Deck 18: Starting and Motor Systems

Question 1

The usual minimum cranking voltage specification is ______ volts.

A)9.6
B)10.5
C)11.0
D)12.65

Answer 1

A

Question 2

Which of the following tests would be performed to check for high resistance in the positive battery cable?

A)cranking voltage test
B)insulated circuit resistance test
C)starter relay bypass test
D)ground circuit resistance test

Answer 2

B

Question 3

The starter motor converts electric current into torque or twisting force through the interaction of magnetic fields.

Answer 3

True

Question 4

When the starter spins but does NOT crank the engine, which of the following may be a cause?

A)a defective starter drive
B)excessive resistance in the control circuit
C)a faulty neutral safety switch
D)All the answers are correct.

Question 5

Cranking problems may occur if oversize battery cables are installed.

Question 6

The gear ratio between the starter pinion gear and flywheel teeth provides an increase in torque and a reduction in speed (rpm).

Question 7

Permanent magnet starting motors use strong magnets surrounded by field coils to produce extra turning torque.

Question 8

Which of the following could result in a hard starting condition?

A)corroded battery cables
B)excessive CCA capacity
C)heavy-gauge battery cables
D)All the answers are correct.

Question 9

Which of the following is NOT a part of the starter control circuit?

A)ignition switch
B)starter relay
C)ballast resistor
D)starting safety switch

Question 10

Which of the following is NOT part of the starter motor circuit?

A)battery
B)solenoid
C)starter motor
D)ignition switch

Question 11

The starter circuit requires strong voltage, but actual current flow is low.

Question 12

Most starter motors have two to six brushes.

Question 13

A battery should be checked and charged as needed before performing any starting systems tests.

Question 14

If the wrong weight motor oil is used, an engine may crank very slowly or may not start in cold weather.

Question 15

Some starters use planetary gearsets for gear reduction.

Question 16

The starter safety switch on a vehicle with an automatic transmission is typically located on the transmission housing.

Question 17

Poor or incomplete diagnosis accounts for the fact that nearly 80 percent of starters returned as defective on warranty claims work perfectly when tested.

Question 18

When a cranking voltage test is performed, the ignition system must be disabled.

Question 19

While the engine is cranked, a voltmeter placed between positive battery post and the positive post of the starter reads less than .01 volt. The cause of this reading could be ______.

A)excessive resistance in the ground circuit
B)normal resistance in the positive battery cable
C)excessive resistance in the solenoid control circuit
D)excessive resistance in the positive battery cable

Question 20

The starter must never operate for more than sixty seconds at a time and should rest for two minutes between extended cranking.

Question 21

The field coils in the starter motor are connected in ______.

A)series
B)shunt (parallel)
C)series-shunt (series-parallel)
D)All the answers are correct.

Question 22

Technician A says the starter solenoid mounts directly on top of the starter motor. Technician B says the starter solenoid pushes the starter drive pinion into mesh with the flywheel teeth. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 23

When performing a cranking current test: if a remote starter switch cannot be used, the _____ system must be disabled.

A)ignition
B)fuel
C)S.I.R. (air bag)
D)torque converter clutch (TCC)

Question 24

Checking for excessive resistance in the starting circuit is being discussed. Technician A says connecting a voltmeter across the ground cable from the battery to the ground connection of the cable is the preferred method. Technician B says connecting an ohmmeter across the positive battery cable after it has been removed from the vehicle is the preferred method. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 25

Technician A says a starter no-load test is conducted with the starter in a bench vise. Technician B says the battery must have a minimum voltage of 9.6 volts during the test. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 26

The teeth on a starter drive are worn excessively. Technician A says to replace the starter drive. Technician B says to check the flywheel. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 27

The device that prevents the engine from turning the armature of the starter motor is the ______.

A)overrunning clutch
B)pinion gear
C)flywheel
D)pole shoe

Question 28

Technician A checks a starter's field coils for opens by connecting an ohmmeter between the coil's power feed wire and the field coil brush lead. Technician B checks a starter's field coil for a short to ground by connecting an ohmmeter from the field coil brush lead and the starter housing. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 29

Technician A says the purpose of the solenoid is to engage the starter pinion into the flywheel's ring gear. Technician B says the solenoid energizes the starter motor by closing the electrical circuit from the battery to the motor. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 30

If a ground circuit test reveals a voltage drop of more than 0.2 volt, the problem may be a ______.

A)loose starter motor mounting bolt
B)poor battery ground terminal post connector
C)damaged battery ground cable
D)All the answers are correct.

Question 31

Technician A says the starter circuit carries high current from the battery to the starter motor. Technician B says the control circuit is a low current circuit that sends current from the ignition switch to the starter relay or solenoid. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 32

The starter solenoid's function is to _____.

A)push the drive pinion gear into engagement with the ring gear teeth
B)act as a relay switch to energize the starter motor
C)both A and B
D)neither A nor B

Question 33

A vehicle is being diagnosed for a "no crank" problem. When the ignition switch is turned to the start position, a clicking [buzzing] noise is heard at the starter but the engine does not crank over. Technician A says the problem could be a weak battery. Technician B says the problem could be an open in the hold-in winding. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 34

The maximum voltage drop for the insulated circuit (battery positive to starter solenoid)is typically about _____ volt.

A)0.02
B)0.06
C)0.2
D)0.6

Question 35

The pull-in winding and hold-in winding are part of the _____.

A)starter field coil assembly
B)starter solenoid
C)armature winding
D)starter safety switch

Question 36

A vehicle that has a low cranking RPM is being diagnosed. After checking the battery a cranking voltage test measures 9.1 volts at the starter solenoid terminal. What should be done next?

A)Replace the starter
B)Perform a cranking current test
C)Check the voltage at the ignition switch
D)Perform a charging system output test

Question 37

Pinion gear to flywheel ring gear clearance is being discussed. Technician A says if there is too much clearance, there will be a high-pitched noise after the engine starts. Technician B says if there is too little clearance, there will be a high-pitched noise while the starter is cranking the engine. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 38

A cranking current test is performed, and the amperage is found to be less than specification. Technician A says the starter is bad and it should be replaced. Technician B insists on testing the resistance of the cables, grounds, and connections. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 39

The function of the overrunning clutch in the starter drive is to _____.

A)allow the pinion gear teeth to engage the ring gear teeth if they don't initially align
B)prevent damage to the ring gear and drive pinion if the driver accidentally engages the starter when the engine is running
C)prevent damage to the armature if the starter stays engaged after the engine starts
D)All the answers are correct.

Question 40

An engine cranks slowly. Technician A says a possible cause of the problem is low resistance in the starter circuit connections. Technician B says a possible cause is an open in the starter field coil circuit. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 41

Some starters use ____________________ between the starter and the mounting pad to allow for proper clearance between the drive pinion gear and the flywheel ring gear.

Question 42

The ____________________ is the rotating component of the starter.

Question 43

When replacing a starter drive that has chipped pinion gear teeth what else must be checked before the starter is installed?

A)ignition switch
B)starter solenoid
C)starter relay
D)ring gear teeth

Question 44

The two main components of the armature are the armature windings and the _____.

A)field coil
B)brush holder
C)pole shoe
D)commutator

Question 45

The starter motor ____________________ clutch should rotate smoothly in one direction and lock in the other.

Question 46

If the flywheel ring gear teeth are worn, the ring gear should be ____________________.

Question 47

Positive engagement or movable pole shoe type starters are normally found on older vehicles built by _____.

A)GM
B)Ford
C)Chrysler
D)Toyota

Question 48

The field coils connect in series with the armature windings through the starter ____________________.

Question 49

The starting system has two separate electrical circuits: the starter circuit and the ____________________ circuit.

Question 50

The armature has two main components: the armature ____________________ and the commutator.

Question 51

Nearly all starter system current testers (VAT)use an ____________________type ammeter to measure current draw.

Question 52

The part of the armature that the brushes ride on is called the ____________________.

Question 53

Which of the following would NOT cause excessive current draw by the starter motor?

A)a short in the starter motor
B)excessive resistance in the battery cables
C)high mechanical resistance due to engine problems
D)misalignment of the starter drive

Question 54

A starter motor can have as many as ____________________ brushes.

Question 55

All positive engagement starters use a(n)____________________ in series between the battery and the starter motor.

Question 56

Technician A says permanent magnet starter motors are more robust than electromagnetic field type motors and can better withstand being dropped. Technician B says permanent magnet motors can produce more torque using less electric current. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 57

What device pushes the starter pinion gear into mesh with the ring gear when the ignition switch is in the start position?

A)overrunning clutch
B)field coil
C)armature
D)solenoid plunger

Question 58

On a vehicle equipped with a starter relay, there are two positive battery cables. One connects the battery positive battery terminal to the relay. The second cable connects the battery to the ____________________ terminal.

Question 59

The starter drive ____________________ gear teeth mesh with the flywheel ring gear teeth.

Question 60

A(n)____________________ is an electromagnetic device that uses the movement of a plunger to exert a pulling or holding force.

Question 61

Identify the six basic components of a typical starting system.

Question 62

What is unique about auto start-stop solenoid starters used on some late-model engines?

Question 63

Describe how to perform a cranking voltage test.

Question 64

With a starter removed from the vehicle, how is the overrunning clutch inspected?

Question 65

Why does proper starter operation depend on good battery cables and connectors?

Question 66

What is counter EMF ?

Question 67

How does the design of a permanent magnet starting motor differ from one designed with electromagnets?

Question 68

What is the purpose of field coils and pole shoes?

Question 69

Describe some important safety precautions that should be followed while testing the starter.

Question 70

What is the first step in removing a starter from a vehicle?

Question 71

Identify five tests used to troubleshoot the starting system.