says that the ignition timing cannot be adjusted on waste spark ignition systems. Technician B says that most waste spark systems use a crankshaft position sensor. Which technician is correct?

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

Question 10

Technician A says that a two-wire COP system uses the PCM to trigger the coil. Technician B says that a three-wire COP system has an ICM built into the coil assembly. Which technician is correct?

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

Question 11

The ignition system is usually divided into ________ different sections.

A)Four
B)Two
C)One
D)Three

Question 12

Which statement below is correct?

A)Most ignition systems work by switching the positive side of the coil windings to power.
B)Most ignition systems work by switching the circuit to power the ignition coil's secondary windings.
C)Most ignition systems work by switching the negative side of the coil primary windings to ground.
D)Most ignition systems work by switching the circuit grounding the ignition coil's secondary windings.

Question 13

Which of these terms is specified by the Society of Automotive Engineers (SAE) as the term describing an ignition system that does NOT use a distributor?

A)DI
B)ND
C)IGN
D)EI

Question 14

The ignition system pickup coil or trigger is usually electrically connected to the ________.

A)Ignition module
B)Ignition coil
C)Rotor
D)Distributor cap

Question 15

What is the principle used to create high voltage from low voltage?

A)Electromechanic induction
B)Electromagnetic induction
C)Electromagnetic multiplication
D)Electromagnetic magnification

Question 16

Technician A says that the primary and secondary ignition systems are never connected. Technician B says that the primary and secondary windings are connected in some ignition coils. Which technician is correct?

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

Question 17

Technician A says that a waste spark ignition system fires two spark plugs at the same time. Technician B says that the waste spark ignition system uses ignition coils connected to companion cylinders. Which technician is correct?

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

Question 18

Which statement below is correct?

A)Turning on the low voltage primary coil induces a high voltage in the secondary windings.
B)No voltage is induced in the secondary circuit.
C)No voltage is induced in the primary circuit.
D)Turning off the low voltage primary coil induces a high voltage in the secondary windings.

Question 19

Which statement below is correct?

A)The primary coil windings are designed for higher current (2-6 Amperes).
B)The primary coil windings are made of thinner wire than the secondary windings.
C)The secondary coil windings are designed for higher current (2-6 Amperes).
D)The primary coil windings have more turns of wire than the secondary windings.

Question 20

Which switching device used below is also called a "magnetic pulse generator"?

A)Ignition coil
B)Optical sensor
C)Hall-effect switch
D)Pickup coil

Question 21

Which switching device uses a shutter blade and sensor to detect a magnetic field?

A)Pickup coil
B)Hall-effect switch
C)Ignition coil
D)Optical sensor

Question 22

Which switching device uses LEDs?

A)Pickup coil
B)Hall effect
C)Optical sensor
D)Magnetic reluctor

Question 23

Technician A looks for engine speed (RPM) when cranking an engine that will not start. Technician B says that a problem in the primary circuit could make the tachometer not work. Which technician is correct?

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

Question 24

Which switching device creates its own electrical voltage pulse?

A)Pickup coil
B)Optical sensor
C)Hall-effect switch
D)Ignition coil

Question 25

How many ignition coils should you expect to find on a V6 engine using a waste spark system?

A)Six
B)One
C)Two
D)Three