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OBJECTIVES
After studying Chapter 19, the reader should be able to:
1. Prepare for ASE Electrical/Electronic Systems (A6)
certification test content area “C” (Starting System
Diagnosis and Repair).
2. Explain how to disassemble and reassemble a
starter motor and solenoid.
3. Discuss how to perform a voltage drop test on the
cranking circuit.
4. Describe how to perform cranking system repair
procedures.
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
STARTING SYSTEM TROUBLESHOOTING
• The proper operation of the starting system depends on a
good battery, good cables and connections, and a good
starter motor.
• Because a starting problem can be caused by a defective
component anywhere in the starting circuit, it is important to
check for the proper operation of each part of the circuit to
diagnose and repair the problem quickly.
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
VOLTAGE DROP TESTING
• Voltage drop is the drop in
voltage that occurs when
current is flowing through a
resistance.
• Voltage drop testing of the
wire involves connecting a
voltmeter set to read DC
volts to the suspected highresistance cable ends and
cranking the engine.
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
FIGURE 19-1 To test the voltage drop of
the battery cable connection, place one
voltmeter lead on the battery terminal and
the other voltmeter lead on the cable end
and crank the engine. The voltmeter will
read the difference in voltage between the
two leads which should not exceed 0.2 volt
(200 mV).
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Pearson Prentice Hall - Upper Saddle River, NJ 07458
VOLTAGE DROP TESTING
FIGURE 19-2 Voltmeter hookups for voltage drop testing of a GM-type
cranking circuit.
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
VOLTAGE DROP TESTING
FIGURE 19-3 Voltmeter hookups for voltage drop testing of Ford-type cranking circuit.
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
VOLTAGE DROP TESTING
• If the difference in the two readings exceeds
0.5 volt, perform the following steps to
determine the exact location of the voltage
drop.
– Connect the positive voltmeter test lead to the mostpositive end of the cable being tested.
– Connect the negative voltmeter test lead to the other end
of the cable being tested.
– Crank the engine.
– Evaluate the results.
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
CONTROL CIRCUIT TESTING
• When the ignition switch is rotated to the start position,
current flows through the ignition switch and neutral safety
switch and activates the solenoid.
FIGURE 19-4 A typical Ford solenoid on the left and a typical GM solenoid on the right.
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
CONTROL CIRCUIT TESTING
• High current then flows
directly from the battery
through the solenoid and to
the starter motor.
• Therefore, an open or
break anywhere in the
control circuit will prevent
the operation of the starter
motor.
FIGURE 19-5 GM solenoid ohmmeter
check. The reading between 1 and 3 (S
terminal and ground) should be 0.4 to 0.6
ohm (hold-in winding). The reading
between 1 and 2 (S terminal and M
terminal) should be 0.2 to 0.4 ohm
(pull-in winding).
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
CONTROL CIRCUIT TESTING
• If a starter is inoperative, first check for voltage at the S
(start) terminal of the starter solenoid.
• Some newer models with antitheft controls use a relay to
open this control circuit to prevent starter operation.
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
CONTROL CIRCUIT TESTING
FIGURE 19-6 Starter trouble diagnostic chart.
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
SPECIFICATIONS FOR A STARTER AMPERAGE
TEST
• A starter amperage test
should be performed when
the starter fails to operate
normally (is slow in
cranking) or as part of a
routine electrical system
inspection.
FIGURE 19-7 Starter current can be
measured by using a high current clamp
and a digital multimeter or a specialized
starting and charging tester.
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
SPECIFICATIONS FOR A STARTER AMPERAGE
TEST
• If exact specifications are not available, the following can be
used as general maximum amperage draw specifications for
testing a starter on the vehicle.
4-cylinder engines = 150 to 185 amperes
6-cylinder engines = 160 to 200 amperes
8-cylinder engines = 185 to 250 amperes
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
SPECIFICATIONS FOR A STARTER AMPERAGE
TEST
• Excessive current draw may indicate one or more of
the following:
1. Binding of starter armature as a result of worn bushings
2. Oil too thick (viscosity too high) for weather conditions
3. Shorted or grounded starter windings or cables
4. Tight or seized engine
5. Shorted starter motor (usually caused by fault with the field coils or
armature)
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
STARTER REMOVAL
• After testing has confirmed that a starter motor may need to
be replaced, most vehicle manufacturers recommend the
following general steps and procedures.
Step 1 Disconnect the negative battery cable.
Step 2 Hoist the vehicle safely.
Step 3 Remove the starter retaining bolts and lower the starter to
gain access to the wire(s) connection(s) on the starter.
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
STARTER REMOVAL
Step 4 Disconnect the wire(s) from the starter and remove the starter.
Step 5 Inspect the flywheel (flexplate) for ring gear damage. Also check
that the mounting holes are clean and the mounting flange is clean and
smooth. Service as needed.
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
STARTER OVERHAUL
• To remove the starter motor from the vehicle, first remove
the negative battery cable from the battery to prevent any
possible shorts from causing personal injury or property
damage.
• Before disconnecting the wiring, mark or tag the location of
all wiring connections.
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
STARTER OVERHAUL
FIGURE 19-8 Before disassembly of any
starter, mark the location of the through
bolts on the field housing. This makes
reassembly easier.
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
FIGURE 19-9 Removing the solenoid
from the starter on a GM-type starter
assembly.
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Pearson Prentice Hall - Upper Saddle River, NJ 07458
STARTER OVERHAUL
FIGURE 19-10 Rotate the solenoid to
remove it from the starter housing.
(Caution: The plunger return spring exerts
a force on the solenoid and may cause
personal injury if not carefully released.)
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
FIGURE 19-11 The brushes should be
replaced if worn to less than 50% of their
original length. Replace if less than 1/2
in.(13 mm) long.
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
STARTER OVERHAUL
FIGURE 19-12 An exploded view of a General Motors starter.
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
STARTER OVERHAUL
FIGURE 19-13 To replace the starter drive unit, the retainer and clip must be
removed from the armature shaft. A box-end wrench and a hammer can be used
to pop the retainer off of the spring clip.
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
TESTING STARTER ARMATURES
• After the starter drive has been removed from the
armature, it can be checked for run out using a dial
indicator and V-blocks
FIGURE 19-14 Measuring an armature shaft for run-out using a dial
indicator V-blocks.
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
GROWLER TEST FOR SHORTED ARMATURE
WINDINGS
• If an armature is shorted
(copper-to-copper
connection), it must be
replaced or rewound by a
specialist.
FIGURE 19-15 Using a growler to check for
shorted armature windings.
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
TESTING THE ARMATURE FOR GROUNDS
• An open in an armature is usually observed visually as a
loop that is broken or unsoldered where it connects to the
commutator segments.
• A loose or broken solder connection can often be repaired by
resoldering the broken connection using rosin-core solder.
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
ARMATURE SERVICE
• Some manufacturers
recommend that the
insulation between the
segments of the armature
(mica or hard plastic) be
undercut.
FIGURE 19-16 Replacement starter
brushes should be installed so the beveled
edge matches the rotation of commutator.
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
TESTING STARTER MOTOR FIELD COILS
• With the armature removed from the starter motor, the field
coils should be tested for opens and grounds using a
powered test light or an ohmmeter.
• The ohmmeter should indicate infinity (no continuity), and
the test light should not light.
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
STARTER BRUSH INSPECTION
• Starter brushes should be replaced if the brush length is less
than one-half of its original length (less than 1/2 in. [13 mm]).
• Many starters use brushes that are held in with screws and
are easily replaced, whereas other starters may require
soldering to remove and replace the brushes.
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
BENCH TESTING
• Every starter should be tested before installation in a vehicle.
• A typical amperage specification for a starter being tested on
a bench (not installed in a vehicle) usually ranges from 60 to
100 amperes.
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
STARTER INSTALLATION
• Following are the usual steps needed to be performed to
install a starter.
Step 1 Check service information for the exact wiring connections to the
starter and/or solenoid.
Step 2 Verify that all electrical connections on the starter motor and/or
solenoid are correct for the vehicle and that they are in good condition.
Step 3 Attach the power and control wires.
Step 4 Install the starter, and torque all the fasteners to factory
specifications.
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
STARTER DRIVE-TOFLYWHEEL CLEARANCE
• Many starters use shims,
which are thin metal strips
between the flywheel and
the engine block mounting
pad to provide the proper
clearance.
FIGURE 19-17 A shim (or half shim) may be
needed to provide the proper clearance between
the flywheel teeth of the engine and the pinion
teeth of the starter.
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
STARTER DRIVE-TOFLYWHEEL CLEARANCE
• To be sure that the starter is shimmed correctly, use
the following procedure.
Step 1 Place the starter in position and finger tighten the mounting bolts.
Step 2 Use a 1/8 in. diameter drill bit (or gauge tool) and insert between
the armature shaft and a tooth of the engine flywheel.
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
STARTER DRIVE-TO FLYWHEEL CLEARANCE
Step 3 If the gauge tool cannot be inserted, use a full length shim across
both mounting holes which will move the starter away from the flywheel.
Step 4 Remove a shim(s) if the gauge tool is loose between the shaft
and the tooth of the engine flywheel.
Step 5 If no shims have been used and the fit of the gauge tool is too
loose, add a half shim to the outside pad only. This moves the starter
closer to the teeth of the engine flywheel.
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
STARTING SYSTEM SYMPTOM GUIDE
• The following list will assist technicians in
troubleshooting starting systems.
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
STARTING SYSTEM SYMPTOM GUIDE
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
LIGHTS ON TO CRANK
• This simple theft deterrent uses a relay to prevent the
engine from cranking unless the parking lights are turned
on first.
FIGURE 19-18 This
simple theft deterrent
circuit will prevent the
engine from cranking
unless the lights are
turned on first. The lights
do not have to remain on
after the engine starts.
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
STARTER AMPERAGE DRAW TEST
Step-by-Step
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
STARTER AMPERAGE DRAW TEST
Step-by-Step
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
cont
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
STARTER AMPERAGE DRAW TEST
Step-by-Step
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
cont
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
Voltage Drop Testing
Step-by-Step
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
Voltage Drop Testing
Step-by-Step
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
cont
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
Voltage Drop Testing
Step-by-Step
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
cont
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
STARTER OVERHAUL
Step-by-Step
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
STARTER OVERHAUL
Step-by-Step
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
cont
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
STARTER OVERHAUL
Step-by-Step
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
cont
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
STARTER OVERHAUL
Step-by-Step
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
cont
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
STARTER OVERHAUL
Step-by-Step
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
cont
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
STARTER OVERHAUL
Step-by-Step
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
cont
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
STARTER OVERHAUL
Step-by-Step
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
cont
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
STARTER OVERHAUL
Step-by-Step
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
cont
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
STARTER OVERHAUL
Step-by-Step
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
cont
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
STARTER OVERHAUL
Step-by-Step
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
cont
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
STARTER OVERHAUL
Step-by-Step
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
cont
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
STARTER OVERHAUL
Step-by-Step
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
cont
© 2010 Pearson Higher Education, Inc.
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SUMMARY
1.
2.
3.
4.
Proper operation of the starter motor depends on the
battery being at least 75% charged and the battery cables
being of the correct size (gauge) and having no more than
0.2 volt drop.
Voltage drop testing includes cranking the engine,
measuring the drop in voltage from the battery to the
starter, and measuring the drop in voltage from the
negative terminal of the battery to the engine block.
The cranking circuit should be tested for proper amperage
draw.
An open in the control circuit can prevent starter motor
operation.
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
REVIEW QUESTIONS
1. What is the starter removal procedure?
2. Explain how to perform a voltage drop test of the
cranking circuit.
3. List the steps necessary to check and repair a
starter.
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
CHAPTER QUIZ
1. A growler is used to test what starter component?
a)
b)
c)
d)
Field coils
Armatures
Commutator
Solenoid
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
CHAPTER QUIZ
1. A growler is used to test what starter component?
a)
b)
c)
d)
Field coils
Armatures
Commutator
Solenoid
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
CHAPTER QUIZ
2.
Two technicians are discussing what could be the cause of
slow cranking and excessive current draw. Technician A
says that an engine mechanical fault could be the cause.
Technician B says that the starter motor could be binding
or defective. Which technician is correct?
a)
b)
c)
d)
Technician A only
Technician B only
Both Technicians A and B
Neither Technician A nor B
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
CHAPTER QUIZ
2.
Two technicians are discussing what could be the cause of
slow cranking and excessive current draw. Technician A
says that an engine mechanical fault could be the cause.
Technician B says that the starter motor could be binding
or defective. Which technician is correct?
a)
b)
c)
d)
Technician A only
Technician B only
Both Technicians A and B
Neither Technician A nor B
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
CHAPTER QUIZ
3.
A V-6 is being checked for starter amperage draw. The
initial surge current was about 210 amperes and about 160
amperes during cranking. Technician A says the starter is
defective and should be replaced because the current flow
exceeds 200 amperes. Technician B says this is normal
current draw for a starter motor on a V-6 engine. Which
technician is correct?
a)
b)
c)
d)
Technician A only
Technician B only
Both Technicians A and B
Neither Technician A nor B
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
CHAPTER QUIZ
3.
A V-6 is being checked for starter amperage draw. The
initial surge current was about 210 amperes and about 160
amperes during cranking. Technician A says the starter is
defective and should be replaced because the current flow
exceeds 200 amperes. Technician B says this is normal
current draw for a starter motor on a V-6 engine. Which
technician is correct?
a)
b)
c)
d)
Technician A only
Technician B only
Both Technicians A and B
Neither Technician A nor B
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
CHAPTER QUIZ
4. The voltage drop of a battery cable should be
_____ volt or less.
a)
b)
c)
d)
0.1
0.2
0.8
1.0
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
CHAPTER QUIZ
4. The voltage drop of a battery cable should be
_____ volt or less.
a)
b)
c)
d)
0.1
0.2
0.8
1.0
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
CHAPTER QUIZ
5. Technician A says that a discharged battery
(lower-than-normal battery voltage) can cause
solenoid clicking. Technician B says that a
discharged battery or dirty (corroded) battery
cables can cause solenoid clicking. Which
technician is correct?
a)
b)
c)
d)
Technician A only
Technician B only
Both Technicians A and B
Neither Technician A nor B
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
CHAPTER QUIZ
5. Technician A says that a discharged battery
(lower-than-normal battery voltage) can cause
solenoid clicking. Technician B says that a
discharged battery or dirty (corroded) battery
cables can cause solenoid clicking. Which
technician is correct?
a)
b)
c)
d)
Technician A only
Technician B only
Both Technicians A and B
Neither Technician A nor B
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
CHAPTER QUIZ
6. Slow cranking by the starter can be caused by all
except the following: _____.
a)
b)
c)
d)
A low or discharged battery
Corroded or dirty battery cables
Engine mechanical problems
An open neutral safety switch
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
CHAPTER QUIZ
6. Slow cranking by the starter can be caused by all
except the following: _____.
a)
b)
c)
d)
A low or discharged battery
Corroded or dirty battery cables
Engine mechanical problems
An open neutral safety switch
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
CHAPTER QUIZ
7. A starter amperage draw test shows excessive
current needed to rotate the engine. This can be
caused by _____.
a)
b)
c)
d)
defective starter
engine oil too thick
seized engine
any of the above
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
CHAPTER QUIZ
7. A starter amperage draw test shows excessive
current needed to rotate the engine. This can be
caused by _____.
a)
b)
c)
d)
defective starter
engine oil too thick
seized engine
any of the above
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
CHAPTER QUIZ
8. If the clearance between the starter pinion and the
engine flywheel is too great, _____.
a) The starter will produce a high-pitched whine during
cranking
b) The starter will produce a high-pitched whine after the
engine starts
c) The starter drive will not rotate at all
d) The solenoid will not engage the starter drive unit
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
CHAPTER QUIZ
8. If the clearance between the starter pinion and the
engine flywheel is too great, _____.
a) The starter will produce a high-pitched whine during
cranking
b) The starter will produce a high-pitched whine after the
engine starts
c) The starter drive will not rotate at all
d) The solenoid will not engage the starter drive unit
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
CHAPTER QUIZ
9.
A technician connects one lead of a digital voltmeter to the positive (+)
terminal of the battery and the other meter lead to the B terminal of the
starter solenoid and then cranks the engine. During cranking, the
voltmeter displays a reading of 878 mV. Technician A says that this
reading indicates that the positive battery cable has too high
resistance. Technician B says that this reading indicates that the
starter is defective. Which technician is correct?
a)
b)
c)
d)
Technician A only
Technician B only
Both Technicians A and B
Neither Technician A nor B
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
CHAPTER QUIZ
9.
A technician connects one lead of a digital voltmeter to the positive (+)
terminal of the battery and the other meter lead to the B terminal of the
starter solenoid and then cranks the engine. During cranking, the
voltmeter displays a reading of 878 mV. Technician A says that this
reading indicates that the positive battery cable has too high
resistance. Technician B says that this reading indicates that the
starter is defective. Which technician is correct?
a)
b)
c)
d)
Technician A only
Technician B only
Both Technicians A and B
Neither Technician A nor B
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
CHAPTER QUIZ
10. A vehicle equipped with a V 8 engine does not crank fast
enough to start and sparks are observed at the negative
terminal of the battery during cranking. Technician A says
the battery could be discharged or defective. Technician B
says that the negative cable is loose at the battery. Which
technician is correct?
a)
b)
c)
d)
Technician A only
Technician B only
Both Technicians A and B
Neither Technician A nor B
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
CHAPTER QUIZ
10. A vehicle equipped with a V 8 engine does not crank fast
enough to start and sparks are observed at the negative
terminal of the battery during cranking. Technician A says
the battery could be discharged or defective. Technician B
says that the negative cable is loose at the battery. Which
technician is correct?
a)
b)
c)
d)
Technician A only
Technician B only
Both Technicians A and B
Neither Technician A nor B
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458
END
Diagnosis and Troubleshooting of Automotive Electrical,
Electronic, and Computer Systems, Fifth Edition
By James D. Halderman
© 2010 Pearson Higher Education, Inc.
Pearson Prentice Hall - Upper Saddle River, NJ 07458