AUTOMOTIVE ELECTRICAL CIRCUITS AND WIRING

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NEUTRAL SAFETY SWITCH STARTING MOTOR CIRCUIT TESTS IGNITION CIRCUIT IGNITION COIL IGNITION DISTRIBUTOR SPARK PLUG SPARK PLUG WIRES ELECTRONIC IGNITION SYSTEM IGNITION TIMING DEVICES IGNITION SYSTEM MAINTENANCE A SPARK PLUG WIRE RESISTANCE TEST ELECTRONIC IGNITION DISTRIBUTOR SERVICE LIGHTING CIRCUIT HEADLIGHTS HEADLIGHT SWITCH DIMMER SWITCH BLACKOUT LIGHTS TURN-SIGNAL SYSTEMS EMERGENCY LIGHT SYSTEM INSTRUMENTS, GAUGES, AND ACCESSORIES FUEL GAUGE TEMPERATURE GAUGE MECHANICAL SPEEDOMETERS AND TACHOMETERS WINDSHIELD WIPERS WIRING ASSEMBLIES WIRE TERMINAL ENDS WIRE SUPPORT AND PROTECTION AUTOMOTIVE ELECTRICAL CIRCUITS AND WIRING 2/ 101
AUTOMOTIVE ELECTRICAL CIRCUITS AND WIRING INTRODUCTION Learning Objective: Identify charging, starting, ignition, and accessory-circuit components, their functions, and maintenance procedures. Identify the basic types of automotive wiring, types of terminals, and wiring diagrams. The electrical systems on equipment used by the Navy are designed to perform a variety of functions. The automotive electrical system contains five electrical circuits. These circuits are as follows (fig. 2-1): Charging circuit Starting circuit Ignition circuit Lighting circuit Accessory circuit Electrical power and control signals must be delivered to electrical devices reliably and safely so electrical system functions are not impaired or converted to hazards. This goal is accomplished through careful circuit design, prudent component selection, and practical equipment location. By carefully studying this chapter and the preceding chapter, you will understand how these circuits work and the adjustments and repairs required to maintain the electrical systems in peak condition. AUTOMOTIVE ELECTRICAL CIRCUITS AND WIRING 3/ 101
Page 1: AUTOMOTIVE ELECTRICAL CIRCUITS AND
Page 5 and 6: It must help the charging system pr
Page 7 and 8: BATTERY CASE, COYER, AND CAPS. The
Page 9 and 10: BATTERY CAPACITY The capacity of a
Page 11 and 12: smaller charge is needed. As the ba
Page 13 and 14: the water slowly, stirring gently b
Page 15 and 16: the terminals just enough to secure
Page 17 and 18: Figure 2-6.- Battery leakage test.
Page 19 and 20: To perform a battery drain test, se
Page 21 and 22: must be used to convert from altern
Page 23 and 24: charge, the line voltage will incre
Page 25 and 26: Figure 2-14.- Schematic wiring diag
Page 27 and 28: short is present, the steel strip w
Page 29 and 30: Figure 2-20.- Testing an armature f
Page 31 and 32: The fingers on one of the claw-shap
Page 33 and 34: A cross-sectional view of a typical
Page 35 and 36: The electronic voltage regulators u
Page 37 and 38: If the ohmmeter reading is low or t
Page 39 and 40: After completing the required test
Page 41 and 42: CAUTION Follow the manufacturer's d
Page 43 and 44: armature and the field; the attract
Page 45 and 46: gears engage and when the engine ki
Page 47 and 48: voltage from the battery is often t
Page 49 and 50: eduction drive head may rotate as m
Page 51 and 52: Once the starter is checked and rep
Page 53 and 54:
The ignition circuit is actually ma
Page 55 and 56:
Figure 2-43.- Ignition switch and p
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DISTRIBUTOR CAP.- The distributor c
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SPARK PLUG WIRES The spark plug wir
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The components of an electronic ign
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As speed increases, centrifugal for
Page 65 and 66:
Spark Plugs and Spark Plug Wires Ba
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Figure 2-50.- Ash fouled. When a sp
Page 69 and 70:
A common problem arises when a CARB
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ELECTRONIC IGNITION DISTRIBUTOR SER
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After the initial ignition timing,
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Figure 2-56.-( A) Single-contact bu
Page 77 and 78:
Figure 2-60.- Blackout light/ headl
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To ensure that the headlights are p
Page 81 and 82:
Figure 2-65.- Blackout driving ligh
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The turn signal flasher unit (fig.
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EMERGENCY LIGHT SYSTEM The emergenc
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operation, the voltage indicated on
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The THERMOSTATIC FUEL GAUGE, SELF-R
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A pressure gauge is used widely in
Page 93 and 94:
Figure 2-82.- Types of sending unit
Page 95 and 96:
Electronic Speedometers and Tachome
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AUTOMOTIVE WIRING Learning Objectiv
Page 99 and 100:
Figure 2-86.- A typical wiring harn
Page 101:
Figure 2-89.- Wiring diagram symbol
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AUTOMOTIVE ELECTRICAL CIRCUITS AND WIRING

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