General Electrical Systems - Jones & Bartlett...
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General Electrical Systems © 2012 Jones & Bartlett Learning General Electrical Systems 1 Student/intern information: Name Date Class Vehicle used for this activity: Year Make Model Odometer VIN Learning Objective/Task (General Electrical Systems) 2007 NATEF Reference Number 2007 NATEF Priority Level • Read and interpret electrical/electronic circuits using wiring diagrams. 5A1 P-1 • Check continuity in electrical/electronic circuits using appropriate test equipment. 5A2 P-1 • Check applied voltages, circuit voltages, and voltage drops in electrical/electronic circuits using appropriate test equipment. 5A3 P-1 • Check current flow in electrical/electronic circuits and components using appropriate test equipment. 5A4 P-1 • Check resistance in electrical/electronic circuits and components using appropriate test equipment. 5A5 P-1 • Locate shorts, grounds, and opens in electrical/electronic circuits. 5A6 P-1 • Identify parasitic (key-off) battery drain problems; perform tests; determine needed action. 5A7 P-1 • Inspect and test fusible links, circuit breakers, relays, solenoids, and fuses; replace as needed. 5A8 P-1 • Inspect and test spike suppression devices; replace as needed. 5A9 P-3 • Check frequency and pulse width signal in electrical/ electronic circuits using appropriate test equipment. 5A10 P-3 Recommended Resource Materials Materials Required • CDX Automotive program • CDX eTextbook • Technical service bulletins, shop manuals, and any other information applicable to the specific vehicle or components you are working on • Class notes • Vehicle or simulator with electrical circuit concerns • Vehicle manufacturer’s workshop manual including schematic wiring diagrams • Digital volt ohm meter (DVOM), ammeter, current clamp, graphing multimeter (GMM), or digital stor- age oscilloscope (DSO) • Electrical spare parts, including fuses, circuit breakers, relays, and solenoids • Manufacturer-specific tools depending on the concern • Vehicle lifting equipment, if applicable Time off Time on Total time Time off Time on Total time
Transcript of General Electrical Systems - Jones & Bartlett...
General Electrical Systems
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General Electrical Systems 1
Student/intern information:
Name Date Class
Vehicle used for this activity:
Year Make Model
Odometer VIN
Learning Objective/Task (General Electrical Systems)
2007 NATEF Reference Number
2007 NATEF Priority Level
• Read and interpret electrical/electronic circuits using wiring diagrams.
5A1 P-1
• Check continuity in electrical/electronic circuits using appropriate test equipment.
5A2 P-1
• Check applied voltages, circuit voltages, and voltage drops in electrical/electronic circuits using appropriate test equipment.
5A3 P-1
• Check current flow in electrical/electronic circuits and components using appropriate test equipment.
5A4 P-1
• Check resistance in electrical/electronic circuits and components using appropriate test equipment.
5A5 P-1
• Locate shorts, grounds, and opens in electrical/electronic circuits.
5A6 P-1
• Identify parasitic (key-off) battery drain problems; perform tests; determine needed action.
5A7 P-1
• Inspect and test fusible links, circuit breakers, relays, solenoids, and fuses; replace as needed.
5A8 P-1
• Inspect and test spike suppression devices; replace as needed.
5A9 P-3
• Check frequency and pulse width signal in electrical/ electronic circuits using appropriate test equipment.
5A10 P-3
Recommended Resource Materials Materials Required
• CDX Automotive program
• CDX eTextbook
• Technical service bulletins, shop manuals, and any other information applicable to the specific vehicle or components you are working on
• Class notes
• Vehicle or simulator with electrical circuit concerns
• Vehicle manufacturer’s workshop manual including schematic wiring diagrams
• Digital volt ohm meter (DVOM), ammeter, current clamp, graphing multimeter (GMM), or digital stor-age oscilloscope (DSO)
• Electrical spare parts, including fuses, circuit breakers, relays, and solenoids
• Manufacturer-specific tools depending on the concern
• Vehicle lifting equipment, if applicable
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Some Safety Issues to Consider• Activities require you to measure electrical values. Always ensure that the instructor/supervisor checks
test instrument connections prior to connecting power or taking measurements. High current flows can be dangerous; avoid accidental short circuits or grounding a battery’s positive connections.
• Activities may require test driving the vehicle on the school grounds or on a hoist, both of which carry severe risks. Attempt this task only with full permission from your supervisor/instructor, and follow all the guidelines exactly.
• Lifting equipment such as vehicle jacks and stands, vehicle hoists, and engine hoists are important tools that increase productivity and make the job easier. However, they can also cause severe injury or death if used improperly. Make sure you follow the manufacturer’s operation procedures. Also make sure you have your supervisor/instructor’s permission to use any particular type of lifting equipment.
• Comply with personal and environmental safety practices associated with clothing; eye protection; hand tools; power equipment; proper ventilation; and the handling, storage, and disposal of chemicals/materials in accordance with federal, state, and local regulations.
• Always wear the correct protective eyewear and clothing and use the appropriate safety equipment, as well as fender covers, seat protectors, and floor mat protectors.
• Make sure you understand and observe all legislative and personal safety procedures when carrying out practical assignments. If you are unsure of what these are, ask your supervisor/instructor.
Performance Standard0—No exposure: No information or practice provided during the program; complete training required1—Exposure only: General information provided with no practice time; close supervision needed; additional
training required2—Limited practice: Has practiced job during training program; additional training required to develop skill3—Moderately skilled: Has performed job independently during training program; limited additional training
may be required4—Skilled: Can perform job independently with no additional training
�TASK Read and interpret electrical/electronic circuits using wiring diagrams. 5A1
NOTE�This tasksheet will require the use of a vehicle or simulator. Ask your instructor which vehicle or simulator you are to use.
1. Research how to read and interpret electrical/electronic circuits using wiring diagrams in the appropriate service information for the vehicle you are working on.
2. Select a circuit from the wiring diagram and trace the circuit using the wiring diagram. Determine the color codes used for the circuit and the location of connectors, plugs, and components on the vehicle. List your findings.
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3. Inspect the wiring on the vehicle and confirm that the color codes, plugs and connectors, and components are in the correct locations and are wired according to the diagram. Note your findings.
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4. Determine any necessary action(s).
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5. Return the vehicle to its beginning condition, and return any tools you used to their proper locations.
6. Discuss the findings with the instructor.
Performance Rating2007 NATEF Reference Number: 5A1
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�TASK Check continuity in electrical/electronic circuits using appropriate test equipment. 5A2
NOTE�This tasksheet will require the use of a vehicle or simulator with an electrical fault. Ask your instructor which vehicle or simulator you are to use.
1. Prepare the DVOM to measure continuity.a. What are the steps necessary in preparing your DVOM to measure continuity?
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b. Explain how to connect the meter leads. __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________
c. What readings would you expect the DVOM to indicate when the circuit has: i. Good continuity: _________________________________________________________________ ii. Poor continuity: _________________________________________________________________
2. Using the appropriate service information, check for circuit continuity in electrical/electronic circuits. Ask your instructor/supervisor for a vehicle and circuits to check continuity.
a. Circuit 1: Are the results within the manufacturer’s specifications? Yes: _________ No: _________ If no, what are the recommendations? _______________________________________________ __________________________________________________________________________________ __________________________________________________________________________________
b. Circuit 2: Are the results within the manufacturer’s specifications? Yes: _________ No: _________ If no, what are the recommendations? _______________________________________________ __________________________________________________________________________________ __________________________________________________________________________________
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c. Circuit 3: Are the results within the manufacturer’s specifications? Yes: _________ No: _________ If no, what are the recommendations? _______________________________________________ __________________________________________________________________________________ __________________________________________________________________________________
3. Return the vehicle to its beginning condition, and return any tools you used to their proper locations.
4. Discuss the findings with the instructor.
Performance Rating2007 NATEF Reference Number: 5A2
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�TASK Check applied voltages, circuit voltages, and voltage drops in electrical/electronic circuits using appropriate test equipment. 5A3
NOTE�This tasksheet will require the use of a vehicle or simulator with an electrical fault. Ask your instructor which vehicle or simulator you are to use.
1. Using the appropriate service information for the vehicle you are working on, research how to check applied voltages, circuit voltages, and voltage drops in electrical/electronic circuits. List the circuits, including the lead connections.
a. Applied voltages: __________________________________________________________________________________ __________________________________________________________________________________
b. Circuit voltages: __________________________________________________________________________________ __________________________________________________________________________________
c. Voltage drops: __________________________________________________________________________________ __________________________________________________________________________________
2. Prepare the DVOM to measure DC volts.a. What are the steps necessary in preparing your DVOM to measure voltage?
__________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________
3. Have your supervisor/instructor verify your research.Supervisor/instructor’s initials: _____________
4. Using the appropriate service information, check applied voltages, circuit voltages, and voltage drops in electrical/electronic circuits. Ask your instructor/supervisor for a vehicle and circuits to check.
a. Applied voltages: List the circuit being checked. i. ________________________________________________________________________________
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c. Circuit 3: Are the results within the manufacturer’s specifications? Yes: _________ No: _________ If no, what are the recommendations? _______________________________________________ __________________________________________________________________________________ __________________________________________________________________________________
3. Return the vehicle to its beginning condition, and return any tools you used to their proper locations.
4. Discuss the findings with the instructor.
2007 NATEF Reference Number: 5A2
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�TASK Check applied voltages, circuit voltages, and voltage drops in electrical/electronic circuits using appropriate test equipment.
1. Using the appropriate service information for the vehicle you are working on, research how to check applied voltages, circuit voltages, and voltage drops in electrical/electronic circuits. List the circuits, including the lead connections.
a. Applied voltages: __________________________________________________________________________________ __________________________________________________________________________________
b. Circuit voltages: __________________________________________________________________________________ __________________________________________________________________________________
c. Voltage drops: __________________________________________________________________________________ __________________________________________________________________________________
2. Prepare the DVOM to measure DC volts.a. What are the steps necessary in preparing your DVOM to measure voltage?
__________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________
3. Have your supervisor/instructor verify your research.Supervisor/instructor’s initials: _____________
4. Using the appropriate service information, check applied voltages, circuit voltages, and voltage drops in electrical/electronic circuits. Ask your instructor/supervisor for a vehicle and circuits to check.
a. Applied voltages: List the circuit being checked. i. ________________________________________________________________________________
ii. Are the results within the manufacturer’s specifications? Yes: _________ No: _________ If no, what are the recommendations? _______________________________________ __________________________________________________________________________ __________________________________________________________________________ __________________________________________________________________________
b. Circuit voltages: List the circuit being checked. i. ________________________________________________________________________________ ii. Are the results within the manufacturer’s specifications?
Yes: _________ No: _________ If no, what are the recommendations? _______________________________________ __________________________________________________________________________ __________________________________________________________________________ __________________________________________________________________________
c. Voltage drops: List the circuit being checked. i. ________________________________________________________________________________ ii. Are the results within the manufacturer’s specifications?
Yes: _________ No: _________ If no, what are the recommendations? _______________________________________ __________________________________________________________________________ __________________________________________________________________________ __________________________________________________________________________
5. Return the vehicle to its beginning condition, and return any tools you used to their proper locations.
6. Discuss the findings with the instructor.
Performance Rating2007 NATEF Reference Number: 5A3
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�TASK Check current flow in electrical/electronic circuits and components using appropriate test equipment. 5A4
NOTE�This tasksheet will require the use of a vehicle or simulator with an electrical fault. Ask your instructor which vehicle or simulator you are to use. Be sure to follow the correct steps for connecting your DVOM or ammeter to check for amperage/current flow. Have your supervisor/instructor check your connections. Improper connection of the DVOM may damage your meter.
1. Using the appropriate service information for the vehicle you are working on, research how to check applied voltages, circuit voltages, and voltage drops in electrical/electronic circuits. List the circuits, including the lead connections.
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a. DVOM current measurements: Draw a diagram showing the lead connection and circuit.
b. DVOM with inductive clamp current measurements: Draw a diagram showing the lead connection
and circuit.
2. Prepare the DVOM to measure DC current.a. What are the steps necessary in preparing your DVOM to measure current?
__________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________
3. Have your supervisor/instructor verify your research.Supervisor/instructor’s initials: _____________
4. Using the appropriate service information, check current flow in electrical/electronic circuits and components. Ask your instructor/supervisor for a vehicle and circuits to check.
Caution: Ensure that the meter is connected correctly when measuring current draw. Damage may occur to circuits and the test equipment if connections are made incorrectly.
a. List the circuit being checked. i. ________________________________________________________________________________ ii. Are the results within the manufacturer’s specifications?
Yes: _________ No: _________ If no, what are the recommendations? _______________________________________ __________________________________________________________________________ __________________________________________________________________________
b. List the circuit being checked. i. ________________________________________________________________________________ ii. Are the results within the manufacturer’s specifications?
Yes: _________ No: _________ If no, what are the recommendations? _______________________________________ __________________________________________________________________________ __________________________________________________________________________
c. List the circuit being checked. i. ________________________________________________________________________________ ii. Are the results within the manufacturer’s specifications?
Yes: _________ No: _________ If no, what are the recommendations? _______________________________________ __________________________________________________________________________ __________________________________________________________________________
5. Return the vehicle to its beginning condition, and return any tools you used to their proper locations.
6. Discuss the findings with the instructor.
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Performance Rating2007 NATEF Reference Number: 5A4
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�TASK Check resistance in electrical/electronic circuits and components using appropriate test equipment. 5A5
NOTE�This tasksheet will require the use of a vehicle or simulator with an electrical fault. Ask your instructor which vehicle or simulator you are to use.
1. Using the appropriate service information for the vehicle you are working on, research how to check re-sistance in electrical/electronic circuits and components. List the circuits, including the lead connections.
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a. DVOM resistance measurements: Draw a diagram showing the lead connection and circuit.
2. Prepare the DVOM to measure resistance.a. What are the steps necessary in preparing your DVOM to measure resistance?
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3. Explain why resistance measurements should only be undertaken without power connected to the circuit under test.
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4. Have your supervisor/instructor verify your research.Supervisor/instructor’s initials: _____________
5. Using the appropriate service information, check resistance in electrical/electronic circuits and components. Ask your instructor/supervisor for a vehicle and circuits to check.
Caution: Ensure that the meter is correctly connected and no power is applied to the circuit under test when measuring resistance.
a. List the circuit/component being checked. i. ________________________________________________________________________________ ii. Are the results within the manufacturer’s specifications?
Yes: _________ No: _________ If no, what are the recommendations? _______________________________________ __________________________________________________________________________ __________________________________________________________________________
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b. List the circuit/component being checked. i. ________________________________________________________________________________ ii. Are the results within the manufacturer’s specifications?
Yes: _________ No: _________ If no, what are the recommendations? _______________________________________ __________________________________________________________________________ __________________________________________________________________________ __________________________________________________________________________
c. List the circuit/component being checked. i. ________________________________________________________________________________ ii. Are the results within the manufacturer’s specifications?
Yes: _________ No: _________ If no, what are the recommendations? _______________________________________ __________________________________________________________________________ __________________________________________________________________________ __________________________________________________________________________
6. Return the vehicle to its beginning condition, and return any tools you used to their proper locations.
7. Discuss the findings with the instructor.
Performance Rating2007 NATEF Reference Number: 5A5
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�TASK Locate shorts, grounds, and opens in electrical/electronic circuits. 5A6
NOTE�This tasksheet will require the use of a vehicle or simulator with an electrical fault. Ask your instructor which vehicle or simulator you are to use.
1. What is the complaint or concern for this tasksheet?
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2. Identify or isolate the circuit or circuits involved.a. What circuit component(s) is (are) not working as designed?
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3. Using the appropriate service information, locate the wiring diagram for the circuit(s) you identified in Step 2.
4. Determine what type of circuit fault is present with this vehicle/simulator.a. List your findings.
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b. List the circuit/component being checked. i. ________________________________________________________________________________ ii. Are the results within the manufacturer’s specifications?
Yes: _________ No: _________ If no, what are the recommendations? _______________________________________ __________________________________________________________________________ __________________________________________________________________________ __________________________________________________________________________
c. List the circuit/component being checked. i. ________________________________________________________________________________ ii. Are the results within the manufacturer’s specifications?
Yes: _________ No: _________ If no, what are the recommendations? _______________________________________ __________________________________________________________________________ __________________________________________________________________________ __________________________________________________________________________
6. Return the vehicle to its beginning condition, and return any tools you used to their proper locations.
7. Discuss the findings with the instructor.
2007 NATEF Reference Number: 5A5
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�TASK Locate shorts, grounds, and opens in electrical/electronic circuits.
1. What is the complaint or concern for this tasksheet?
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2. Identify or isolate the circuit or circuits involved.a. What circuit component(s) is (are) not working as designed?
__________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________
3. Using the appropriate service information, locate the wiring diagram for the circuit(s) you identified in Step 2.
4. Determine what type of circuit fault is present with this vehicle/simulator.a. List your findings.
__________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________
5. Return the vehicle to its beginning condition, and return any tools you used to their proper locations.
6. Discuss the findings with the instructor.
Performance Rating2007 NATEF Reference Number: 5A6
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�TASK Identify parasitic (key-off) battery drain problems; perform tests; determine needed action. 5A7
NOTE�This tasksheet will require the use of a vehicle or simulator with an electrical fault. Ask your instructor which vehicle or simulator you are to use. Be sure to follow the correct steps for connecting your DVOM to check for amperage/current flow. Have your supervisor/instructor check your connections. Improper connection of the DVOM may damage your meter.
1. Using the appropriate service information, research key-off battery drain (parasitic drain) checks.
2. Determine the maximum key-off battery drain (parasitic drain) for the vehicle/simulator that has been assigned to you.
a. What is the maximum drain? ____________________________ mA
3. List the appropriate steps to check for key-off battery drain (parasitic drain) for the vehicle or simulator that has been assigned to you.
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4. Using the steps listed, check the key-off battery drain (parasitic drain) for the vehicle/simulator that has been assigned to you.
a. What is the maximum drain? ____________________________ mA
b. Is this reading within the specifications determined in Step 2? Yes: _________ No: _________
5. If the reading is more than the allowable maximum drain, determine what is causing the excessive drain. a. List any item(s) that you found at fault.
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6. Use the appropriate service procedures to determine the necessary repair(s). List any repairs.
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7. Return the vehicle to its beginning condition, and return any tools you used to their proper locations.
8. Discuss the findings with the instructor.
Performance Rating2007 NATEF Reference Number: 5A7
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�TASK Inspect and test fusible links, circuit breakers, relays, solenoids, and fuses; replace as needed. 5A8
NOTE�This tasksheet will require the use of a vehicle or simulator with an electrical fault. Ask your instructor which vehicle or simulator you are to use.
1. Using the appropriate service information, locate the fuse panel(s), circuit breakers, fusible links, relays, and solenoids for the vehicle/simulator you are assigned to.
a. List the fuse panel, circuit breaker, fusible link, relay, and solenoid locations for this vehicle/simulator.
__________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________
2. Determine and list any circuit protection devices that are defective (open).
NB: Circuit protection devices do not normally wear out. If a circuit protection device is found to be faulty, too much current was/is present. You should determine the reason for the fault.
__________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________
3. What is the rating (size) of the circuit protection device for this circuit? __________________________________________________________________________________________
4. Is the correct size installed? Yes: _________ No: _________
5. Determine the cause for the circuit protection device to fail. List your findings. __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________
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6. Use the appropriate service procedures to determine the necessary repair(s). List any repairs.
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7. Return the vehicle to its beginning condition, and return any tools you used to their proper locations.
8. Discuss the findings with the instructor.
2007 NATEF Reference Number: 5A7
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�TASK Inspect and test fusible links, circuit breakers, relays, solenoids, and fuses; replace as needed.
1. Using the appropriate service information, locate the fuse panel(s), circuit breakers, fusible links, relays, and solenoids for the vehicle/simulator you are assigned to.
a. List the fuse panel, circuit breaker, fusible link, relay, and solenoid locations for this vehicle/simulator.
__________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________
2. Determine and list any circuit protection devices that are defective (open).
NB: Circuit protection devices do not normally wear out. If a circuit protection device is found to be faulty, too much current was/is present. You should determine the reason for the fault.
__________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________
3. What is the rating (size) of the circuit protection device for this circuit? __________________________________________________________________________________________
4. Is the correct size installed? Yes: _________ No: _________
5. Determine the cause for the circuit protection device to fail. List your findings. __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________
6. Determine and list any relay or solenoids that are defective. __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________
7. Determine the cause for the relay or solenoid to fail. List your findings. __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________
8. Return the vehicle to its beginning condition, and return any tools you used to their proper locations.
9. Discuss the findings with the instructor.
Performance Rating2007 NATEF Reference Number: 5A8
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�TASK Inspect and test spike suppression devices; replace as needed. 5A9
NOTE�This tasksheet will require the use of a vehicle or simulator with an electrical fault. Ask your instructor which vehicle or simulator you are to use.
1. Using the appropriate service information for the vehicle/simulator you are working on, research how to inspect and test spike suppression devices.
a. List the types of spike suppression used on the vehicle/simulator. __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________
b. What test would be used for each type of suppression device? __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________
2. Have your supervisor/instructor verify your research.Supervisor/instructor’s initials: _____________
3. Test the suppression devices. List your findings.
NOTE�Suppression devices do not normally wear out. If a suppression device is found to be faulty, you should determine the reason for the fault.
__________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________
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4. Determine any necessary action(s). __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________
5. Return the vehicle to its beginning condition, and return any tools you used to their proper locations.
6. Discuss the findings with the instructor.
Performance Rating2007 NATEF Reference Number: 5A9
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�TASK Check frequency and pulse width signal in electrical/electronic circuits using appropriate test equipment. 5A10
NOTE�This tasksheet will require the use of a vehicle or simulator with an electrical fault. Ask your instructor which vehicle or simulator you are to use.
1. Prepare the vehicle and/or circuit for the tests to be carried out.
2. Using the appropriate service manual, research the correct procedures and list the steps. __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________
3. Carry out the tests using a graphing multimeter (GMM) or digital storage oscilloscope (DSO). The tests should include:
• Frequency data • Pulse width• Output signal
a. What are the frequency and pulse width? Frequency: ______________ Pulse width: ______________
b. Is this within the manufacturer’s specifications? Yes: _________ No: _________
c. List your findings. __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________
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4. Determine any necessary action(s). __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________
5. Return the vehicle to its beginning condition, and return any tools you used to their proper locations.
6. Discuss the findings with the instructor.
2007 NATEF Reference Number: 5A9
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�TASK Check frequency and pulse width signal in electrical/electronic circuits using appropriate test equipment.
1. Prepare the vehicle and/or circuit for the tests to be carried out.
2. Using the appropriate service manual, research the correct procedures and list the steps. __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________
3. Carry out the tests using a graphing multimeter (GMM) or digital storage oscilloscope (DSO). The tests should include:
• Frequency data • Pulse width• Output signal
a. What are the frequency and pulse width? Frequency: ______________ Pulse width: ______________
b. Is this within the manufacturer’s specifications? Yes: _________ No: _________
c. List your findings. __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________
4. Determine any necessary action(s). __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________
5. Return the vehicle to its beginning condition, and return any tools you used to their proper locations.
6. Discuss the findings with the instructor.
Performance Rating2007 NATEF Reference Number: 5A10
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