Exam 6: Ignition System and Related Input Sensors Output Actuators Diagnosis

Technician A says the spark plugs are in the secondary ignition circuit. Technician B says the ignition module is part of the secondary ignition circuit. Who is correct?

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Question 1

Correct Answer:

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What is the average spark plug current flow time in an EI system?

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Question 2

Correct Answer:

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The average current flow time is less than 1.5 milliseconds.

Describe the benefits of the iridium spark plug compared to those of the platinum spark plug.

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Question 3

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The iridium spark plug is the longest-life spark plug available, lasting 50 percent longer than a platinum spark plug (150,000 miles compared to 100,000 for the platinum plug), is far more resistant to corrosion and wear, and has a much higher melting point than a platinum spark plug.

The coil-on-plug ignition system is sometimes referred to as a coil-over-plug ignition system.

(True/False)

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Question 4

Compared to electronic ignition systems with distributors, EI systems without distributors provide:

(Multiple Choice)

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Question 5

Ignition dwell time is the length of time the primary circuit is turned on prior to each cylinder firing.

(True/False)

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Question 6

A random misfire code P0300 is usually associated with an ignition system failure.

(True/False)

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Question 7

Technician A says a Hall Effect switch voltage signal goes from 12 V to 0 V when the rotating metal blade enters the switch. Technician B says a Hall Effect switch produces an analog voltage signal. Who is correct?

(Multiple Choice)

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Question 8

Changes in engine load also affect when the ignition spark should be delivered.

(True/False)

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Question 9

What is spark plug heat range, and how do the heat ranges of hot plugs and cold plugs differ?

(Essay)

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Question 10

What generic OBD II DTCs will be set if a misfire condition is detected?

(Essay)

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Question 11

The independent ignition system offers greater reliability and a lower incidence of cylinder misfires compared to past ignition systems.

(True/False)

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Question 12

The normal required secondary coil voltage is 10,000 volts. With different system designs, a coil's maximum secondary voltage can exceed 80,000 volts. The difference between and required secondary coil voltage and the maximum secondary coil voltage is referred to as:

(Multiple Choice)

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Question 13

When an ignition system misfires or spark plugs fire at the wrong time, which of the following will be adversely affected?

(Multiple Choice)

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Question 14

What is spark plug reach, and why can't spark plugs of different reaches be used interchangeably?

(Essay)

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Question 15

In a waste spark system, what happens with the cylinders while a pair of spark plugs is firing?

(Essay)

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Question 16

During the power stroke, when must the air/fuel charge be fully ignited in order for maximum combustion pressure and power production to occur?

(Short Answer)

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Question 17

What are the advantages of the coil-on-plug and coil-near-plug systems compared to earlier ignition system designs?

(Essay)

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Question 18

Misfires are more likely to occur under lower engine speeds and decreased load conditions.

(True/False)

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Question 19

What is the designated service life of an iridium spark plug?

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Question 20

Showing 1 - 20 of 35

Technician A says the spark plugs are in the secondary ignition circuit. Technician B says the ignition module is part of the secondary ignition circuit. Who is correct?

What is the average spark plug current flow time in an EI system?

Describe the benefits of the iridium spark plug compared to those of the platinum spark plug.

The coil-on-plug ignition system is sometimes referred to as a coil-over-plug ignition system.

Compared to electronic ignition systems with distributors, EI systems without distributors provide:

Ignition dwell time is the length of time the primary circuit is turned on prior to each cylinder firing.

A random misfire code P0300 is usually associated with an ignition system failure.

Technician A says a Hall Effect switch voltage signal goes from 12 V to 0 V when the rotating metal blade enters the switch. Technician B says a Hall Effect switch produces an analog voltage signal. Who is correct?

Changes in engine load also affect when the ignition spark should be delivered.

What is spark plug heat range, and how do the heat ranges of hot plugs and cold plugs differ?

What generic OBD II DTCs will be set if a misfire condition is detected?

The independent ignition system offers greater reliability and a lower incidence of cylinder misfires compared to past ignition systems.

The normal required secondary coil voltage is 10,000 volts. With different system designs, a coil's maximum secondary voltage can exceed 80,000 volts. The difference between and required secondary coil voltage and the maximum secondary coil voltage is referred to as:

When an ignition system misfires or spark plugs fire at the wrong time, which of the following will be adversely affected?

What is spark plug reach, and why can't spark plugs of different reaches be used interchangeably?

In a waste spark system, what happens with the cylinders while a pair of spark plugs is firing?

During the power stroke, when must the air/fuel charge be fully ignited in order for maximum combustion pressure and power production to occur?

What are the advantages of the coil-on-plug and coil-near-plug systems compared to earlier ignition system designs?

Misfires are more likely to occur under lower engine speeds and decreased load conditions.

What is the designated service life of an iridium spark plug?

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