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AURETR131 Diagnose and repair ignition systems
Assessment 1 – Questioning – Written Assessment
Student Name
AMIRTESH SINGH DHANOA
Student ID Number
13730606
Unit Start Date
30/01/2023
Unit End Date
07/02/2023
Assessment
Due Date
07/02/2023
Date Submitted
06/02/2023
This cover sheet is to be completed by the student and assessor and used as a record to determine student competency
in this assessment task
The assessment process and tasks were fully explained.
Yes / No
I am aware of which evidence will be collected and how.
Yes / No
I am aware of my right to appeal an assessment decision.
Yes / No
I am aware that I can locate The RTO
Complaints and Appeals Policy and Procedure
on their website at (Insert Website Link)
Yes / No
I have discussed any additional educational support or reasonable adjustments I require in order to undertake this assessment with the Student Support Services Officer and Trainer / Assessor, (if applicable). e.g. Student Handbook
and Access and Equity Policy (Insert Website Link)
Yes / No
I have access to all required resources?
Yes / No
Cheating & Plagiarism Declaration
Student Declaration:
In accordance with The RTO
Plagiarism Policy, I hereby acknowledge by signing this declaration that I have not cheated or plagiarised any work regarding the assessment tasks undertaken in this unit of competency except where the work has been correctly acknowledged.
NOTE: Student must sign this prior to submitting their assessments to the assessor
Signature
Date: 06/02/2023
Assessment Results
Satisfactory
or
Not Yet
Satisfactory
(Please circle the assessment result for this task)
Feedback to Student - Please provide general feedback on the Student’s performance Document Name:
Assessment – AURETR131
Created Date:
23
rd
Nov 2022
Document No:
Nomi College – AURETR131
Version No:
1.0
Last Modified Date:
© Nomi College | RTO Code: 31518 | CRICOS Code: 03569A
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AURETR131 Diagnose and repair ignition systems
Student Declaration: - I verify that the work completed is my own and that I was adequately informed of the assessment process prior to commencing this assessment task.
Assessor Declaration: - I verify that I have adequately explained and negotiated the assessment tasks with the student prior to commencing assessment.
Student Name: AMIRTESH SINGH DHANOA
Assessor’s Name:
Student Signature
Date
06/02/2023
Assessor Signature
Date
Student Guide for Written Knowledge Assessment
Overview of Assessment This is a written assessment task you will be assess on your knowledge of diagnosing and
repairing ignition systems.
The topics that will be covered in the assessment are:
1.
Prepare to diagnose and repair ignition system
2.
Diagnose ignition system 3.
Repair ignition system 4.
Complete work processes
This assessment will ensure that the elements, performance criteria, performance evidence and knowledge evidence required, and conditions are adhered to demonstrate competency in this unit assessment task.
Read the assessment carefully before commencing.
Your Assessor will use the assessment criteria in this document and will provide feedback / comment.
You MUST
answer all the questions in the assessment tasks in your own words and own handwriting.
This is an “Open Book” assessment, and students can use the resources listed in the “Resources Required” section below.
Task/s to be assessed
To complete this written assessment, you will need to answer the 95
questions comprising
of Multiple Choice, True and False, Fill-in the Gap and Short Answer questions.
Time allowed
On average, the Assessment should take 4 – 6 hours to complete.
Location
This theory assessment will be completed in a classroom under the supervision of a trainer/assessor.
Decision making rules
To receive a ‘satisfactory’ outcome for this assessment, students MUST
successfully answer all questions. If a student achieves less than 100%, they can reattempt the assessment after further study has taken place. Students who cannot achieve a minimum of 100% you will not have satisfactorily completed this assessment
Your assessor will be looking for the following in this assessment task: -
Methods to locate and interpret information required to diagnose and repair ignition systems, including:
Document Name:
Assessment – AURETR131
Created Date:
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rd
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Nomi College – AURETR131
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AURETR131 Diagnose and repair ignition systems
o
Information provided by customers and supervisors
o
Manufacturer specifications and procedures or equivalent documentation
Workplace information required to diagnose and repair ignition systems, including:
o
Establishing serviceability of tools and equipment
o
Documentation procedures
o
Housekeeping procedures, including:
Examination of tools and equipment
Storage of equipment
Identification, tagging and isolation of faulty equipment
Disposal of excess materials
Recycling procedures
Workplace health and safety (WHS) requirements relating to diagnosing and repairing ignition systems, including procedures for:
o
Using specialised tools and equipment, including multimeters, scan tools and oscilloscope
o
Using appropriate personal protective equipment (PPE)
o
Identifying hazards and controlling risks associated with:
Working on high voltage ignition systems
Wearing jewellery while working around high current wiring systems
Environmental requirements relating to diagnosing and repairing ignition systems
Diagnostic testing procedures for ignition systems, including:
o
Using diagnostic flow charts
o
Testing electrical systems, including procedures for:
Accessing electrical terminals and using test probes without damaging connectors, fuse holders or wiring
Checking resistance, current flow and voltage drop of ignition system circuits
Testing ignition coils
o
Using oscilloscopes, including interpreting ignition system primary and secondary waveforms
Repair procedures for ignition systems, including:
o
Removing and replacing faulty or damaged components
Post-repair testing procedures for ignition systems, including static and dynamic performance tests of ignition systems
Operating principles of ignition systems and associated components, including:
o
Generating principles, including faraday’s law and inducing an electromotive force (EMF)
Key features of ignition systems and components, including:
o
Ignition coils, including:
Internal component function and operation: primary windings, iron
core and secondary windings
Electromagnetic induction in the coil
Spark plugs: identification, thread size, reach, heat range, resistance-type plugs, and type and number of earth electrodes
Ignition leads
Firing order
o
Electronic ignition systems, including:
Pulse generator systems: stator and rotor units, ignition control units, current limiting and dwell control
Hall effect systems: hall effect device, and permanent magnet and
signal waveform
Optical ignition systems: light emitting diodes (LEDs), rotating disc
and optical electronic semiconductors
Coil on plug ignition systems
Assessment conditions
Competency is to be assessed in the workplace or a simulated environment that accurately reflects performance in a real workplace setting.
Document Name:
Assessment – AURETR131
Created Date:
23
rd
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Document No:
Nomi College – AURETR131
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AURETR131 Diagnose and repair ignition systems
Assessment MUST
include direct observation of tasks.
Where assessment of competency includes third-party evidence, individuals MUST
provide evidence that links them to the ignition systems that they have worked on, e.g., repair orders.
Assessors MUST
verify performance evidence through questioning on skills and knowledge to ensure correct interpretation and application.
The following resources MUST
be made available:
Automotive repair workplace or simulated workplace
Workplace instructions
Manufacturer ignition system specifications
Two [2] different vehicles, vessels or machinery with ignition system faults
Diagnostic equipment for ignition systems, including:
o
Multimeter
o
Scan tool
o
Oscilloscope
Tools, equipment and materials appropriate for repairing vehicle, vessel or machinery ignition systems.
Assessors of this unit MUST
satisfy the requirements for assessors in applicable vocational education and training legislation, frameworks and/or standards.
Resources required
Learning Resources available to students include:
Automotive Technology (A System Approach) 7
th
Edition – Chapters 2, 5, 6, 7, 24, 25, 26 & 27
Websites –
Trainer Handouts
Results/Re-
assessment
The Assessor will grade the assessment and record the result on the front page of
this document (S) – Satisfactory if all observable behaviours are correct and (NS) not satisfactory if any areas are left incorrect
Feedback will be provided on either result
Where a student receives a ‘NS – Not Satisfactory’ result, the assessor will discuss the area of the non-compliant observable behaviour and an opportunity given for re-assessment. This may be through direct observation or a different method of assessment e.g. verbal/oral questioning, problem solving exercise.
If the outcome is again not satisfactory the student result will be deemed (NYC) not yet competent. Additional feedback will be given, and a time agreed upon for further assessment after additional training and skills practice has taken place, this information will be recorded, dated and signed in the re-assessment area on the last page of this document
Where all the assessment tasks have been graded (S) Satisfactory, the student will be deemed C – Competent for the practical component and the result recorded and signed in the area indicated on the last page of this document
Reasonable Adjustment
If the participant is unable to undertake the written assessment as designed, an interview (verbal questioning) may be used as an alternate approach.
Document Name:
Assessment – AURETR131
Created Date:
23
rd
Nov 2022
Document No:
Nomi College – AURETR131
Version No:
1.0
Last Modified Date:
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AURETR131 Diagnose and repair ignition systems
Assessment 1 – Questioning Written Assessment 1.
What four [4] important items of personal safety equipment (PPE) are worn when diagnosing and repairing ignition systems?
1.
GLOVES
2.
STEEL TOED BOOTS
3.
FACE COVERING
4.
EYE PROTECTION
Fill in the missing words
2.
Place the missing words to complete the statement about the reasons why rings, necklaces, bracelets, and watches should not be worn while working around vehicle ignition or electrical systems. Missing Words: metal, short, bare, body electricity.
The __
_METAL
____________ in most jewellery conducts
___
ELECTRICITY____________ very well and can easily cause a ____
SHORT
___________, through your ___BODY____________ if this jewellery touches
a ___BARE
____________ wire.
True or False question. Select the correct answer
3.
You should NEVER connect a ‘self-powered’ test-lights to a circuit that is powered.
☒
True
or
☐
False
True or False question. Select the correct answer
4.
The leads of an ammeter should NEVER be placed the across the battery or a load. ☒
True
or
☐
False
5.
To prevent personal injury or damage to the vehicle, you should always take the necessary precautions before working on or around a vehicle’s electrical system. You should disconnect the battery before disconnecting any electrical wire or component. Why?
IT PREVENTS ELECTRICAL HAZARD, AVOID SHORT CIRCUIT, PREVENT DAMAGE TO COMPONENTS, REDUCE THE CHANCE OF FIRE HAZARD
Document Name:
Assessment – AURETR131
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AURETR131 Diagnose and repair ignition systems
Multiple Choice question. Selected the correct answer.
6.
The ignition system produces exceedingly high voltages, and these can be________?
A.
Safe.
B.
Dangerous
.
C.
Nothing, as I have safety shoes on.
D.
All these answers are correct.
True or False question. Select the correct answer
7.
Incorrect ignition timing can increase the production of NO
x
which is a cause of photochemical smog. ☐
True
or
☐
False
Multiple Choice question. Selected the correct answer.
8.
A poor ignition system can cause ________ emissions, which are caused largely by unburned fuel from the combustion chamber?
A.
Carbon monoxide (CO).
B.
Hydrocarbons (HC)
.
C.
Nitrogen oxides (NO
x
).
D.
Carbon dioxide (CO
2
).
Multiple Choice question. Selected the correct answer.
9.
When something prevents complete combustion, the result is a misfire or incomplete combustion. Misfires can
cause ________?
A.
Lack of power.
B.
Poor fuel (gas) mileage.
C.
Excessive exhaust emissions.
D.
A rough running engine.
E.
All these answers are correct.
True or False question. Select the correct answer
10.
A late model ignition system can supply 3000 to 6000 volts of electricity. ☐
True
or
☐
False
Document Name:
Assessment – AURETR131
Created Date:
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rd
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AURETR131 Diagnose and repair ignition systems
Multiple Choice question. Selected the correct answer.
11.
The ignition system in today’s vehicles is an integral part of the electronic engine control system. The engine control module (ECM), or powertrain control module (PCM), controls all functions of the ignition system and constantly corrects the spark timing?
A.
The desired ignition timing is calculated by the PCM according to inputs from a variety of sensors.
B.
These inputs allow the PCM to know the current operating conditions.
C.
The PCM matches those conditions to its programming and controls ignition timing accordingly.
D.
All these answers are correct.
12.
Regardless of the type, all modern ignition systems are designed to perform the same functions. Explain what that is?
IT INITIATES COMBUSTION, C0NTROL TIMING, AMPLIFY VOLTAGE, DISTRIBUTION OF COIL-ON-PLUG AND
SAFETY FEATURES
Multiple Choice question. Selected the correct answer.
13.
Although the exact proper time varies with engine design, ignition must occur ________.
A.
Just before the end of the compression stroke.
B.
Just after the beginning of the power stroke.
C.
Just before the beginning of the exhaust stroke.
D.
Just at the end of the intake stroke.
14.
What is the function of the ignition coil(s)?
ITS FUNCTION IS TO TRANSFORM VOLTAGE, AMPLIFY VOLTAGE, DELIVER SPARK, AND CONTROL TIMING
15.
Explain what the spark plug does in the ignition system?
IGNITION , HEAT DISSIPATION, INSULATION, ELECTRODE DESIGN, HEAT RANGE, SENSING AND DIAGNPSTIC FUNCTIONS
Document Name:
Assessment – AURETR131
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AURETR131 Diagnose and repair ignition systems
16.
Spark plug cables, or ignition cables, make up the secondary wiring, but what is their job in the ignition system?
CONDUCT HIGH VOLTAGE PULSES, INSULATION AND PROTECTION, ROUTING AND ORGANISATION AND RESISTANCE MANAGEMENT
Multiple Choice question. Selected the correct answer.
17.
In a distributor ignition system, the high voltage from the secondary winding is delivered to the distributor by an ignition cable or through an internal connection in the distributor cap. The distributor then distributes ________.
A.
The low voltage to the group of spark plugs through a set of ignition cables.
B.
The high voltage to the individual spark plugs through a set of ignition cables.
C.
The high voltage directly into the cylinders through a set of ignition cables.
D.
All these answers are correct.
True or False question. Select the correct answer
18.
In computer-controlled ignitions, the computer receives input from numerous sensors. Based on this data, the computer determines the optimum firing time and signals an ignition module to activate the secondary circuit at the precise time needed. ☐
True
or
☐
False
19.
Describe the principle of “Faraday’s Law”?
The principle describes how a changing magnetic field induces an electromotive force (EMF) or voltage in a nearby conductor. This phenomenon is the basis for the operation of many electrical devices, including generators, transformers, and electric motors.
Multiple Choice question. Selected the correct answer.
20.
What happens when the low-voltage current flow in the coil primary windings is interrupted by the switching device?
A.
The magnetic field around the primary winding collapse.
B.
The movement of the magnetic field across the winding induces a high voltage in the secondary windings.
C.
Both “The magnetic field around the primary winding collapse” and “The movement of the magnetic field across the winding induces a high voltage in the secondary windings”. Document Name:
Assessment – AURETR131
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rd
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AURETR131 Diagnose and repair ignition systems
D.
Neither “The magnetic field around the primary winding collapse” or “The movement of the magnetic field across the winding induces a high voltage in the secondary windings”.
Document Name:
Assessment – AURETR131
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rd
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AURETR131 Diagnose and repair ignition systems
Multiple Choice question. Selected the correct answer.
21.
The typical amount of secondary coil voltage required to jump the spark plug gap is ________ volts.
A.
500.
B.
1,000.
C.
10,000. D.
50,000.
Multiple Choice question. Selected the correct answer.
22.
Which of the following components is part of both the primary and secondary ignition circuits?
A.
Spark plugs.
B.
Ignition coil.
C.
Battery. D.
Ignition switch.
Multiple Choice question. Selected the correct answer.
23.
The ignition coil is essentially a pulse ________.
A.
Transformer.
B.
Plug.
C.
Resistor. D.
Switch.
24.
An ignition coil uses these principles and has two coils of wire wrapped around an iron or steel core. An iron or steel core is used because?
IT IS USED BECAUSE OF MAGNETIC FLUX ENHANCEMENT, INDUCTION OF SECONDARY VOLTAGE, REDUCTION OF LOSSES AND STRUCTURAL SUPPORT
Multiple Choice question. Selected the correct answer.
25.
The first, or primary coil is normally composed of 100 to 200 turns of 20-gauge wire.
A.
This coil of wire conducts battery voltage and current.
B.
When a current is passing through the primary coil, it magnetizes the iron core.
C.
The strength of the magnet depends directly on the number of wire loops and the amount of current flowing through those loops. Document Name:
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AURETR131 Diagnose and repair ignition systems
D.
All these answers are correct.
Multiple Choice question. Selected the correct answer.
26.
The secondary coil of wires may consist of ________, or more, turns of very fine copper wire.
A.
100 to 200.
B.
1,000 to 2,000.
C.
15,000 to 25,000. D.
150,000 to 250,000.
True or False question. Select the correct answer
27.
The spark plugs are part of the primary ignition circuit.
☐
True
or
☐
False
True or False question. Select the correct answer
28.
The battery is part of the secondary ignition circuit.
☐
True
or
☐
False
Multiple Choice question. Selected the correct answer.
29.
In the coil, when current flowing through a winding is at its maximum and the strength of its magnetic field is also at its maximum, the winding is said to be ________?
A.
Full.
B.
Saturated
.
C.
Flooded. D.
Soaked.
Multiple Choice question. Selected the correct answer.
30.
The period of time during which there is primary current flow through the ignition coil is called ________.
A.
Dwell.
B.
Voltage.
C.
Reserve. D.
All these answers are correct.
Document Name:
Assessment – AURETR131
Created Date:
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rd
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AURETR131 Diagnose and repair ignition systems
31.
What happens when the low-voltage current flow in the coil primary winding is interrupted by the switching device?
When the low-voltage current flow in the coil primary winding is interrupted by the switching device, several key events occur within the ignition coil, leading to the generation of a high-voltage spark at the spark plugs.
True or False question. Select the correct answer
32.
A spark plug’s ceramic core or insulator acts as a heat conductor.
☒
True
or
☐
False
Multiple Choice question. Selected the correct answer.
33.
Reach, heat range, and air gap are all characteristics that affect the performance of which ignition system component?
A.
Ignition coils.
B.
Ignition cables.
C.
Spark plugs. D.
Breaker points.
Multiple Choice question. Selected the correct answer.
34.
Resistor-type spark plugs are being discussed by two Technicians.
A.
The first technician says the resistor increases the plug firing voltage.
B.
The second technician says the resistor helps reduce radio frequency interference (RFI), which can interfere with, or damage, radios, computers, and other electronic accessories, such as GPS systems.
C.
Both Technicians are correct. D.
Neither Technicians is correct.
Multiple Choice question. Selected the correct answer.
35.
Which of the following is NOT a spark plug thread diameter?
A.
12mm.
B.
14mm.
C.
18mm. D.
9/16in.
Document Name:
Assessment – AURETR131
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rd
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AURETR131 Diagnose and repair ignition systems
Document Name:
Assessment – AURETR131
Created Date:
23
rd
Nov 2022
Document No:
Nomi College – AURETR131
Version No:
1.0
Last Modified Date:
© Nomi College | RTO Code: 31518 | CRICOS Code: 03569A
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AURETR131 Diagnose and repair ignition systems
Multiple Choice question. Selected the correct answer.
36.
All the following elements except ________ are used in the spark plug centre electrode to increase plug life.
A.
Platinum.
B.
Iridium.
C.
Yttrium. D.
Cesium.
Multiple Choice question. Selected the correct answer.
37.
The heat range of a spark plug is indicated by ________ on the spark plug.
A.
The colour of the insulator ribs.
B.
The number of insulator ribs.
C.
A code within the plug number printed. D.
All these answers are correct.
38.
By what factor is the heat range of a spark plug determined?
The heat range of a spark plug is determined by the length of the insulator before it contacts the shell. In a cold-
range spark
plug, there is a short distance for the heat to travel up the insulator to the shell. The short heat path means the electrode and insulator will maintain little heat between firings
39.
What is spark plug reach?
Reach is crucial because the plug's air gap must be properly placed in the combustion chamber to produce the correct amount of heat. When a plug's reach is too short, its electrodes are in a pocket and the arc is not able to adequately ignite the mixture. If the reach is too long, the exposed plug threads can get so hot they will ignite the air-fuel mixture at the wrong time and cause preignition
.
40.
Why is the correct spark plug heat range important?
Spark plugs should operate between average temperatures of 400°C and 800°C.
This si the self- cleaning temperature range and is optimal at 600°C. fI the plug operates at temperatures that are too cold, ti will allow carbon and soot to form, which will eventually cause plug failure. However, if the plug operates at temperatures that are too hot, ti will tend ot destroy itself by burning, melting the electrodes and blistering the insulator. High plug temperatures will also cause pre-ignition.
Document Name:
Assessment – AURETR131
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rd
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AURETR131 Diagnose and repair ignition systems
True or False question. Select the correct answer
41.
Electrode designs spark plugs are available with many different shapes and numbers of electrodes.
☒
True
or
☐
False
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AURETR131 Diagnose and repair ignition systems
42.
Name the nine [9] parts of the spark plug below.
1
STEEL TERMINAL
2
CERAMIC INSULATOR
3
STEEL SHELL
4
SEAL
5
CENTER ELECTRODES
6
EARTH ELECTRODE
7
THREADS
8
SEALS
9
RESISTOR
Multiple Choice question. Selected the correct answer.
43.
On the spark plug, there is ________ ground or side electrodes fitted.
A.
One [1].
B.
Two [2].
C.
Three [3]. D.
Four [4]
E.
All these answers are correct.
Multiple Choice question. Selected the correct answer.
44.
Modern ignition cables contain carbon fibre cores that act as a(n) ________ in the secondary circuit to cut down on radio and television interference and reduce spark plug wear.
A.
Insulator.
B.
Resistor.
C.
Semiconductor.
D.
Heat shield.
Document Name:
Assessment – AURETR131
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rd
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AURETR131 Diagnose and repair ignition systems
Multiple Choice question. Selected the correct answer.
45.
Spark plug cables, or ignition cables, make up the secondary wiring. These cables carry the ________ from the distributor or the multiple coils to the spark plugs. A.
High voltage
.
B.
Low voltage.
C.
Heat.
D.
Fuel.
46.
What is an engine’s firing order?
AN ENGINE’S FIRING ORXER IS THE SPECIFIC SEQUENCE IN WHICH EACH CYLINDER RECEIVES SPARK AND IGNITES THE AIR-FUEL MIXTURE DURING THE COMBUSTION CYCLE
IT IS A CRITICAL ASPECT OF ENGINE DESIGN AND IS DETERMINED BY THE ARRANGEMENT OF THE ENGINE’S CYLINDERS
THE FIRING ORDER IS CRUCIAL FOR MAINTAINING SMOOTH ENGINE OPERATION, OPTIMALPOWER DELIVERY, AND BALANCING THE LOAD ON THE CRANKSHAFT
True or False question. Select the correct answer
47.
Magnetic pulse generators produce a weak DC voltage when the teeth of the trigger wheel rotate past the pickup coil.
☐
True
or
☐
False
Multiple Choice question. Selected the correct answer.
48.
The magnetic field surrounding the pickup coil in a magnetic pulse generator moves when the ________.
A.
Reluctor tooth approaches the ignition coil.
B.
Reluctor tooth begins to move away from the pickup coil
.
C.
Reluctor tooth begins to move away from the ignition coil.
D.
The pickup coil is midway between two reluctor teeth.
Multiple Choice question. Selected the correct answer.
49.
Basically, a magnetic pulse generator or inductance sensor consists of two parts: a ________ and a pickup coil.
A.
Trigger wheel.
B.
Points.
C.
Ignition coil.
D.
All these answers are correct.
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AURETR131 Diagnose and repair ignition systems
50.
The ignition control unit, also referred to as an ignition module, can be mounted either inside or on the outside
of the distributor. It consists of transistors, diodes and resistors. Explain how the coil-driving transistors, known
as power transistors, are used as a switching device for the ignition-coil primary circuit. The magnetic pulses developed when the distributor signal rotor (reluctor) passes the pick-up coil (stator) generate an AC voltage that is used as trigger signals to the ignition control unit. The ignition module opens and closes the power transistor
in the primary circuit. The pulse generator and ignition control unit work together to perform the same function as a set of breaker points.
51.
Many modern electronic ignitions feature current limiting. What does current limiting do in the electronic ignition system?
CURRENT LIMITING IN ELECTRONIC IGNITION SYSTEMS REGULATES THE AMOUNT OF CURRENT FLOWING THE IGNITION COIL’S PRIMARY CIRCUIT
IT PREVENTS EXCESSIVE CURRENT, WHICH COULD LEAD TO OVERHEATING AND DAMAGE BY CONTROLLING THE DURATION OF THE COILS SATURATION
THIS FEATURE ENHANCES THE DURABILITY OF THE IGNITION COMPONENTS AND ENSURES CONSISTENT IGNITION PERFORMANCE UNDER VARIOUS OPERARTING CONDITIONS
52.
Describe the term “dwell time.”
THE PERIOD WHEN THE IGNITION SYSTEM APPLIES AN ELECTRIC CURRENT TO THE IGNITION COIL’S PRIMARY WINDING IS OFTEN REFERRED AS DWELL TIME
Multiple Choice question. Selected the correct answer.
53.
A hall effect switch generates a ________ wave voltage.
A.
Alternating Current.
B.
Square
.
C.
Direct Current.
D.
All these answers are correct.
Multiple Choice question. Selected the correct answer.
54.
A Hall-effect sensor has these three wires connecting it to the PCM: a 5- to 12-volt reference voltage, a ground, and a(n) ________.
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A.
Ground voltage.
B.
12V Power voltage.
C.
Signal voltage.
D.
All these answers are correct.
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AURETR131 Diagnose and repair ignition systems
Multiple Choice question. Selected the correct answer.
55.
The signal from a Hall-effect CKP is also used to match ________ timing with the engine’s firing order on engines equipped with sequential fuel injection.
A.
Fuel injector.
B.
Fuel pump.
C.
Fuel pressure regulator.
D.
All these answers are correct.
True or False question. Select the correct answer
56.
Some early Hall-effect distributor ignition systems relied on photoelectric sensors to monitor crankshaft position.
☐
True
or
☐
False
Multiple Choice question. Selected the correct answer.
57.
Some engines use a ________ sensor designed with an LED, a phototransistor, and a slotted disc to identify crankshaft position.
A.
Hall-effect.
B.
Photoelectric (optical)
.
C.
Magnetic pulse generator.
D.
All these answers are correct.
Multiple Choice question. Selected the correct answer.
58.
Some early distributor ignition systems relied on photoelectric sensors to monitor ________ position.
A.
Vehicle.
B.
Throttle.
C.
Crankshaft.
D.
All these answers are correct.
Multiple Choice question. Selected the correct answer.
59.
The CKP in the photoelectric sensors uses ________ slots in the interrupter, one for each degree of crankshaft rotation and the CMP uses the number of slots equal to the number of cylinders of the engine.
A.
180.
B.
360
.
C.
720.
D.
1440.
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AURETR131 Diagnose and repair ignition systems
60.
Describe a coil-on-plug ignition system.
A coil-on-plug (COP) ignition system is a type of ignition system commonly found in modern internal combustion engines, particularly gasoline-powered vehicles. It is designed to improve ignition efficiency and reliability by placing an ignition coil directly on top of each spark plug, eliminating the need for spark plug wires
Multiple Choice question. Selected the correct answer.
61.
One of the advantages of a coil-on-plug type ignition system is that it eliminates the need for ________.
A.
Crankshaft position sensor (CKP).
B.
Camshaft position sensor (CMP).
C.
Knock sensor (KS).
D.
Spark plug wires/cables (Ignition leads).
True or False question. Select the correct answer
62.
When diagnosing ignition system faults, symptom-based diagnostic charts focus on a definition of the problem
and offer a list of possible causes of the problem.
☒
True
or
☐
False
Multiple Choice question. Selected the correct answer.
63.
You are diagnosing a 2007 Toyota FJ Cruiser with DTC P0300 Radom/Multiple Cylinder Misfire Detected. Referring to the 2007 Toyota FJ Cruiser “Engine Control” Workshop Manual, what is the first step in the diagnostic flow charts you need to do?
A.
Check Misfire count.
B.
Check spark plugs.
C.
Read value using the intelligent tester (Misfire RPM and Misfire Load)
D.
Check any other DTCs output (In addition to Misfire DTCs).
Multiple Choice question. Selected the correct answer.
64.
Taking ignition system electrical measurements from the external wire terminal ends on the outside of a plugged-in electrical connector without damaging connectors, fuse holders or wiring is called ________.
A.
Front-probing.
B.
Backprobing.
C.
Side-probing.
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D.
All these answers are correct.
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AURETR131 Diagnose and repair ignition systems
Fill in the missing words
65.
Place the missing words to complete the following statement about diagnosing ignition switch voltage concerns using the following words.
Missing Words: DMM, ignition, measure, module, negative, position, testlight
You can check for voltage using either a 12-volt testlight or a DMM. To use a __
TESTLIGHT
_____________, turn the ignition key off and disconnect the wire connector at the __
MODULE_____________. Turn the key to the run position and probe the power wire connection to check for voltage. Also check for voltage at the battery terminal of the __IGNITION_____________ coil using the testlight.
Next, turn the key to the start ________POSITION_______ and check for voltage at the module and the battery terminal of the ignition coil. If voltage is present, the switch and its circuit are okay.
To make the same test using a __DMM_____________, turn the ignition switch to the off position and backprobe, with the meter’s positive lead, the power feed wire at the module. Connect the meter’s ___NEGATIVE
____________ to a good ground. Turn the ignition to the run or start position as needed and ___MEASURE____________ the voltage. The reading should be at least 90 percent of battery voltage.
66.
The crankshaft and camshaft sensors can also be checked with an ohmmeter. Explain how this is done, and what must be done if the crankshaft and camshaft sensors are found to be faulty?
MEASURE THE RESISTANCE ACROSS THE SENSOR TERMINALS
REFER TO MANUFACTURERS SPECIFICATION FOR CORRECT RESISTANCE VALUE
IF SENSORS ARE FAULTY, REPLACE THEM AS THEY PLAY A CRUCIAL ROLE IN PROVIDING ACCURATE ENGINE POSITION INFORMATION FOR PROPER IGNITION TIMING AND FUEL INJECTION
Multiple Choice question. Selected the correct answer.
67.
During a coil output test, the firing line shown on the oscilloscope pattern should exceed ________ volts.
A.
12.
B.
350.
C.
1,200.
D.
35,000
.
Multiple Choice question. Selected the correct answer.
68.
The firing lines on an oscilloscope are all abnormally low. The problem could be?
A.
A faulty coil.
B.
A lean air/fuel mixture.
C.
A faulty battery.
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D.
All these answers are correct.
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AURETR131 Diagnose and repair ignition systems
Multiple Choice question. Selected the correct answer.
69.
An ohmmeter connected to the leads of a pickup coil in a Distributor Ignition (DI) system reads 14-ohms of resistance. The reading indicates that the pickup coil ________.
A.
Is satisfactory.
B.
Is shorted.
C.
Is open.
D.
Has high resistance.
Multiple Choice question. Selected the correct answer.
70.
A voltage drop test is used to determine the cause of running problems. When conducting a voltage drop test, you are checking for unwanted ________.
A.
Voltage.
B.
Amps.
C.
Resistance.
D.
Temperature.
Multiple Choice question. Selected the correct answer.
71.
A technician is testing the ignition coil. Which test should he use?
A.
Use an ohmmeter to measure primary and secondary resistance.
B.
Use an oscilloscope and a test spark plug to measure maximum coil output voltage.
C.
Both “
Use an ohmmeter to measure primary and secondary resistance” and “Use an oscilloscope and a test spark plug to measure maximum coil output voltage”.
D.
Neither “Use an ohmmeter to measure primary and secondary resistance” and “Use an oscilloscope and a
test spark plug to measure maximum coil output voltage”.
True or False question. Select the correct answer
72.
While testing a coil in an Electronic Ignition (EI) system, A Technician says an infinite reading means that the winding has zero resistance and is shorted.
☐
True
or
☐
False
True or False question. Select the correct answer
73.
A Technician says the secondary winding in a waste spark (doubled-ended) coil should be checked by connecting the meter across the two secondary terminals.
☒
True
or
☐
False
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AURETR131 Diagnose and repair ignition systems
Multiple Choice question. Selected the correct answer.
74.
The firing lines on an oscilloscope are all abnormally low. What could the fault be?
A.
The problem could be a faulty coil.
B.
The problem could be a lean air/fuel mixture.
C.
Both “The problem could be a faulty coil” and “Us The problem could be a lean air/fuel mixture”.
D.
Neither “The problem could be a faulty coil” and “Us The problem could be a lean air/fuel mixture”.
75.
Interpret the following primary oscilloscope waveforms below.
1
FIRING ACTION
2
INTERMEDIATE SECTION
3
DWELL SECTION
76.
Interpret the following secondary oscilloscope waveforms below.
1
FIRING SECTION
2
INTERMEDIATE SECTION
3
DWELL SECTION
4
TRANSISTOR OFF
5
TRANSISTOR ON
6
SPARK LINE
7
FIRING LINE
Multiple Choice question. Selected the correct answer.
77.
On an oscilloscope, which section ends with the primary coil current off signal?
A.
Intermediate.
B.
Dwell.
C.
Firing.
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AURETR131 Diagnose and repair ignition systems
D.
Both “Intermediate” and “ Dwell”.
Multiple Choice question. Selected the correct answer.
78.
The height of the ________ line in a secondary oscilloscope pattern represents the amount of voltage needed
to initiate a spark across the spark plug gap.
A.
Intermediate.
B.
Dwell.
C.
Firing
.
D.
Both “Intermediate” and “ Dwell”.
79.
Name the three [3] types of secondary circuit trace patterns available on an oscilloscope.
1
CONSTANT K OR MAGNETO RESISTIVE
2
WASTE SPARK ORVSISTRIBUTORLESS IGNITION
3
COP OR COIL-ON-PLUG
80.
Explain the correct procedure to remove and install spark plug wires/cables (ignition leads) from a spark plug.
REMOVAL- GRASP THE BOOT FIRMLY AND TWIST IT BEFOREW PULLING IT STRAIGHT OFF THE SPARK PLUG. AVOID PULLING ON THE WIRE ITSELF TO PREVENT DAMAGE.
INSTALLATION- ENSURETHE SPARK PLUG WIRE IS SECURELY ATTACHED TO THE DISTRIBUTOR OR IGNITION COIL. FOR THE SPARK PLUG END, APPLY A SMALL AMOUNT OF DIELECTRIC GREASE TO THE INSIDE OF THE BOOT BEFORE PRESSING IT INTO THE SPARK PLUG. MAKE SURE IT CLICKS INTO PLACE.
ROUTING-ROUTE THE SPARK PLUG WIRES AWAY FROM HOT ENGINE COMPONENTS AND MOVING PARTS SECURING THEM IN THEIR DESIGNATED HOLDES OR CLIPS.
SEQUENCE- WHEN DEALING WITH A DISTRIBUTOR FOLLOW THE ENGINES FIRING ORDER TO CORRECTLY CONNECT EACH WIRE TO THE CORRESPONDING SPARK PLUG AND DISTRIBUTOR TERMINAL
Fill in the missing words
81.
Place the missing words to complete the following statement about installing spark plugs using the following words.
Missing Words: engine, gap, grease, hand, plugs, spark, threads, wrench
STEP 1 Wipe dirt and __GREASE
_____________ from the plug seats with a clean cloth.
STEP 2 Verify that the replacement _SPARK
______________ plugs are the correct ones for the engine by matching the part number to its application. Never assume that the plugs that were removed from the ___ENGINE____________ are the correct type.
STEP 3 Adjust the air __
_GAP
____________, as needed.
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AURETR131 Diagnose and repair ignition systems
STEP 4 Check the service information to see if anti-seize compound should be applied to the plug’s _
_THRERADS
_____________.
STEP 5 Install the plugs and tighten them with your _
_HAND
_____________. If the plugs cannot be installed easily by hand, the threads in the cylinder head may need to be cleaned with a thread-chasing tap. Be especially careful not to cross-thread the _PLUGS
______________ when working with aluminium heads.
STEP 6 Tighten the plugs with a torque ___WRENCH____________, following the vehicle manufacturer’s specifications Document Name:
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AURETR131 Diagnose and repair ignition systems
82.
After completing repairs on a vehicle ignition system, you should check for what?
SPARK- CHECK EACH SPARK IS PRODUCING STRONG AND CONSISTENT SPARK.
TIMING- CHECK IF THE IGNITION TIMING IS SET PERFECTLY ACCORDINGLY MANUFACTERES SPECIFICATION
SYSTEM INTEGRITY- CHECK FOR ANY LOOSE CONNRCTION, WIRES OR COMPONENTS.ENSURE EVERYTHING IS WORKING PERFECTLY TO PREVENT ANY FUTURE ISSUE.
83.
During a road test, what concerns are you looking for after repairing the ignition system not to produce?
SMOOTH OPERATION- ENSURE ENGINE RUNS SMOOTH WITHOUT ANY HESITATION, MISFIRES OR ROUGH IDLING.
POWER DELIVERY- ASSESS THE ENGINES POWER DELIVERY AND RESPONSIVENESS.
STABILITY- CHECK FOR OVERALL STABILITY IN ACCELERATION , DECELLERATIONAND CRUISING SPEEDS.
True or False question. Select the correct answer
84.
An automotive technician must adhere to workshop safety guidelines and procedures when using all tools and
equipment.
☒
True
or
☐
False
True or False question. Select the correct answer
85.
An automotive technician is required to document the work that was performed on a vehicle. Writing or typing in the description of the steps performed during the diagnosis of the vehicle should be worded as if the technician is talking to the customer.
☒
True
or
☐
False
True or False question. Select the correct answer
86.
Inspect your tools for cracks, broken parts, or other dangerous conditions before you use them. Never use broken or damaged tools.
☒
True
or
☐
False
True or False question. Select the correct answer
87.
For best results and long tool life, each tool used must be cleaned and checked before placing it back into the toolbox.
☒
True
or
☐
False
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Multiple Choice question. Select the correct answer.
88.
Lockout/tagout practices and procedures are intended to reduce the risk of automotive technicians’ inadvertently using tools, equipment or materials that have been determined to?
A.
Be unsafe or potentially unsafe.
B.
That are in the process of being serviced.
C.
Both “
Be unsafe or potentially unsafe” and “That are in the process of being serviced”
.
D.
Neither “Be unsafe or potentially unsafe” and “That are in the process of being serviced”.
True or False question. Select the correct answer
89.
Disposing of excess ignition materials like old spark plug, distributor cap can be disposed into their correct recycling bin.
☐
True
or
☐
False
True or False question. Select the correct answer
90.
Second-hand ignition system components, ignition coils, spark plugs, ignition leads and wiring harness etc that are in good condition can be reused on the other vehicles of the same make and model?
☐
True
or
☐
False
Multiple Choice question. Selected the correct answer.
91.
Which source of information will give you the most detail about diagnosing faults in the vehicle ignition systems on the vehicle you are working on?
A.
Workshop manual.
B.
Owner’s manual.
C.
Google.
D.
Textbooks.
True or False question. Select the correct answer
92.
An automotive technician must adhere to workshop safety guidelines and procedures and follow the manufactures procedures in the workshop manual when diagnosing faults in ignition systems.
☒
True
or
☐
False
93.
You are repairing an ignition system fault on a 2007 Toyota FJ Cruiser and replacing the ignition coils. Referring to the 2007 Toyota FJ Cruiser Ignition Workshop Manual, locate and interpret the ignition coils mounting bolts torque specification:
Ignition Coils Mounting Bolts Torque: 10NM
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AURETR131 Diagnose and repair ignition systems
94.
You are diagnosing an ignition system fault on a 2007 Toyota FJ Cruiser, and you want to see the spark plugs
you removed are the ones recommended by Toyota. Referring to the 2007 Toyota FJ Cruiser Ignition Workshop Manual, locate and interpret the two [2] recommended spark plugs and electrode gap for this vehicle:
Recommended Spark Plugs #1: DENSO K20HR-U11
Recommended Electrode Gap #1: 1.1MM(0.043in)
Recommended Spark Plugs #2: NGK LFR6C11
Recommended Electrode Gap #2:
1.1MM(0.043in)
Multiple Choice question. Select the correct answer.
95.
A work order is selected or assigned to a service technician who then performs the listed tasks. The work order should be written so that the technician knows exactly what needs to be done. However, if there is any doubt, the technician should clarify the needed task with the ________ or the person who spoke to the customer.
A.
Service advisor
.
B.
Service technician.
C.
Spare parts manager.
D.
New car sales manager.
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