a systems approach
DESCRIPTION
Automotive Technology. A Systems Approach. PowerPoint® Presentation Prepared by René Green. Chapter 5. Diagnostic Equipment. Diagnostic Equipment. Chapter Overview - PowerPoint PPT PresentationTRANSCRIPT
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A Systems Approach
PowerPoint® PresentationPrepared byRené Green
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Chapter 5
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Chapter Overview This chapter covers the most common diagnostic tools
used on yesterday's and today's vehicles. Technicians need to know how to conduct tests with the latest testers, as well as be able to conduct tests with the most basic of testers.
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Chapter Objectives Explain the basic principles of electricity. Diagnose electrical problems by logic and
symptom description. Perform troubleshooting procedures using
meters, test lights, and jumper wires. Explain the proper use of a logic probe. Describe what is displayed on an oscilloscope.
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Explain the proper use of a Digital Storage Oscilloscope.
Explain basic infrared analyzer operation. Describe the major test capabilities of an engine
analyzer. Name the diagnostic tools and equipment
commonly used in vehicle repair work. Describe the basic applications and operation of
these tools.
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Atom• Nucleus
– Protons– Neutrons– Electrons
Electrical Fundamentals Flow of Electricity
Energy sources Chemical Magnetic
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Electrical Flow (Current)
Resistance Electrical
Pressure Ohm's Law Power Circuits
Measuring Electricity
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Open
Basic Electrical Diagnosis
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Short
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High resistance
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Electrical Test Equipment
Circuit TesterTest lightContinuity tester
Voltmeter
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Ammeter
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Ohmmeter
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Logic Probes
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DMM Usage Multimeter
DVOMDMMRMSAverage RespondingRFI
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Duty Cycle Pulse width Frequency
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Ignition System Test Equipment Tachometer Tach-
Dwellmeter Timing Light
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BTDCATDC
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Magnetic Timing Probe
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Electronic Ignition TesterShorted module testCranking current testKey on/engine off current testIdle current testCruise current testCranking primary voltage testIdle primary voltage testCruise primary voltage test
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Lab Scopes Dual-trace
oscilloscopes Glitches
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Analog Digital
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Wave forms
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Engine Diagnostic Tools Compression testers Cylinder Leakage Tester Cylinder Power Balance Test Vacuum Gauge Vacuum Pump Vacuum Leak Detector
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Cooling System Pressure Tester Coolant Hydrometer Oil Pressure Gauge Belt Tension Gauge Stethoscope
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Fuel System Test Equipment Pressure Gauge Injector Balance Tester Injector Circuit Test Light Fuel Injector Cleaners
Exhaust Analyzers Two Gas Four Gas Five Gas
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Scanners Breakout boxes ODB-II
Engine Analyzers All in one
Compression gaugeEmission analyzerPressure analyzer
Scan Tools
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VoltmeterVacuum gaugeOhmmeterVacuum pumpAmmeterTachometerOscilloscopeTiming light/probeComputer scan tool
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Tests Performed by Engine AnalyzersCranking voltageRelative compressionCharging voltagePrimary circuit voltageSecondary circuit kilovoltageCylinder power balanceEngine vacuum
Hydraulic System Testers Pressure Gauges