aureth129

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Skills Institute Australia - Adelaide *

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Electrical Engineering

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Jan 9, 2024

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AUSTRALIA INSTITUTE v DREAM | SEEK | ACHIEVE www.skillsaustralia AURETR129 DIAGNOSE AND REPAIR CHARGING SYSTEMS ASSESSMENT 2 - SHORT ANSWER QUESTIONS FEEDBACK COVER SHEET STUDENT NAME STUDENT ID ASSESSOR NAME | Ken Hilson BENCHMARK REQUIREMENTS MET EVIDENCE COLLECTED 15t Attempt | 2"¢ Attempt | 3" Attempt Answers to Knowledge Questions 0 0 0 [ ] [1Satisfactory | [1Satisfactory | [1Satisfactory OUTCOME CONot [OINot CONot Satisfactory Satisfactory Satisfactory DATE / 120 / 120 /| 120 ASSESSOR INITIAL ‘FEEDBACK TO STUDENT ] r ASSESSOR FI’;}'IE_ of EIGNATURE OUTCOME | Document Name: AURETR129 AT2 Knowledge Short Answer Question | RTO Code: 52010 | CRICOS Code: 03548F [Version: 1.2 [Approved on: 18 Jul 2022 | Review Date: 18 Jul 2027 | Page 1 of 12
D AUSTRALIA A% INSTITUTE DREAM | SEEK | ACHIEVE www.skillsaustralia Student Guide for Written Knowledge Assessment Overview of This is a written assessment task you will be assessed on your knowledge of Assessment diagnosing and repairing charging systems. The topics that will be covered in the assessment are: 1. Prepare to diagnose and repair charging system 2. Diagnose charging system 3. Repair charging 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. e Read the assessment carefully before commencing. e Your Assessor will use the assessment criteria in this document and will provide feedback / comment. e You MUST answer all the questions in the assessment tasks in your own words. o This is an “Open Book” assessment, and students can use the resources listed in the “Resources Required” section below. Task/s to be To complete the written assessments, you will need to answer 77 questions in total. assessed Assessment 1 Quiz Questions will be completed using your Canvas account. The assessment has 57 questions comprising of Multiple Choice, True and False and Fill-in the Gap questions Assessment 2 Short Answer Questions will be completed using this document and has 20 Short Answer questions. Time allowed On average, Assessment 1 Quiz Questions and Assessment 2 Short Answer Questions should take 4 6 hours to complete Location This theory assessment will be completed in a classroom under the supervision of a trainer/assessor. | Document Name: AURETR129 AT2 Knowledge Short Answer Question | RTO Code: 52010 | CRICOS Code: 03548F | [Version: 1.2 | Approved on: 18 Jul 2022 | Review Date: 18 Jul 2027 | Page 2 of 12
D AUSTRALIA A% INSTITUTE DREAM | SEEK | ACHIEVE www.skillsaustralia 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: - e Methods to locate and interpret information required to diagnose and repair charging systems, including: o Information provided by customers and supervisors o Manufacturer specifications and procedures or equivalent documentation e Workplace procedures required to diagnose and repair charging 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 e Workplace health and safety (WHS) requirements relating to diagnosing and repairing charging systems, including procedures for: o Using specialised tools and equipment 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 e Operating principles of charging systems and associated components, including: o Charging batteries with direct current o Vehicle system power and electrical current requirements o Generating principles, including faraday’s law and inducing an electromotive force (EMF) o Producing direct current (DC) EMF o Producing alternating current (AC) EMF o Changing AC to DC, including half-wave and full-wave rectification e Purpose and operation of charging systems and components, including: o Altemators, including: - Internal component function and operation - External components and drive function and operation - Star-connected and delta-connected stator windings - Regulation of output voltage, including zener diodes and exciter diodes o Battery management systems o Solar ¢ Diagnostic testing procedures for charging systems, including: o Accessing and interpreting scan tool system data, including: -~ Diagnostic trouble codes (DTCs) - Live data - Waveforms o Using diagnostic flow charts o Testing electrical systems, including procedures for: | Document Name: AURETR129 AT2 Knowledge Short Answer Question | RTO Code: 52010 ] CRICOS Code: 03548F [Version: 1.2 | Approved on: 18 Jul 2022 | Review Date: 18 Jul 2027 | Page 3 of 12
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D AUSTRALIA A% INSTITUTE DREAM | SEEK | ACHIEVE www.skillsaustralia - Accessing electrical terminals and using test probes W|thout damaging connectors, fuse holders or wiring - Load testing charging systems - Resistance, current flow and voltage drop checks of charging system circuits e Repair procedures for charging systems, including: o Tightening connections o Replacing faulty or damaged cable connections o Removing and replacing faulty or damaged components e Post-repair testing procedures for charging systems, including: o DTC checking procedures o Checking for electrical connector mating o Static and dynamic performance tests of charging systems Assessment Competency is to be assessed in the workplace or a simulated environment that conditions accurately reflects performance in a real workplace setting. Assessment MUST include direct observation of tasks. Where assessment of competency includes third-party evidence, individuals MUST provide evidence that links them to the charging 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 specifications for vehicle, vessel or machinery charging systems Two [2] different vehicles, vessels or machinery with charging system faults Diagnostic equipment for vehicle, vessel or machinery charging systems, including: o Multimeter o Scan tool e Tools, equipment and materials appropriate for repairing vehicle, vessel or machinery charging systems Assessors of this unit MUST satisfy the requirements for assessors in applicable vocational education and training legislation, frameworks and/or standards Resources Learning Resources available to students include: ired require e Automotive Technology (A System Approach) 7th Edition Chapters 2, 5, 6, 7,16 & 19 e Websites e Trainer Handouts | Document Name: AURETR129 AT2 Knowledge Short Answer Question | RTO Code: 52010 | CRICOS Code: 03548F | [Version: 1.2 [Approved on: 18 Jul 2022 [ Review Date: 18 Jul 2027 | Page 4 of 12 |
D AUSTRALIA A% INSTITUTE DREAM | SEEK | ACHIEVE www.skillsaustralia Results/Re- e The Assessor will grade the assessment and record the result on the front assessment page of this document. (S) Satisfactory if all questions are correct and (NS) Not Satisfactory if any questions are left incorrect. e Feedback will be provided on either result. e Where a student receives a ‘NS Not Satisfactory’ result, the assessor will discuss the questions that are incorrect, and an opportunity given for re- assessment. e Students are provided with 3 attempts for the knowledge questions. Reasonable If the participant is unable to undertake the written assessment as designed, an Adjustment interview (verbal questioning) may be used as an alternate approach. | Document Name: AURETR129 AT2 Knowledge Short Answer Question | RTO Code: 52010 | CRICOS Code: 03548F | [Version: 1.2 | Approved on: 18 Jul 2022 | Review Date: 18 Jul 2027 | Page 5 of 12
D AUSTRALIA A% INSTITUTE DREAM | SEEK | ACHIEVE www.skillsaustralia Assessment 1 Questioning Written Assessment Q1. What four [4] important items of personal safety equipment (PPE) are worn when diagnosing and repairing charging systems? 1. Skin protection 2. Foot wear 3. Heading protection 4. Clothing Q2. 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? When disconnecting the battery, there is no short circuit that could damage any electronic system or even cause injury. Q3. Because vehicle electrical system including the vehicle battery uses DC voltage, the AC must be changed or rectified into DC. Explain how this is done? Rectifiers use a series of diodes, a semiconductor device, to take in the AC charge and redirect the current into one direction of flow. By restricting the flow of power to one direction, the rectifier converts the AC charge into a DC charge the car battery can accept. | Document Name: AURETR129 AT2 Knowledge Short Answer Question | RTO Code: 52010 ] CRICOS Code: 03548F [Version: 1.2 | Approved on: 18 Jul 2022 | Review Date: 18 Jul 2027 | Page 6 of 12
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D AUSTRALIA A% INSTITUTE DREAM | SEEK | ACHIEVE www.skillsaustralia Q4. Describe the principle of “Faraday’s Law”? Faraday's first law of electromagnetic induction states that an electromotive force is produced when a conductor is placed in a magnetic field Q5. What is the purpose of the charging system? The charging system is used to charge the battery and power the vehicle's systems when it is in operation Q6. What is the purpose of a diode trio (Field or exciter diodes)? The diode trioconverts part of the stator output voltages to a DC voltage. The excitersupplies direct current to the field winding of the generator, at whatever voltage is required to overcome the resistance of the winding. Q7. How does voltage regulation circuitry located within a PCM control the AC generator output? The PCM controls and monitors system voltage and AC generator output. The AC generator supplies power to the system and charges the battery | Document Name: AURETR129 AT2 Knowledge Short Answer Question | RTO Code: 52010 | CRICOS Code: 03548F | [Version: 1.2 |Approved on: 18 Jul 2022 [ Review Date: 18 Jul 2027 | Page 7 of 12 |
D AUSTRALIA A% INSTITUTE DREAM | SEEK | ACHIEVE www.skillsaustralia Q8. What is the purpose of the fail-safe circuit contained with many voltage regulators? it was designed to avoid any types of failures that may or may not cause damage to the operator and equipment Q9. How does a voltage regulator control AC generator/alternator voltage output? The voltage regulator does what its name says, it regulates the field current. when the voltage exceeds 14.5V the power supply is cut off. Q10. Describe the two [2] styles of stators windings. 1. oncentrated winding -each coil is wound on its own polar face, 2. Distributed winding - each coil is spread over several polar faces. Q11. On vehicles with a Battery Management System, the PCM uses various inputs to regulate the output of an AC generator/alternator. Name the eight [8] inputs. 1. Air conditioning sinal 2. Coolant temperature sensor 3. Speed sensor 4. Brake switch signal | Document Name: AURETR129 AT2 Knowledge Short Answer Question | RTO Code: 52010 | CRICOS Code: 03548F | [Version: 1.2 |Approved on: 18 Jul 2022 [ Review Date: 18 Jul 2027 | Page 8 of 12 |
D AUSTRALIA A% INSTITUTE DREAM | SEEK | ACHIEVE www.skillsaustralia.edu.au 5. TDC sensor 6. Starter switch signal 7. Temperature sensor 8. Using the diagnostic scan tool live data below, answer the following five questions? fASE SCAN TOOL - 2000 Jeep Cherokee XJ 4.0 (S) File WYehicle Options User Library View Help =181 %] v Dmxreer s [ F5 1Bl 9 ® A @ @& B+ -m| & | & & | * | Description l ‘alue | Units | - Desc_ri@n l ‘alue Units | - \BIENT/BATTERY TEMP SENSOR 235 v B 02 sENSOR 14 0.20 v | I £1/GINE COOLANT TEMP 180 F B EMGINE COOLANT TEMP SENSOR 114 W I THROTTLE POSITION SENSOR #1 0.86 W B nMUM THROTTLE POSITION #1 0.86 W B 5 TTERY VOLTAGE 1353 v B 12MFOLD PRESSURE 119 inhg B |-.C STEPPER MOTOR POSITION 38 steps [ 2DAPTIVE FUEL FACTOR #1 51 % BB 5.2 ROMETRIC PRESSURE 282 inhg IS ENGINE SPEED 736 RPM B O7C #1 START/RUN COUNTER 226 courts [ SPARK ADVANCE as Deg BB 7 2 KE AR CHARGE TEMP 131 F B 1T AKE AR CHARGE TEMP SENSOR 239 v Bl SPEED CONTROL TARGET 00 mPH BB DTC #2 START/RUN COUNTER 226 Courts B O7C #3 START/RUN COUNTER 226 courts [l BATTERY TRIM OFFSET 093 W B CH2RGING SYSTEM TARGET 1365 W B THEFT ALARM STATUS OK B sc7 svie moDE 0.0 Deg [ S/C AD SWITCH INPUT 455 v B ~MEIENTBATTERY TEMP 82 F B o2 sENSOR 24 0.20 W B FUEL CONTROL STATUS #1 CLSD B Ol PRESSURE SENSOR 196 v B o\ PRESSURE 360 psig R O2 SENSOR 112 047 v BB 121IFOLD PRESSURE SENSOR 159 v BB /EHICLE SPEED 00 MPH B 02 sENSOR 141 STATE RICH B 12P GAUGE READING 163 in.hg B THROTTLE OPENING % 00 % B TOTAL SPARK ADVANCE as Deg B 02 SENSOR 211 STATE RICH B o2 sENSOR 212 078 W B 02 SENSOR 1/2 STATE RICH B 02 SENSOR 272 STATE RICH BB FUEL LEVEL SENSOR 424 v B FEEDBACK FACTOR 141 27 % j CAMSHAFT EDGE COUNTER 101 courts Bl CRANKSHAFT EDGE COUNTER 20 Courts v Choose Parameter Set Scan E] ! : - Reorder 3 | Document Name: AURETR129 AT2 Knowledge Short Answer Question | RTO Code: 52010 | CRICOS Code: 03548F [Version: 1.2 |Approved on: 18 Jul 2022 | Review Date: 18 Jul 2027 | Page 9 of 12
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D AUSTRALIA A% INSTITUTE DREAM | SEEK | ACHIEVE www.skills ralia Q12. Referring to the diagnostic scan tool live data above, what is the charging system target? 13,65V Q13. Referring to the diagnostic scan tool live data above, what is the battery voltage? 13,53V Q14. Referring to the diagnostic scan tool live data above, what is Battery temperature? (Convert this to Celsius) 82F = 27.77Celsius Q15. Referring to the diagnostic scan tool live data above, what is the Engine RPM? 736RPM Q16. Referring to the diagnostic scan tool live data above, what is the vehicle speed of this vehicle at the time of testing? 0.0MPH | Document Name: AURETR129 AT2 Knowledge Short Answer Question | RTO Code: 52010 | CRICOS Code: 03548F | [Version: 1.2 |Approved on: 18 Jul 2022 [ Review Date: 18 Jul 2027 | Page 10 of 12 |
D AUSTRALIA A% INSTITUTE DREAM | SEEK | ACHIEVE www.skillsaustralia Q17. On 2011 Ford Mustang, with the engine running, the charging system supplies voltage to the battery and the vehicle electrical system through the battery B+ cable. The voltage that is supplied to the vehicle electrical system is used for the operation of the various vehicle systems and modules. Many modules monitor this voltage and if it rises above a calibrated set point, a DTC will be set. Referring to the 2011 Ford Mustang “Charging System” Workshop Manual, what are the three [3] DTCs that will set? DTC B1317 Battery Voltage High DTC B1676 Battery Pack Voltage Out of Range DTC P0563 System Voltage High Q18. Referring to the 2011 Ford Mustang “Charging System” Workshop Manual, following Pinpoint Test A, with a scan tool connected and PID Generator Voltage Desired (GENVDSD) selected, what is the recommended voltage you Generator Voltage Desired (GENVDSD) PID should indicate? 15,1V Q19. Describe the five [5] steps in a charging system voltage test. 1. The first step is to turn off your vehicle. 2. Make sure to remove the positive terminal of the battery. Check if there is any corrosion on any terminal and make sure to clean it properly. Attach the positive lead of voltmeter, to positive lead of battery. Connect negative lead of voltmeter to negative lead of battery. 3. Check the readings of the voltmeter. If the reading is 12.6 to 12.8, it shows the battery is charged fully. If the voltage is around 12.4 to 12.8, this shows the battery health is good. 4. If the voltage is above 12.9, then the voltage is excessive and it needs to be drained 5. If the voltage is below 12.4, make sure to immediately charge the battery | Document Name: AURETR129 AT2 Knowledge Short Answer Question | RTO Code: 52010 ] CRICOS Code: 03548F [Version: 1.2 | Approved on: 18 Jul 2022 | Review Date: 18 Jul 2027 | Page 11 of 12
D AUSTRALIA A% INSTITUTE DREAM | SEEK | ACHIEVE www.skillsaustralia following: Q20. You are diagnosing a charging system fault on a 2007 Toyota FJ Cruiser and inspecting the charging system no load test. Referring to the 2007 Toyota FJ Cruiser Charging Workshop Manual, locate and interpret the charging circuit without load test specification for the e Engine RPM During Test: 2,000 rpm e Ammeter Reading: 10 A or less for current e Voltage Reading: 13.2to 148V This is the end of the document | Document Name: AURETR129 AT2 Knowledge Short Answer Question | RTO Code: 52010 | CRICOS Code: 03548F | [Version: 1.2 [Approved on: 18 Jul 2022 | Review Date: 18 Jul 2027 | Page 12 of 12 |
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