Reference no: EM132652456
AURLTB002 Analyse and Evaluate Faults in Light Vehicle Braking Systems Assignment - Ashton College, Australia
Purpose of Assessment - This unit describes the performance outcomes required to analyse and evaluate faults in light vehicle braking systems in order to sustain, vary or enhance performance. It involves identifying, evaluating, selecting, justifying and documenting the most appropriate rectification method or variation to the rectification method. The unit includes the analysis of multi-system and intermittent faults which may be caused by operating in adverse conditions.
It applies to those working in the automotive service and repair industry. The braking systems include those of light vehicles, light commercial vehicles or outdoor power equipment.
No licensing, legislative, regulatory or certification requirements apply to this unit at the time of publication.
Assessment Task 1 - Knowledge Assessment
Q1. Identify five (5) important items of personal protection you will need when analysing and evaluating braking systems.
True or False
Q2. Wear safety glasses while disassembling the caliper to protect your eyes from spraying brake fluid.
Q3. When analysing and evaluating brake parts, do not create dust by cleaning with a dry brush or with compressed air. Asbestos fibres can become airborne if dust is created during analysing and evaluating the brake parts. Breathing dust containing asbestos fibres can cause serious bodily harm.
Fill in the gap about friction materials
Words: Asbestos, Friction, Precautions
Q4. Automotive _______________ materials may contain substantial amounts of asbestos. Studies indicate that exposure to excessive amounts of _______________ dust can be a potential health hazard. It is important that anyone handling brake linings understands this and takes the necessary _______________ to avoid injury.
Q5. When handling, trapping, storing and disposing of new or waste hydraulic fluid, which document should you use to find this information?
Q6. How should waste hydraulic fluid be stored and disposed?
Multiple choice
Q7. When changing the hydraulic brake fluid, what should you use to catch the waste fluid?
A. Brake bleeder.
B. Mod bucket.
C. Drain.
D. Funnel.
True or False
Q8. Symptom-based diagnostic charts focus on a definition of the problem and offer a list of possible causes of the problem.
Q9. Critical thinking is a way to evaluate something with bias.
Q10. Good critical thinking begins the process of problem solving by observation.
Multiple choice
Q11. The first step in a logical diagnostic approach is to _________?
A. Gather information.
B. Verify the problem.
C. Research the information.
D. None of these answers are correct.
Q12. When diagnostic aids are not available or prove to be ineffective, good technicians conduct a visual inspection and then take a logical approach to finding the cause of the problem. This relies on critical thinking skills as well as system knowledge. Logical diagnosis follows what seven [7] steps?
Q13. How should you analyse and evaluate what the problem is and when it occurs?
Q14. Describe the proper steps to follow when testing and diagnosing an antilock brake system.
Q15. When analysing and evaluating brake hydraulic concerns on a vehicle fitted with ABS, what is the resource for determining ABS brake bleeding procedures and why it should always be used.
True or False
Q16. Before covering the typical braking system complaints, it is important to remind you to get as much information as possible about the complaint from the customer. Then road test the vehicle to verify the complaint.
Q17. Always follow the vehicle manufacturer's procedures when diagnosing an ABS system.
Q18. In general, ABS analysing and evaluating requires three [3] to five [5] different types of testing that must be performed in the specified order listed in the service information. Types of testing may include?
Multiple choice
Q19. Which of the following can lead to brake hose failure _________?
A. Incorrect brake fluid.
B. Stressing the hose during installation.
C. Extreme cold operation.
D. All of these answers are correct.
Q20. What could be the fault if a module does not respond to the diagnostic scan tool?
Multiple choice
Q21. A technician is diagnosing a vehicle with a braking systems fault. When he removes the filler cap to check the fluid level in the master cylinder reservoir, he notices that the rubber seal on the cap is swollen and has begun to disintegrate. What could be the problem?
A. Water in the brake fluid.
B. Petroleum-based lubricants in the fluid.
C. Fluid overheating.
D. Incorrect type of brake fluid.
Q22. A technician is diagnosing a vehicle that had both front brake hoses replaced 5000km's ago. An inspection reveals that the right front hose has ruptured. What could have been the cause of the fault?
A. Specification called for DOT 3 fluid, and DOT 4 fluid cause the failure.
B. Faulty brake hose caused the failure.
C. The brake hose was twisted and stressed too much when installed.
D. None of these answers are correct.
Q23. After replacing the vacuum booster, the brakes lock-up on a road test. What could be the problem?
A. The vacuum booster pushrod needs adjusting.
B. There is air trapped inside the brake lines.
C. Specification called for DOT 3 fluid, and DOT 4 fluid was used.
D. All of these answers are correct.
Q24. When the vehicle is road tested after replacement of an axle shaft, the ABS warning light illuminates. What could be the problem?
A. Need to perform an ABS speed sensor relearn procedure.
B. No tone ring fitted to the new axle shaft.
C. Need to count the teeth on the tone ring of the old axle and compare it to the new axle.
D. All of these answers are correct.
Fill in the gap about drum brake operation
Words: Brake, Force, Forward, Operation, Pressure, Shoe, Wedging
25. Drum brake _______________ is fairly simple. The most important feature contributing to the effectiveness of the braking force supplied by the drum brake is the brake shoe _______________ or force directed against the drum. With the vehicle moving in either the _______________ or reverse direction with the brakes on, the applied force of the brake _______________ pressing against the brake drum increasingly multiplies itself (called self-energizing) because the brake's anchor pin acts as a _______________ shoe stop and prohibits the brake shoe from its tendency to follow the movement of the rotating drum. The result is a _______________ action between the brake shoe and brake drum. The wedging action combined with the applied brake force creates a self-multiplied brake _______________.
Q26. Name the two [2] drum brake designs in commonly use.
Q27. Disc brakes offer four [4] major advantages over drum brakes. What are they?
Fill in the gap about disc brake operation
Words: Brakes, Caliper, Force, Pads, Pistons, Rotor, Squeezed
Q28. The friction elements are in the form of pads, which are _______________ or clamped about the edge of a rotating wheel. With automotive disc _______________, this wheel is a separate unit mounted inboard of the wheel and tire, called the rotor. The rotor is typically made of cast iron. Because the _______________ clamp against both sides of a rotor, both sides are machined smooth. The pads are attached to metal backings, which are actuated by _______________. The pistons are contained within a caliper assembly, which is a housing that wraps around the edge of the _______________. The caliper is mounted to the steering knuckle to stop it from rotating. The _______________ contains the pistons and related seals, springs, bleeder screws, and boots as well as the cylinder(s) and fluid passages necessary to _______________ the pads against the rotor.
Multiple choice
Q29. Parking brakes can be either __________ or foot operated.
A. Hand.
B. Electrical.
C. Vacuum.
D. All of these answers are incorrect.
True or False
Q30. The parking brake keeps a vehicle from rolling while it is parked.
Q31. The pedal or lever assembly is designed to latch into an applied position and is released by pulling a brake release handle or pushing a release button.
Multiple choice
Q32. The purpose of the master cylinder is to __________.
A. Generate the hydraulic pressure needed to apply the brake mechanisms.
B. Automatically pump the brakes during panic stops.
C. Supply mechanical force to the brake mechanisms.
D. All of these answers are correct.
Q33. What is a tandem master cylinder?
Fill in the gap about master cylinder operation
Words: Brake, Chamber, Piston, Port, Pressure, Spring
Q34. When the driver depresses the _______________ pedal, the pushrod pushes the piston forward. As it moves forward, the piston pushes the cup past the vent port. As soon as the vent _______________ is covered, fluid is trapped ahead of the cup. The fluid, which is under _______________, goes through the outlet lines to the wheel brake units to apply the brakes. When the driver releases the brake pedal, the return _______________ forces the piston back to its released position. As the _______________ moves back, it pulls away from the fluid faster than the fluid can flow back from the brake lines to the pressure _______________. This creates a low pressure ahead of the piston.
Q35. Identify three (3) electrical switches found in modern brake systems.
True or False
Q36. A metering valve delays front braking until the rears are applied?
Q37. A proportioning valve controls rear brake pressure, especially during gentle stops?
Multiple choice
Q38. The upward movement of the rear suspension opens the__________?
A. Residual pressure check valve.
B. Metering valve.
C. Height-sensing proportioning valve.
D. Pressure differential valve.
Q39. A proportioning valve reduces fluid pressure to __________?
A. The front brakes during initial brake [low pedal force] application.
B. The rear brakes during initial [low pedal force] brake application.
C. The front brakes during hard braking.
D. The rear brakes during hard braking.
Q40. The function of the pressure switch in the hydraulic control unit of the ABS is to __________?
A. Activate the ABS warning light.
B. Trigger the solenoids when pressure has exceeded pre-set limits.
C. Turn the booster pump off and on.
D. All of these answers are correct.
Q41. The anti-lock brake system can modulate the pressure to the brake as often as __________ times per second.
A. Five [5].
B. Fifteen [15].
C. Fifty [50].
D. Sixty [60].
Q42. When the ABS is activated when a wheel begins to lock, the brake pedal should __________.
A. Drop about 1-inch.
B. Should go from hard to spongy.
C. Make you feel a small bump followed by rapid pedal pulsations.
D. All of these answers are correct.
True or False
Q43. The exact operation of an antilock brake system depends on its design and manufacturer.
Q44. The ABS control module calculates the slip rate of the wheels and controls the brake fluid pressure to certain wheel brakes to reach the target slip rate. If the control module senses that a wheel is about to lock, based on input sensor data, it pulses the normally open inlet solenoid valve closed for that circuit.
Q45. Many vehicles have the Wheel Speed Sensors [WSS] built into the wheel bearing assembly and a worn wheel bearing can affect ABS operation.
Q46. Dirty or damaged wheel-speed sensors and damaged sensor wiring harnesses are leading triggers to turn on ABS warning lamps. Do not rush to condemn the ABS computer or hydraulic module before checking the speed sensors and tone wheels.
Q47. In a brake-by-wire system, the braking command of the brake pedal is electronically processed.
Q48. Explain the advantages of brake-by-wire?
True or False
Q49. In a true brake-by-wire system, the hydraulic system has been totally eliminated.
Q50. One of the obstacles to brake-by-wire systems has been providing enough clamping power on the rotor to safely stop the vehicle.
Q51. The Electronic Wedges Brake (EWB) system is designed to react to the speed of the wheels; as speed increases, so does the clamping pressure of the brakes. How does it do this?
Q52. The Electronic Wedges Brake (EWB) system relies on the vehicle's battery for power but what happens if the vehicle's battery fails.
Fill in the gap about road testing the vehicle for testing the braking system
Words: Absorber, Bearing, Braking, Misalignment, Pedal, Performance, Stops, Tyres, Unequal.
Q53. Test brakes at different speeds with both light and heavy _______________ pressure. Avoid locking the wheels and sliding the tyres on the roadway. There are external conditions that affect brake road-test _______________. Tyres having unequal contact and grip on the road cause _______________ braking.
Tyres must be equally inflated, and the tread pattern of right and left _______________ must be approximately equal. When the vehicle has unequal loading, the most heavily loaded wheels require more _______________ power than others and a heavily loaded vehicle requires more braking effort.
_______________ of the front end may cause the brakes to pull to one side. Also, a loose front-wheel _______________ could permit the disc to tilt and have spotty contact with brake shoe linings, causing pulsations when the brakes are applied. Faulty shock _______________ that do not prevent the car from bouncing on quick _______________ can give the erroneous impression that the brakes are too severe.
True or False
Q54. Road testing allows the brake technician to evaluate brake system performance under actual driving conditions. Whenever practical, perform the road test before beginning any work on the brake system.
Multiple choice
Q55. When the brakes are applied during a road test, a clicking noise usually indicates play or hardware failure in the attachments of the __________ or __________.
A. Disc or rotor.
B. Pad or shoe.
C. Caliper or mountings.
D. All of these answers are correct.
True or False
Q56. Grinding noises on application on a road test can mean metal-to-metal contact, either from badly worn pads or shoes, or from a serious misalignment of the caliper, rotor, wheel cylinder, or backing plate.
Multiple choice
57. The owner of a vehicle complains the car is hard to stop. The technician doing the diagnosis starts by pumping the brake pedal several times with the engine off, and then starts the engine while holding firm pressure on the brake pedal. The pedal falls away slightly, and less pressure is needed to maintain the pedal in any position. This test proves that ______.
A. The master cylinder is working.
B. The vacuum booster is working.
C. The front brakes require adjustment.
D. There is air in the hydraulic system.
Q58. Describe how to test a parking brake.
Multiple choice
Q59. A technician is checking a car with an owner's complaint of poor braking performance and a low brake pedal. The master cylinder is full, and there are no signs of fluid leaks in the brake system. He tests the hydraulic circuit by holding firm pressure on the brake pedal, the pedal slowly drops. What could be the problem?
A. Internally leaking master cylinder.
B. Internally leaking caliper.
C. Leaking wheel cylinder.
D. Frozen pressure differential valve.
True or False
Q60. A DTC is a numeric identifier for a fault condition identified by the ABS system's internal diagnostic information.
Q61. When the ignition switch is turned to the start position during a test, only the red warning lights should turn on, even if the vehicle has ABS.
Fill in the gap about braking system diagnostic equipment
Words: ABS, Braking, CAN, Capabilities, Dangerous, Equipment, Functional, Important, Lead, Misuse, Scan, Sensor, Solenoid, Tester, Trouble
Q62. Different vehicle manufacturers provide _______________ test and _______________ tools with varying capabilities. Some _______________ are used simply to access the digital _______________ codes.
Others may also provide _______________ test modes for checking wheel _______________ circuits, pump operation, _______________ testing, and so forth. Current ABSs are tied to the _______________ bus and do not require special testers. It is _______________ to research the _______________ and proper use of the test equipment the vehicle manufacturer provides. _______________ of test equipment can be _______________. For example, connecting test _______________ during a test drive that is not designed for this use may _______________ to loss of _______________ ability.
Multiple choice
Q63. What does a brake fluid tester test?
A. The age of the brake fluid.
B. The mileage of the brake fluid.
C. The moisture content in the brake fluid.
D. All of these answers are correct.
Q64. Explain how a brake fluid tester operates?
Multiple choice
Q65. A brake performance tester is testing what?
A. Tests service and emergency brake efficiency.
B. Tests braking effort between front and rear brakes.
C. Tests suspension movement.
D. All of these answers are correct.
Q66. Describe the four (4) steps to operate the brake performance tester?
Fill in the gap about documenting you're diagnostic finding on the job card
Words: Clear, Defective, Diagnostic, Documentation, Equipment, Found, Job, Multimeter, Operations, Problem, Sensor, Technician, Trouble, Write.
Q67. 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 found 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 C0210/33 R/H/R speed sensor diagnostic _______________ code.
Used a digital _______________ to determine a wheel speed _______________ wire was defective.
List what parts or service _______________ were performed. For example: Replaced the wheel speed wire on R/H/R wheel. Used a scan tool to _______________ the diagnostic trouble codes and verify that the system operated correctly.
Q68. Why is it very important that the Job Card is completed correctly?
Q69. What are all the ADR names and numbers for which all brakes hydraulic system for all passenger vehicles?
Q70. ADR 31.2.3 relates to the "Service Brake Failure Indicator Lamp". What is the requirement in regards to how many service brake failure indicator lamp should the vehicle have?
Q71. For vehicle fitted with a "Split Service Brake System", the indicator lamp must activate whenever any of the ___________ conditions occur whilst the ignition switch is in the "engine on" position. What are those conditions?
Q72. Braking and braking performance tests are based on?
Q73. If you were to carry out any "Modification" to the vehicles brake type or braking system, what is required to get the modified vehicle braking system approved?
Assessment Task 2 - Practical Assessment
Task 1: Analyse and evaluate faults in light vehicle braking systems
Upon completion of this task, you should be able to demonstrate how to analyse and evaluate faults in light vehicle braking systems.
Student instructions:
You MUST analyse and evaluate faults in light vehicle braking systems in three (3) different vehicles that you have been given to by your Trainer/Assessor.
You MUST analyse and evaluate a fault in the:
Hydraulic braking system of a light vehicle
Mechanical braking system of a different light vehicle
Electronic braking system of a third light vehicle.
Tools and Materials
Three (3) different light vehicles
Workshop manuals (WSM) for vehicles
Scan tool
Digital Multimeter
Brake fluid tester
Micrometer
Vernier caliper
Workshop hand tools
Inspection light
Protective Clothing:
PPE
Safety goggles or glasses with side shields
Steel-toed shoes
Vehicle protection
Trainer / Assessor Notes:
1. The Student MUST analyse and evaluate faults in light vehicle braking systems in three (3) different vehicles that you have given the Student.
The student MUST analyse and evaluate a fault in the:
Hydraulic braking system of a light vehicle
Mechanical braking system of a different light vehicle
Electronic braking system of a third light vehicle
2. Trainer / Assessor MUST verify performance evidence through questioning on skills and knowledge to ensure correct interpretation and application.
3. Observe the student performing each step in the practical observation checklist.
Job Card 1: Analyse and evaluate faults in light vehicle braking systems
Upon completion of this task, you should be able to demonstrate how to analyse and evaluate hydraulic braking system faults in light vehicle braking systems.
Tools and Materials
One (1) light vehicle with hydraulic braking system
Workshop manuals (WSM) for vehicles
Scan tool
Digital Multimeter
Brake fluid tester
Micrometer
Vernier caliper
Workshop hand tools
Inspection light
Protective Clothing:
PPE
Safety goggles or glasses with side shields
Steel-toed shoes
Vehicle protection
Customer Concern:
The customer is concerned that the rear brakes are sensitive under braking and sometimes lock-up.
1. Understand and Verify the Customer's Concern: The first part of this step is to obtain as much information as possible from the customer. Are there aftermarket accessories on the vehicle? When does the condition occur? Where does the condition occur? How long does the condition last? How often does the condition occur?
2. Vehicle Operating as Designed: This condition exists when the vehicle is found to operate normally. The condition described by the customer may be normal. Compare with another like vehicle that is operating normally under the same conditions described by the customer.
3. Preliminary Checks: Conduct a thorough visual inspection. Review the service history. Detect unusual sounds or odours.
4. Check for related Bulletins, Recalls and Preliminary Information.
5. Control Module Communication and DTC Check: Using a scan tool, perform the Vehicle DTC Information function and verify that all vehicle control module communicates with the scan tool.
Record on the Job card the following information:
Any control module that is not communicating
Any DTC, including symptom byte, and the control module that has set the DTC.
6. Before road testing the vehicle to confirm proper operation, carry out a preliminary inspection as per the WSM.
7. As per the WSM, road test the vehicle to confirm proper operation.
8. Safety position the vehicle on the hoist and raise the vehicle to the desired working height and inspect the braking system.
9. Inspect the hydraulic brake fluid as per the WSM.
10. What is the recommended brake fluid for this vehicle?
What is the brake fluid boiling point for this vehicle?
11. What is the difference between the brake fluid in the vehicle and the boiling point of the vehicle recommended brake fluid?
12. Inspect the hydraulic brake system as per the WSM.
13. Inspect the hydraulic brake system function as per the WSM.
14. Bleed the hydraulic brake system to observe for the presence of air in the system and to observe for an unrestricted and even flow of brake fluid per axle during the bleeding procedure.
Was there any air in the system?
Note your findings and the brake fluid used on the back of the Job Card.
15. Was the flow of brake fluid unrestricted and even per axle during the bleeding procedure?
16. Continue to isolate the problem by testing. Narrow down the probable causes of the problem by following the Pinpoint test as specified in the WSM.
17. Document your test result on the back of the Job Card and compare them to the vehicle WSM.
18. What is the fault with the hydraulic braking system?
19. Analyse the options for the customer, by taking into account the operating conditions the vehicle is being used, regulatory requirements, Australian Design Rules, and financial implications to the customer.
20. Report the fault. You must report your findings to the customer filling in the Recommendations for the repair of the vehicle on the back of the Job Card.
Job Card 2: Analyse and evaluate faults in light vehicle braking systems
Upon completion of this task, you should be able to demonstrate how to analyse and evaluate mechanical braking system faults in light vehicle braking systems.
Tools and Materials
One (1) light vehicle
Workshop manuals (WSM) for vehicle
Micrometer
Vernier caliper
Workshop hand tools
Inspection light
Protective Clothing:
PPE
Safety goggles or glasses with side shields
Steel-toed shoes
Vehicle protection
Customer Concern: The customer is concerned that the brakes drag when driving on hot days.
1. Understand and Verify the Customer's Concern: The first part of this step is to obtain as much information as possible from the customer. Are there aftermarket accessories on the vehicle? When does the condition occur? Where does the condition occur? How long does the condition last? How often does the condition occur?
2. Vehicle Operating as Designed: This condition exists when the vehicle is found to operate normally. The condition described by the customer may be normal. Compare with another like vehicle that is operating normally under the same conditions described by the customer. Note your findings on the back of the Job Card.
3. Preliminary Checks: Conduct a thorough visual inspection. Review the service history. Detect unusual sounds or odours.
4. Check for related Bulletins, Recalls and Preliminary Information.
5. Control Module Communication and DTC Check: Using a scan tool, perform the Vehicle DTC Information function and verify that all vehicle control module communicates with the scan tool.
Record on the Job card the following information:
Any control module that is not communicating
Any DTC, including symptom byte, and the control module that has set the DTC.
6. Before road testing the vehicle to confirm proper operation, carry out a preliminary inspection as per the WSM.
7. As per the WSM, road test the vehicle to confirm proper operation.
8. From the WSM, what are the systems/components that could cause brake drag?
9. If you need to raise the vehicle, make sure that you safety position the vehicle on the hoist and raise the vehicle to the desired working height.
10. Inspect the mechanical brake systems/components that you identified in STEP 8, as per the WSM.
11. Continue to isolate the problem by testing. Narrow down the probable causes of the problem by following the Pinpoint test as specified in the WSM.
12. Document your test result on the back of the Job Card and compare them to the vehicle WSM.
13. What is the fault with the mechanical braking system?
14. Analyse the options for the customer, by taking into account the operating conditions the vehicle is being used, regulatory requirements, Australian Design Rules, and financial implications to the customer.
15. Report the fault. You must report your findings to the customer filling in the Recommendations for the repair of the vehicle on the back of the Job Card.
Job Card 3: Analyse and evaluate faults in light vehicle braking systems
Upon completion of this task, you should be able to demonstrate how to analyse and evaluate electrical braking system faults in light vehicle braking systems.
Tools and Materials
One (1) light vehicle
Workshop manuals (WSM) for vehicle
Scan tool
Digital Multimeter
Micrometer
Vernier caliper
Workshop hand tools
Inspection light
Protective Clothing:
PPE
Safety goggles or glasses with side shields
Steel-toed shoes
Vehicle protection
Customer Concern: The customer is concerned that the ABS light is on.
1. Understand and Verify the Customer's Concern: The first part of this step is to obtain as much information as possible from the customer. Are there aftermarket accessories on the vehicle? When does the condition occur? Where does the condition occur? How long does the condition last? How often does the condition occur? Note your findings on the back of the Job Card.
2. Vehicle Operating as Designed: This condition exists when the vehicle is found to operate normally. The condition described by the customer may be normal. Compare with another like vehicle that is operating normally under the same conditions described by the customer. Note your findings on the back of the Job Card.
3. Preliminary Checks: Conduct a thorough visual inspection. Review the service history. Detect unusual sounds or odours.
4. Check for related Bulletins, Recalls and Preliminary Information. Note your findings on the back of the Job Card.
5. Control Module Communication and DTC Check: Using a scan tool, perform the Vehicle DTC Information function and verify that all vehicle control module communicates with the scan tool.
Record on the Job card the following information:
Any control module that is not communicating
Any DTC, including symptom byte, and the control module that has set the DTC.
6. For the DTC logged, describe how the system operates below
7. What are the conditions for 'Running' the DTC?
8. What are the conditions for 'Setting' the DTC?
9. List the possible causes that could cause the above DTC to log?
10. If you need to raise the vehicle, make sure that you safety position the vehicle on the hoist and raise the vehicle to the desired working height.
11. Continue to isolate the problem by testing. Narrow down the probable causes of the problem by following the Pinpoint test as specified in the WSM. Note your findings on the back of the Job Card
12. Document your test result on the back of the Job Card and compare them to the vehicle WSM.
13. What is the fault with the mechanical braking system? Note your findings on the back of the Job Card.
14. Analyse the options for the customer, by taking into account the operating conditions the vehicle is being used, regulatory requirements, Australian Design Rules, and financial implications to the customer. Note your findings on the back of the Job Card
15. Report the fault. You must report your findings to the customer filling in the Recommendations for the repair of the vehicle on the back of the Job Card.
Attachment:- Analyse and Evaluate Faults in Light Vehicle Braking Systems Assignment File.rar