How to Diagnose and Repair Automotive Electrical Systems

Overview


Tracy Martin, an ASE (Automotive Service Excellence) Certified Master Technician, explains the principles behind automotive electrical systems and how they work. This book details the various tools, such as multimeters and test lights, that can be used to evaluate and troubleshoot any vehicle's electrical system. Several hands-on projects take readers on a guided tour of their vehicle's electrical system and demonstrate how to fix specific problems.
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Overview


Tracy Martin, an ASE (Automotive Service Excellence) Certified Master Technician, explains the principles behind automotive electrical systems and how they work. This book details the various tools, such as multimeters and test lights, that can be used to evaluate and troubleshoot any vehicle's electrical system. Several hands-on projects take readers on a guided tour of their vehicle's electrical system and demonstrate how to fix specific problems.
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Product Details

  • ISBN-13: 9780760320990
  • Publisher: Motorbooks
  • Publication date: 11/10/2005
  • Series: Motorbooks Workshop Series
  • Edition description: First
  • Pages: 160
  • Sales rank: 588,519
  • Product dimensions: 8.25 (w) x 10.75 (h) x 0.50 (d)

Meet the Author

Tracy Martin writes for Motorcycle Consumer News, RoadBike, Friction Zone, PowerSports, and Dealer News magazines. He is the author of six books, including the Motorbooks titles How to Diagnose and Repair Automotive Electrical Systems (2005), Motorcycle Electrical Systems: Troubleshooting and Repair (2007), How to Tune and Modify Motorcycle Engine Management Systems (2012), and How to Troubleshoot, Repair, and Modify Motorcycle Electrical Systems (2014). Tracy lives in Baltimore, Maryland.

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Table of Contents

Preface 8
Section I Theory
Chapter 1 Ohm's Law 10
"Three Things" About 12-Volt DC Circuits 11
"Three Things" About 12-Volt DC Circuits 14
Resistance/Amps Relationship 16
DC and AC Circuits 18
Oh No, Math? 19
Rules of Operation for Three Types of Circuits 20
Chapter 2 Voltage Drop Testing 26
Don't Use an Ohmmeter 27
How a Voltmeter Measures Voltage 28
Testing Circuits Dynamically 30
Voltage Drop 32
How Much Is Too Much? 33
Locating the Bad Spot 35
Test, Don't Guess 36
Section II Tools
Chapter 3 Electronic Testing Tools 37
Test Lights 38
Multimeters 40
Fluke Multimeter 42
Measuring Amperage 45
Logic Probes 46
Noid Lights 46
Short Finders 47
Jumper Wires and Accessories 49
Coil Testers 50
Spark Tester 51
Ignition Timing Lights 53
Battery Testers 53
Lab Scopes 54
Soldering Tools 55
Section III Electrical Systems
Chapter 4 Storage Battery 58
Chemical Reactions 59
Discharging 60
Electrolyte Solution 61
Charging 62
Battery Ratings 63
Type of Batteries 63
Battery Testing - State of Charge 64
Dynamic Battery Testing 65
Hand-held Battery Testers 67
Chapter 5 Charging and Starting Systems 69
DC Generators 69
DC Generator Voltage Regulators 71
Alternators 72
Mechanical Voltage Regulators for Alternators 75
Transistorized Electronic Voltage Regulators 76
Internal and Computer-Controlled Voltage Regulators 77
Charge Indicators 78
Alternator Testing 81
Generic Alternator Testing 83
GM Alternator with External Regulator 85
GM Delcotron Alternator with Internal Regulator 87
Delco-Remy CS Alternator 87
Ford-Alternator with External Regulator 89
Ford-Motorcraft IAR Alternators 89
Chrysler Alternator with External Voltage Regulator 90
Chrysler's Computer-Controlled Alternator 90
DC Generator and Regulator Testing 90
Generator Polarizing 91
Starter Motors 92
Starter Solenoids 93
Starter Testing 93
Chapter 6 Ignition Systems 96
How To Get from 12 Volts to 100,000 Volts 97
Ignition Coils 97
Generic Coil Testing 99
Points and Condenser 101
Electronic Ignition and Computer Controls 102
Triggers 104
Ignition Modules 107
Generic Ignition Module Testing 107
Ignition Module "Tap" Testing 108
Secondary Ignition Circuit 116
Chapter 7 Fuel Injection Systems 119
Carburetors 120
Electronic Fuel Injection 120
Taking EFI for a Test Drive 121
Sensor Testing 124
General Motors 128
Ford Motor Company 128
Chrysler 131
Mass Airflow Sensors 131
Fuel Injectors and Injector Pulse 134
Section 4 General Electrical System Diagnosis
Chapter 8 Wiring Diagrams 136
Reading Wiring Diagrams 137
Wiring Diagram Exercises 141
Answers to Wiring Diagram Questions 142
Chapter 9 Troubleshooting Electrical Systems 147
The Starter that Doesn't: A Case Study 147
Bad Grounds 152
Cross over Circuits 153
Parasitic Amp Draw 156
Sources 157
Index 159
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