used as a record to determine

Assessment 1 – Questioning – Written Assessment
Student Name
Student ID Number
Unit Start Date
Unit End Date
Assessment Due Date
Date Submitted
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 Procedureon their website at (insert website address) 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 address) Yes / No
I have access to all required resources? Yes / No
Cheating & Plagiarism Declaration
Student Declaration: In accordance with the RTO’s 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
Date: ______ / ______ / 20______
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

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 Signature Assessor Signature
Date Date
Context and Conditions of Assessment
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. This is an open book assessment and will be conducted at the RTO address. 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 assessment will be required to be completed in 16 hours Your Trainer / Assessor will inform you of the due date for this assessment task. Your Assessor will grade as either S – Satisfactory or NS – Not Satisfactory for the assessment. In all cases your Assessor will provide you with feedback. Only when all assessment tasks have been graded as S – Satisfactory you will be deemed C – Competent in the final result of the unit of competency; if you do not satisfactorily complete all the assessment tasks you will be deemed NYC – Not Yet Competent.
Re-Assessment Conditions
If the evidence is graded as NS – Not Satisfactory you will be required to re-submit the evidence. In this case, you will be provided with clear and constructive feedback based on the assessment decision so that they can improve your skills / knowledge prior to reassessment. Where a ‘NS – Not Satisfactory’ judgement is made, you will be given guidance on steps to take to improve your performance and provided the opportunity to resubmit evidence to demonstrate competence. The assessor will determine and discuss the reasons for NS – Not satisfactory on any of the criteria and will assess you through a different method of assessment e.g. verbal/oral questioning, problem solving exercises. You will be notified within 10 working days of undertaking an assessment of their result in achieving competency If a student does not complete the assessment, they should notify their trainer as to why they did not complete the assessment and if due to illness, a medical certificate must be produced. “This process is detailed more in the “Training and Assessment Policy and Procedure” In the above scenario, student will be given an opportunity for reassessment within 5 working days with no reassessment fee charged. Students who are deemed to be Not Yet Competent (NYC) will be provided with information identifying the areas in which they failed to achieve competency. Students will then have the opportunity to repeat the assessment task within 5 working days of notification with no reassessment fee charged. If a student is deemed NYC in the reassessment or if the student did not approach the RTO within five working days with a valid reason for not availing themselves of the reassessment opportunity, then those students will be given a final chance to re-sit the assessment and will be charged at $200.00. After this no further reassessment attempt will be provided to the student and the student will be required to repeat the whole unit with full fee for the unit as per the fees policy of the RTO. The student will be made aware of the impact of repeating the unit may have on their student visa. (International students only) If a student is found to be cheating or plagiarising their assessment, a $200.00 reassessment fee will be charged for reassessing the assessment within 5 working days. If the student is found to be plagiarising or cheating again after conclusion of the Intervention meeting with the Course Co-ordinator, the matter will be referred to the CEO / Operation Manager which may result in the suspension or cancellation of their enrolment The RTO has intervention strategies, including student support services available to enable students to complete qualification in the expected time frame. Students at risk of not completing within this time frame are identified as early as possible and an intervention strategy is put in place.
The RTO will ensure access to:
automotive workplace or simulated workplace workplace instructions manufacturer engine management system specifications three different vehicles or machinery with complex faults in their engine management systems engine management system diagnostic equipment, including scan tools and oscilloscopes tools, equipment and materials appropriate for diagnosing complex faults in engine management systems.
Evidence to be submitted by the student: –
Completed written responses to the questions in the assessment task
Assessment Decision Making Rules
Your assessor will assess the evidence submitted for the following elements, performance criteria, performance evidence and knowledge evidence to confirm that the student evidence submitted demonstrates validity, sufficiency, authenticity and confirms current skills and knowledge relevant to the unit of competency. Your assessor will be looking for the following in this assessment task: – Identify and confirm the work requirement  Prepare to perform diagnosis  Apply diagnostic procedures  Complete work processes  work health and safety (WHS) and occupational health and safety (OHS) requirements relating to diagnosing complex faults in engine management systems, including procedures for:  working with high pressure petrol fuel systems  working on vehicle high voltage ignition systems  identifying hazards and controlling risks associated with wearing jewellery while working around high current wiring systems  types of complex faults relating to engine management systems, including:  intermittent  multi-system  introduced as a result of system repair  indirect, caused by the influence of external systems  types, functions and operation of engine management systems, including:  injectors  air flow meters  temperature sensors  pressure sensors  throttle position sensors  testing procedures for engine management systems, including procedures for:  dynamic and static testing of vehicle or machinery  component failure analysis  types, functions, operation and limitations of diagnostic testing equipment required to diagnose complex faults in engine management systems, including:  scan tools  oscilloscopes  procedures for accessing and interpreting scan tool system data, including:  diagnostic trouble codes (DTCs), including:  conditions that set the DTCs  conditions for running DTCs  live data  freeze frame data  waveforms  methods and processes for documenting and reporting diagnostic findings and recommendations. 
Assessment 1 – Questioning
Written Assessment
  1. Identify some important items of personal safety when working on a vehicle that is equipped with an engine management system?
  1. Which of the following statements about safety glasses is true?
  1. They should offer side protection
  2. The lenses should be made of a shatterproof material
  3. Some service operations require additional eye protection to be worn with safety glasses
  4. All answers are correct
  1. Rings, necklaces, bracelets and watches should not be worn while working around high current wiring systems. Why?
  1. Name six (6) precautions that should be observed when working on electronic-type ignition systems?
  1. What two (2) precautions should be taken before disconnecting or removing a component of an EFI system?
  1. What is an intermittent fault?
  1. Complete the following statement about intermittent engine management faults using the following words.

Words: Always, Assistance, Causes, Component, Diagnose, DMM, Electrical, History, Identify, Information, Intermittent, MIL, Problems, Resistance, Scan, Set, Short, Suggestions, Symptoms, Visually

An __________ fault is a fault that is not __________ present. It may not activate the __________ or cause a DTC to be __________. Therefore, intermittent __________ can be difficult to __________. By studying the system and the relationship of each __________ to another, you should be able to create a list of possible __________ for the intermittent problem. To help __________ the cause, follow these steps:

  1. Observe the __________ DTCs, DTC modes, and freeze frame data.
  2. Call technical __________ for possible solutions. Combine your knowledge of the system with the service __________ that is available.
  3. Evaluate the __________ and conditions described by the customer.
  4. Use a check sheet to identify the circuit or __________ system component that may have the problem.
  5. Follow the __________ for intermittent diagnosis found in service material.
  6. __________ inspect the suspected circuit or system.
  7. Use the data capturing capabilities of the __________ tool.
  8. Test the circuit’s wiring for __________, opens, and high __________. This should be done with a __________ and in the typical manner, unless instructed differently in the service manual.
  1. Identify various causes of intermittent engine management system electrical faults?
  1. A fault that comes and goes and is not always present is called?
  1. Electrical
  2. Intermittent
  3. Sensor
  4. Wiring
  1. An engine that lacks power could be caused by?
  1. Fuel delivery system fault
  2. Exhaust system fault
  3. Automatic transmission fault
  4. All answers are correct
  1. A lean condition caused by a vacuum leak, restricted injectors, dirty MAF, clogged fuel filter, or bad fuel pump exists, the LTFT will have a negative number?
True or False:
  1. Which of the following would NOT cause the fuel trim to be out of range?
  1. Faulty fuel pressure regulator
  2. Restricted fuel filter
  3. Faulty mass air flow (MAF) sensor
  4. Faulty IAC motor (IAC)
  1. A vehicle with a DTC for an engine coolant temperature out of range code is being tested. The serial data stream shows the coolant temperature to be 93 degrees. When the technician tests the resistance between the ETC terminals, he finds infinite resistance. The specifications call for 20 to 40 ohms at 94 degrees. After the ECT is replaced and the code is erased, the system runs normally and the code and MIL illumination do not reoccur. How is this possible?
  1. There was excessive air in the cooling system; when the ECT sensor was removed, the trapped air bled out
  2. The ETC code was set by a loose connection where the harness meets the ECT terminals; disconnecting and reconnecting the plug essentially fixed the problem
  3. The problem is an intermittent electrical fault; it will eventually reoccur
  4. When the ECT failed, the PCM substituted a nominal ECT value that allowed the engine to run in limp home mode; the substituted value was displayed by the scan tool
  1. Complete the following statement about faults induced as a result of an incorrect repair using the following words.

Words: Aftermarket, Circuits, Complaint, Connector, Damaged, Electrical, Grounds, Identifying, Problem, Relay, Repairs, Retained, Specified, Terminals, Testing, Verify

After __________ the cause of the problem, __________ should be made. When servicing or repairing OBD-II __________, the following guidelines are important:

  • Do not connect __________ accessories into an OBD-II circuit.
  • Do not move or alter __________ from their original locations.
  • Always replace a __________ with an exact replacement. __________ relays should be thrown away, not repaired.
  • Make sure all __________ locks are in good condition and are in place.
  • After repairing connectors or connector __________, make sure the terminals are properly __________ and the connector is sealed.
  • When installing a fastener for an __________ ground, be sure to tighten it to the __________ torque.

After repairs, the system should be rechecked to __________ that the repair took care of the __________. This may involve road __________ the vehicle in order to verify that the __________ has been resolved.

  1. On ETC (throttle-by-wire) equipped vehicles, learn or relearn procedure should be completed anytime the PCM has been replaced or updated, or after the throttle body has been cleaned or replaced using a scan tool?
True or False:
  1. On ETC (throttle-by-wire) equipped vehicles, the system does not require a relearn if the battery has been disconnected. The system will automatically go through the procedure when the engine is restarted?
True or False:
  1. A vehicle towed into the shop with a “cranks but doesn’t start” problem. A quick check under the hood reveals that the spark plugs are not firing and the injectors are not receiving a pulse from the PCM. The technician notices that the MIL light does not come on when the key is turned to the run position. What would you do next?
  1. Check the PCM’s fuses, power wires, and ground wires
  2. Replace the PCM
  3. Check the main power relay in the power distribution centre
  4. Check for codes with a scan tool
  1. What could a leak in the fuel regulator or the fuel pump check valve that allows the fuel pressure to slowly bleed down after the engine shut down cause?
  1. Hard starting
  2. Surging at high speed
  3. Detonation
  4. Excessively lean LTFT
  1. In a GDI system (gasoline direct injection) the injector sprays fuel into the ______.
  1. Intake manifold (plenum)
  2. Intake runner in manifold
  3. Intake port in cylinder head
  4. Cylinders (combustion chamber)
  1. The injector pulse width is ______.
  1. The size of the injector nozzle
  2. The amount of time the injector opens and sprays fuel
  3. The voltage applied to the injector solenoid coil
  4. The distance between the injector tip and the centre of the intake port
  1. Explain the major differences between Throttle Body (TBI) Injectors and Port Fuel (PFI) Injectors?
  1. Identify five (5) advantages of Gasoline Direct Injection (GDI) systems?
  1. The Intake Air Temperature (IAT) sensor is an integral part of the Mass Airflow (MAF) sensor.
True or False:
  1. The Intake Air Temperature (IAT) sensor is a discrete sensor located in the intake air passages or air cleaner assembly.
True or False:
  1. Which of the following is NOT a type of Mass Airflow (MAF) sensor?
  1. Karmen-Vortex
  2. Van type
  3. Hot wire
  4. Hall effect
  1. The Mass Airflow (MAF) sensor measures the amount of air in grams per second entering the engine.
True or False:
  1. The BARO sensor informs the PCM about charges in weather and altitude.
True or False:
  1. The PCM supplies a five (5) volt reference voltage to the Manifold Absolute Pressure (MAP) sensor.
True or False:
  1. The hot wire in the Mass Airflow (MAF) sensor is held at a constant 200 degrees Celsius.
True or False:
  1. Complete the following statement about Mass Airflow (MAF) sensors using the following words.

Words: Airflow, Between, Cleaner, Control, Engine, Entering, Intake, Load, Relationship, Sensor, Systems, Throttle, Timing

The mass __________ (MAF) sensor measures the flow of air __________ the engine. This measurement of __________ air volume is used to calculate __________ load (throttle opening and air volume). It is similar to the __________ of engine load to MAP or vacuum __________ signal. Engine __________ inputs are used to __________ the fuel injection and ignition __________, as well as shift __________ in automatic transmissions. The airflow sensor is placed __________ the air cleaner and __________ plate assembly or inside the air __________ assembly.

  1. A correctly functioning Manifold Absolute Pressure (MAP) sensors will have?
  1. Closed throttle, the engine produces a low MAP value
  2. Wide-open throttle produces a high MAP value
  3. None of these answers are correct
  4. Both A and B are correct
  1. Complete the following statement about Manifold Absolute Pressure (MAP) sensors using the following words.

Words: Absolute, Cylinders, Engine, Fuel, Intake, Manifold, MAP, Measures, Module, Output, PCM, Pressure, Reference, Resistance, Signals, Vacuum

A __________ absolute pressure (MAP) sensor senses air __________ or vacuum in the intake manifold. The sensor __________ manifold air pressure against an __________ pressure. The MAP sensor uses a perfect __________ as a reference pressure. The __________ sensor measures changes in the __________ manifold pressure that result from changes in __________ load and speed. The __________ sends a voltage __________ signal to the MAP sensor. As the pressure changes, the sensor’s __________ also changes. The control __________ determines manifold pressure by monitoring the sensor __________ voltage.

The PCM uses the MAP __________ to calculate how much __________ to inject in the cylinders and when to ignite the __________.

  1. The Engine Coolant Temperature (ECT) sensor is typically found in the radiator.
True or False:
  1. The resistance of the Intake Air Temperature (IAT) sensor increases as air temperature increases.
True or False:
  1. A throttle position sensor has?
  1. A 5-volt reference input terminal
  2. A 0 to 5-volt signal output terminal
  3. A ground terminal
  4. All answers are correct
  1. Complete the following statement about Throttle Position (TP) sensors using the following words.

Words: Arm, Body, Location, Mixture, Mounted, Opening, PCM, Plates, Position, Proper, Relative, Resistor, Sensor, Shaft, Signal, Voltage

Throttle __________ (TP) sensors send a signal to the __________ regarding the rate of __________ opening and the __________ throttle position. The wiper arm in the __________ is rotated by the throttle shaft. As the throttle __________ moves, the wiper __________ moves to a new __________ on the __________. The return __________ signal tells the PCM how much the throttle __________ are open. As the __________ tells the PCM that the throttle is __________, the PCM enriches the air/fuel __________ to maintain the __________ air/fuel ratio. The TP sensor is __________ on the throttle __________.

  1. Normal throttle position sensor signal voltage at closed throttle is?
  1. 0.5 to 0.7 volts
  2. .5 to 1.0 volts
  3. 0.05 to 1.0 volts
  4. .5 to 2.0 volts
  1. An accelerator pedal position sensor (APP) is used on vehicles equipped with?
  1. Electronic throttle control
  2. Cruise control
  3. Torque convertor clutch (TCC)
  4. All answers are correct
  1. You can test an MAF sensor with a scan tool by watching for erratic changes in flow while the engine idles.
True or False:
  1. You can check an MAF sensor by tapping it lightly with the handle of a screwdriver while watching the waveform on an oscilloscope.
True or False:
  1. A technician connects a DMM with a MIN/MAX/AVG function to the output of an oxygen sensor. The engine is at 2000rpm for several minutes. During the test, the voltage toggles rapidly between 150 and 900 millivolts. At the end of the test, the MAX voltage was .967 V, the MIN voltage was .087 V, and the AVG voltage was .683 V. What could be the problem?
  1. The oxygen sensor is faulty and should be replaced
  2. There could be a vacuum leak that caused the sensor voltage to have a higher than normal average
  3. None of these answers are correct
  4. Both A and B are correct
  1. Complete the following statement about testing a defective MAP sensor using the following words.

Words: Defective, Diagnosis, Electrical, Engine, Excessive, Ground, Hose, Ignition, Inspect, Low, Manifold, Measuring, PCM, Reference, Repair, Replace, Sensor, Specified, Specifications, Surging, Voltage

A __________ MAP sensor may cause a rich or lean air/fuel ratio, __________ fuel consumption, and engine __________. The sensor is mounted on the intake __________ or someplace high in the __________ compartment. A hose supplies the __________ with engine vacuum. __________ the sensor, its __________ connectors, and the vacuum hose. The __________ should be checked for cracks, kinks, and proper fit.

The __________ supplies a 5-volt reference signal to the sensor. Begin your __________ of the MAP circuit by __________ that voltage. With the __________ switch on, backprobe the __________ wire and measure the __________. If the reference wire does not have the __________ voltage, check the reference voltage at the PCM. If the voltage is within __________ at the PCM but low at the sensor, __________ the wire. When this voltage is __________ at the PCM, check the voltage supply wires and __________ wires for the PCM. If the wires are good, __________ the computer.

  1. Complete the following statement about testing a defective MAF sensor using the following words.

Words: Connections, Diagnosis, DTC, Free, Good, Ground, MAF, Make, Manual, Observe, Obstructions, Plugged, Poorly, Procedure, Reference, Screen, Sealing, Sensors, Should, System, Test, Throttle, Visual, Voltage, Voltmeter

The test __________ for hot-wire MAF __________ varies with the vehicle __________ and year. Always follow the __________ procedure in the appropriate service __________. Most often __________ of a MAF sensor involves __________, circuit, and component checks. The __________ sensor passage must be __________ of debris to operate properly. If the passage is __________, the engine will usually start but run __________ or stall and may not set a __________.

Check the air inlet __________ (air filter, housing, and ductwork) for __________, blockage, proper installation, and __________. Check the __________ of the MAF sensor for dirt and other contaminants. Check the __________ plate bore for dirt build-up.

Make sure the electrical __________ to the MAF are sound. Check the __________ voltage to the sensor and the __________ circuit. To check the MAF sensor’s __________ signal and frequency, connect a __________ to the MAF voltage signal wire and a __________ ground. Start the engine and __________ the voltmeter reading. On some MAF sensors, this reading __________ be 2.5 volts.

  1. When the throttle is opened gradually to check the TP sensor voltage signal, tap the sensor lightly and watch for fluctuations on the voltmeter, indicating a defective sensor.
True or False:
  1. When observing a Hall-effect sensor on a oscilloscope, pay attention to the downward and upward pulses.
  1. These should be straight
  2. These should appear at an angle
  3. None of these answers are correct
  4. Both A and B are correct
  1. Complete the following statement about scan tool using the following words.

Words: Activate, Actuators, Always, Computer, Correct, Diagnose, Diagnosing, DTC’s, Procedures, Scan, Management, System

A __________ tool and/or a special electronic tester is used to __________ most engine __________ system. These can only retrieve __________; they may also be able to __________ various __________ in the system. The exact __________ and available data from the vehicle’s __________ will vary with manufacturer and the __________ found on the vehicle. __________ refer to the __________ service information when __________ engine management systems.

  1. Scan tools can be used to cycle on and off some actuators such as injectors, vacuum solenoids, idle air control motors and the like.
True or False:
  1. The snapshot feature on the scan tool can record the sensor data and conditions leading up to the vehicle setting a DTC.
True or False:
  1. A technician is setting up a oscilloscope to measure a sensor.
  1. The vertical voltage scale must be adjusted in relation to the expected voltage signal
  2. The trigger slope must be set to positive if the trace begins with a rising voltage
  3. None of these answers are correct
  4. Both A and B are correct
  1. Complete the following statement about testing actuators with an oscilloscope using the following words.

Words: Action, Bad, Basically, Beginning, Circuits, Computer, Conditions, Devices, Downward, Energises, Evidence, Frequency, Measured, Modulated, Noise, Observe, Off, Oscilloscope, Pulse, Shape, Solenoids, Spikes, Test, Turning, Watching, Waveforms, Width

Most computer-controlled __________ are ground-controlled circuits. The PCM __________ the actuator by providing the ground. On an __________ trace, the on-time pulse is the __________ pulse. On positive-feed circuits, where the __________ is supplying the voltage to turn a circuit on, the on-time __________ is the upward pulse. One complete cycle is __________ from one on-time pulse to the __________ of the next on-time pulse.

To __________ an actuator, you need to know what it __________ is. Most actuators are __________. The computer controls the __________ of the solenoid by controlling the pulse __________ of the control signal. You can see the __________ on and off of the solenoid by __________ the control signal. The voltage __________ are caused by the discharge of the coil in the solenoid. Some actuators are controlled pulse-width __________ signals. These signals show a changing pulse width. These __________ are controlled by varying the pulse width, signal __________, and voltage levels.

Both __________ should be checked for amplitude, time, and __________. You should also __________ changes to the pulse width as operating __________ change. A __________ waveform will have __________, glitches, or rounded corners. You should be able to see __________ that the actuator immediately turns __________ and on according to the commands of the computer.

  1. What would be the conditions that DTC P0115 Engine Coolant Temperature Circuit Malfunction can be logged as a fault in the engine management system? Consult the manufactures workshop manual. To answer the following question, follow link:
  1. What are the conditions for running DTC P0171 System Too Lean (Bank 1)? Consult the manufactures workshop manual. To answer the following question, follow link:
  1. With the PID/data monitor function, input/output signal monitor items set in the engine control module can be selected and read out in real-time. Answer the following PID monitored data below from the follow link.
Item (definition) Definition Unit/Condition







































  1. Answer the following ‘Freeze Frame Data Items’ for the engine management systems below. Answer the following Freeze Frame data below from the follow link.
Freeze Frame Data Item Unit Description Corresponding PID Data Monitor Item



















  1. What is the MAF sensor operating voltage at idle after the vehicle warmed up?
  1. Explain how to access the “PID Data” list using the scan tool?
  1. What is Engine Coolant Temperature (ECT) PID voltage when the temperature is 80 °C (176 °F)?

To answer the following question, follow link:

  1. The sensor and output status data stored when a DTC is set is called?
  1. Snapshot data
  2. Freeze frame data
  3. Mode 6 data
  4. Failure record
  1. What is a freeze frame?
  1. What is a waveform library?
  1. Looking at the TP sensor waveform below, what can the waveform tell us about this TP sensor?
  1. Complete the following statement about documenting you’re diagnostic finding on the job card using the following words.

Words: Clear, Defective, Diagnostic, Documentation, Equipment, Found, Job, Multimeter, Operations, Problem, Sensor, Technician, Trouble, Write,

The service __________ must document the __________ card. This means that the service technician must __________ (or type) what all was done to the vehicle including documenting __________ components or conditions that were __________ in the course of the __________. The __________ is often called “telling the story” and should include the following:

  • The test __________ used to diagnose the __________. For example: Used a scan tool to retrieve P2102 Throttle Actuator Control Motor Circuit Low diagnostic __________ code.
  • Used a digital __________ to determine a Throttle Actuator Control Motor __________ was defective.
  • List what parts or service __________ were performed. For example: Replaced the Throttle Actuator Control Motor. Used a scan tool to __________ the diagnostic trouble codes and verify that the system operated correctly.
  1. Why is it very important that the Job Card is completed correctly?
  1. When retuning a vehicle to the customer the vehicle should?
  1. Be cleaned.
  2. Have documentation completed.
  3. Post repair test completed.
  4. All answers are correct.

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