AURETR132_AT2 Completed

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Skills Institute Australia - Adelaide *

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131

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Electrical Engineering

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Feb 20, 2024

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AURETR132 DIAGNOSE AND REPAIR AUTOMOTIVE ELECTRICAL SYSTEMS ASSESSMENT 2 – SHORT ANSWER QUESTIONS FEEDBACK COVER SHEET STUDENT NAME Matheus Luiz Jacomino Alves STUDENT ID S9999923 ASSESSOR NAME Ken Hilson EVIDENCE COLLECTED BENCHMARK REQUIREMENTS ME 1 st Attempt 2 nd Attempt ⦁ Answers to Knowledge Questions OUTCOME Satisfactory Not Satisfactory Satisfactory Not Satisfactory Satisfa Not Sa DATE / / 20 / / 20 / ASSESSOR INITIAL FEEDBACK TO STUDENT ASSESSOR SIGNATURE DATE of FINAL OUTCOME 1

Student Guide for Written Knowledge Assessment Overview of Assessment This is a written assessment task you will be assessed on your knowledge of diagnosing and repairing automotive electrical systems. The topics that will be covered in the assessment are: ⦁ Prepare to diagnose and repair automotive electrical systems ⦁ Diagnose automotive electrical system ⦁ Repair automotive electrical system ⦁ 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 ⦁ 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 the written assessments, you will need to answer 109 questions in total. Assessment 1 Quiz Questions will be completed using your Canvas account. The assessment has 67 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 a has 42 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 o a trainer/assessor. 2

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 cann 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 automotive electrical systems, including: ⦁ information provided by customers and supervisors ⦁ manufacturer specifications and procedures or equivalent documentation ⦁ workplace procedures required to diagnose and repair automotive electrical systems, including: ⦁ establishing serviceability of tools and equipment ⦁ documentation procedures ⦁ housekeeping procedures, including: ⦁ examination of tools and equipment ⦁ storage of equipment ⦁ identification, tagging and isolation of faulty equipment ⦁ disposal of excess materials ⦁ recycling procedures ⦁ Work health and safety (WHS) and occupational health and safety (OHS) requirements relating to diagnosing and repairing automotive electrical systems, including procedures for: ⦁ Using specialised tools and equipment ⦁ Using appropriate personal protective equipment (PPE) ⦁ Identifying hazards and controlling risks associated with: ⦁ Working on high voltage ignition systems ⦁ Wearing jewellery while working around high current wiring system ⦁ Operating principles of automotive electrical systems and associated components including: ⦁ Current, voltage, resistance and power ⦁ Series circuits ⦁ Parallel circuits ⦁ Series and parallel circuits ⦁ Ohm’s law ⦁ Faraday’s law ⦁ Kirchhoff's law ⦁ Magnetism and direct current (DC) motor operation ⦁ Electromagnetic interference and radiation ⦁ Cable types and sizes and current carrying capacity ⦁ Circuit protection devices ⦁ Purpose and operation of automotive electrical systems and components, includin ⦁ Wiper motors ⦁ Electric windows ⦁ Electric door locks ⦁ Fan motors ⦁ Horns ⦁ Lighting ⦁ Radio aerials ⦁ Diagnostic testing procedures for automotive electrical systems, including: ⦁ Visual, aural and functional assessments of electrical system components including: ⦁ Component damage and wear ⦁ Component or connector corrosion ⦁ Component water or moisture ingress ⦁ Common faults in electrical circuits, including: ⦁ Open circuits 3

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Assessment conditions Competency is to be assessed in the workplace or a simulated environment that 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 electrical systems that they have worked on, e.g. repair orders. Assessors must verify performance evidence through questioning on skills an knowledge to ensure correct interpretation and application. The following resources must be made available: ⦁ automotive repair workplace or simulated workplace ⦁ workplace instructions ⦁ manufacturer automotive electrical system specifications ⦁ three different vehicles or machinery with electrical system faults ⦁ diagnostic equipment for electrical systems, including multimeter ⦁ tools, equipment and materials appropriate for repairing automotive electrical systems, including: ⦁ automotive wiring ⦁ heat shrink ⦁ soldering iron Resources required Learning Resources available to students include: ⦁ Automotive Technology (A System Approach) 7 th Edition – Chapters 2, 5, 6, 7, 16, 20, 23 & 27 ⦁ Trainer Handouts Results/Re- assessment ⦁ The Assessor will grade the assessment and record the result on the front page o this document. (S) Satisfactory if all questions are correct and (NS) Not Satisfacto if any questions are left incorrect. ⦁ Feedback will be provided on either result. ⦁ 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. ⦁ Students are provided with 3 attempts for the knowledge questions. 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. 4

Assessment 1 – Questioning Written Assessment Q1. What four [4] important items of personal safety equipment (PPE) are worn when diagnosing and repairing automotive electrical systems? ⦁ Gloves ⦁ Eyes Glasses ⦁ Hard Hats ⦁ Lab Coastr 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? To work on a vehicle's electrical system, it is important to disconnect the battery before disconnecting any wires or electrical components to avoid damage to the vehicle or damage to yourself. This is because the battery provides power to the entire electrical system, and disconnecting it ensures that there is no active electricity flowing through the system while you work on it. Q3. What is a parallel circuit? In a parallel circuit, multiple branches are connected, allowing the current to divide among them. Consequently, only a portion of the total current flows through each individual branch. Although the voltage (or potential difference) across every branch in a parallel circuit remains constant, the currents within each branch may vary. 5

Q4. Describe the principle of “Faraday’s Law”? Faraday's Law of Electromagnetic Induction states that a change in the magnetic field within a closed circuit induces an electromotive force (EMF) or voltage in the conductor surrounded by the circuit. This induced voltage is proportional to the rate at which the magnetic field changes. In other words, the greater the rate of change of the magnetic flux, the greater the induced voltage. Q5. How is wire size determined? By the diameter of the conductor Q6. There are three [3] major factors that determine the proper size of wire to be used. What are they? ⦁ Choosing the appropriate wire diameter for a circuit is essential to ensure it can effectively carry the required current for the proper operation of load components, preventing issues related to electrical resistance and ensuring optimal performance. ⦁ Selecting a wire that can withstand anticipated vibrations is crucial to maintaining a stable and reliable electrical connection. This characteristic ensures the wire's resilience in the face of mechanical movements or environmental vibrations, preventing potential disruptions or damage to the overall circuit. ⦁ Selecting a wire with the ability to withstand anticipated heat exposure is crucial for preventing overheating issues and ensuring the safety and reliability of the electrical system. 6

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Q7. Name the five [5] components of the wiper/washer assembly below. ⦁ Washer Nozzle ⦁ Washer Reservoir ⦁ Hose ⦁ Washer Pump ⦁ Wiper Motor Q8. Obviously, the purpose of any power window system is to? The power window system is responsible for opening and closing windows through switch operation. When the power window switch is activated, the power window motor rotates, driving the mechanism that controls the window's movement. This motorized system provides convenient and efficient control over the vehicle's windows. Q9. Today, most power door lock systems place the motor in the door latch assembly and are controlled by the BCM. Why? 7

This system enables remote control for unlocking and locking functions and seamlessly integrates with the vehicle's security system. Q10. Explain how the power door lock system operates? When the driver's or passenger's control switch is activated, whether for locking or unlocking, power from the fuse panel is directed through the switch to a reversible motor. Q11. Some vehicles have an Auto-lock or automatic door lock system. How does this system work? This feature enables automatic locking of all doors when the doors are closed, ignition is turned ON, the transmission is shifted out of PARK, and the vehicle is moving at a speed exceeding 4 mph (7 km/h). 8

Q12. Name the five [5] components of the blower fan [heater fan] assembly below. ⦁ Heater Assembly ⦁ Ground Wire ⦁ Blower Motor Cooling Tube ⦁ Resistor Assembly ⦁ Blower Motor and Cage Assembly Q13. Explain the function of the of the blower fan [heater fan] in the vehicle? The blower or interior fan motor plays a crucial role in circulating air from the heating and air conditioning (HVAC) system. It moves the air through ductwork and into the passenger compartment for effective climate control. Q14. Explain how the blower fan [heater fan] multi-position switch direct electricity to power the fan? 9

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The switch directs electricity to different points on a stepped resistor block, typically situated near the heater housing. This resistor block is connected in series to the blower motor, allowing for varied speed control in the operation of the blower. Q15. Name the seven [7] components of the horn assembly below. ⦁ Armature 5. Housing Halves 2. Diaphragms 6.Internal Resistors 3.Batteries Positive 7.Contacts 4.Field Coils Q16. The lighting system provides power to both exterior and interior lights. What does the exterior lights systems consist of? Name eight [8]. It consists of the headlights, parking lights, marker lights, taillights, turn signals, hazard warning lights, back-up lights, stoplights, courtesy lights, dome/map lights, instrument illumination or dash lights, coach lights (if so equipped), headlight switch, and various other control switches. Q17. What are adaptive brake lights? 10

Adaptive brake lights function in two modes: normal and intense. During moderate braking, the standard brake light LEDs are activated. However, in the event of severe braking or when the ABS system is triggered, additional groups of LEDs also light up. This dual-mode operation is designed to effectively communicate to following drivers that the vehicle is slowing down at an accelerated rate, contributing to enhanced safety awareness on the road. Q18. List three [3] common locations of courtesy lights. ⦁ Door Panel ⦁ Under the Instrument ⦁ In the Centre of Headlining Q19. Describe adaptive headlights. The headlamp bases are designed to swivel, directing illumination towards curves in the road. This system dynamically adjusts the headlights to align with the direction in which the vehicle is turning. Controlled by the BCM (body control module), the system utilizes information from various sensors, including Vehicle Speed Sensor (VSS), yaw rate sensor, and steering angle sensor, to ensure precise and adaptive headlamp positioning during turns. Q20. Describe how daytime running light’s function. Approximately 6 volts are employed to power the vehicle's high beam lights. For their operation, the ignition must be turned on, the parking brake released, and the headlight switch must be turned off. 11

Q21. What are the three [3] classifications of electrical problems? ⦁ High resistence ⦁ Open circuit ⦁ Short Circuit Q22. Explain how you would bench test a relay [the relay is removed from the vehicle]. Use an ohmmeter to check continuity between the coil terminals. If the reading is "OL" (open loop), replace the relay as it indicates a lack of continuity in the coil circuit. Connect the relay's coil terminals to the battery, ensuring the correct polarity (positive to positive, negative to negative). Test for continuity between the power input and output terminals of the relay. If the ohmmeter reads "OL," replace the relay, as it indicates an open circuit between these terminals. Q23. What is the procedure for soldiering electrical wire together? To join the two cables, bring them together and position the tip of the soldering iron underneath the wires. Heat the wires until the temperature is sufficient to melt the resin-core solder placed on top of them. This process allows the solder to flow and create a secure and conductive bond between the cables. Q24. Why should we use heat shrink on all wiring repairs? Heat shrink tubing is frequently employed to safeguard and insulate wires and connectors from moisture, dust, and various contaminants. It serves as a protective covering that shrinks when heat is applied, creating a secure seal around the components. Additionally, heat shrink tubing can be utilized for repairing damaged insulation, effectively preventing further issues such as short circuits and ensuring the integrity of the electrical system. 12

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Q25. Explain how a crimpled connection is made, or a crimp terminal attached? First, strip the insulation from the wire to expose the appropriate length of copper. Ensure the terminal is crimped tightly onto the bare wire using crimping pliers, applying enough pressure for a secure connection without causing damage to the terminal. This meticulous process ensures a reliable and durable electrical connection. Q26. How do you remove and replace the male and female terminals in a multipin connector? When removing terminals, use the appropriate terminal removal tool. Insert the tool into the back of the connector while depressing the locking tab. This method allows for the secure and proper extraction of terminals without causing damage to the connector or the terminal itself. Q27. When replacing basic electrical components such as headlight bulb, what care is needed? It's important not to touch the headlight bulb with bare hands. The natural oils present on the skin can stain the bulb, and this can significantly reduce its lifespan. Handling the bulb with care helps maintain its longevity and ensures optimal performance. Q28. After the removing the door trim to replace the power window motor assembly. Referring to the Automotive Technology textbook, what are the five [5] steps to replace the power window motor assembly? ⦁ ⦁ 13

⦁ ⦁ ⦁ Q29. Why is it important to verify that the vehicle you have repaired is operating correctly? It's essential never to assume that your work has resolved the initial issue. Verify that the fault has been rectified, and thoroughly check for any additional problems that may have arisen as a result of the repairs before returning the vehicle to the customer. This precaution ensures that the vehicle is in proper working condition and meets the necessary standards of safety and performance. Q30. What must an automotive technician follow while working in a workshop when using all tools and equipment? an automotive technician must adhere to workshop safety guidelines and procedures when using all tools and equipment Q31. How does an automotive technician document the work that was performed on a vehicle? Writing or tryping in the description of the steps performance during the diagnosis of the vehicle should be worded as of the technician is talking to the customer Q32. After inspecting your tools for cracks, broken parts, or other dangerous conditions before using them. Would you use them broken or damaged? 14

Never use broken or damaged tools Q33. What is the best way to achieve a long life out of your tools? each tool used must be cleaned and checked before placing it back into the toolbox Q34. When are lockout/tagout practices and procedures used for tools, equipment or materials? when it is not safe to use them or they are being removed Q35. How do you dispose of excess materials like old wiring harness, headlight assembly and control modules? These materials must be disposed of correctly in the recyclable copper bin. Q36. Can you reuse second-hand components such as power window motor, wiper motor, and combination switches that are in good condition on another vehicle of the same make or model? It is possible to use a second-hand component in another vehicle as long as it is the same make and model Q37. Which source of information will give you the most detail about diagnosing and repairing automotive electrical systems on the vehicle you are working on? 15

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Workshop manual Q38. What must an automotive technician adhere to in the Workshop when and repairing automotive electrical systems? An automotive technician must strictly adhere to workshop safety guidelines and procedures. Additionally, it is crucial to follow the manufacturer's processes outlined in the workshop manual. This ensures a safe working environment and the correct implementation of procedures specified by the vehicle's manufacturer, contributing to the overall efficiency and reliability of the maintenance or repair work performed in the workshop. Q39. Referring to the 2007 Toyota FJ Cruiser DOOR LOCK workshop manual, what is the standard resistance reading when inspecting the front door courtesy switch on the driver's side? Not pushed (ON) - Below 1 ohm Pushed (OFF) - 10 kohm or higher Q40. You are working on a 2007 Toyota FJ Cruiser where only one headlight comes on. Referring to the 2007 Toyota FJ Cruiser – LIGHTING SYSTEM Workshop Manual, what are the suspected areas in order of the cause? Bulb Head fuse Harness or connector Q41. 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. What should the service technician do if they have any doubts? talk to the service advisor Q42. Why is it very important that the Job Card is completed correctly? 16

That the customer knows what was done, which parts were replaced and what recommendations are for the vehicle This is the end of the document 17