Deck 4: Wiring and Circuit Diagramswiring Repair and Reading Circuit Diagrams

Question 1

Ground straps can be tested by performing a voltage drop test.

Answer 1

False

Question 2

Technician A says the VIN number will help to determine the correct wiring diagram to use for diagnosis. Technician B says each automobile model may have a different wiring diagram. Who is correct?

A) Technician A only
B) Technician B only
C) Both Technician A and B
D) Neither Technician A nor B

Answer 2

C

Question 3

Dotted lines between switch wipers indicate that all wipers will move together.

Answer 3

True

Question 4

Lt Grn is printed next to a wire on a wiring diagram. This is the color of the wire on the vehicle.

Question 5

A case ground is a remote point to which two or more grounds are connected.

Question 6

An operative radiator fan needs to be repaired. Technician A says a single circuit-type wiring diagram would be the simplest diagram to use. Technician B says a component locator will probably be needed to repair this circuit. Who is correct?

A) Technician A only
B) Technician B only
C) Both Technician A and B
D) Neither Technician A nor B

Question 7

Technician A says wiring diagrams give specific circuit information and detail. Technician B says a wiring diagram will help you find the fault. Who is correct?

A) Technician A only
B) Technician B only
C) Both Technician A and B
D) Neither Technician A nor B

Question 8

A resistor drawn with an arrow through it is the symbol for a variable resistor.

Question 9

Technician A says crimping solderless connections is the best method of splicing wires. Technician B says crimping should not be used if connection is subjected to excessive movement. Who is correct?

A) Technician A only
B) Technician B only
C) Both Technician A and B
D) Neither Technician A nor B

Question 10

Acid core solder should be used when making wiring repairs.

Question 11

Soldering is the preferred method of copper wire.

Question 12

Technician A says a common point is represented by a black dot on the wiring diagram. Technician B says a connector can be a common point. Who is correct?

A) Technician A only
B) Technician B only
C) Both Technician A and B
D) Neither Technician A nor B

Question 13

Touching a printed circuit board with dirty hands will probably NOT harm the circuit.

Question 14

An electrical wiring diagram gives the exact location of electrical components on the vehicle.

Question 15

A switch is drawn on a wiring diagram with "NC" printed beside it. What does this indicate?

A) The switch will be normally closed with the vehicle running.
B) The switch will be open with the vehicle off.
C) The switch will be closed with the vehicle off.
D) None of the above

Question 16

What does a dotted line between connectors indicate?

A) The connectors are electrically connected.
B) The connectors are physically the same.
C) The connector is a remote connector.
D) None of the above

Question 17

A wiring diagram illustrates three wires that are joined together at "C-215." Technician A says the wires are connected together at connector C-215. Technician B says the three wires are part of circuit 215. Who is correct?

A) Technician A only
B) Technician B only
C) Both Technician A and B
D) Neither Technician A nor B

Question 18

Technician A says two connectors with the same number are physically the same connector. Technician B says the two connectors are drawn apart so the drawing is easier to read. Who is correct?

A) Technician A only
B) Technician B only
C) Both Technician A and B
D) Neither Technician A nor B

Question 19

Where is the best place to find the location of a blower relay?

A) Wiring diagram manual
B) Component locator
C) Connector locator
D) Ground locator

Question 20

The conductor of an 18-gauge wire is larger than that of a 10-gauge wire.

Question 21

Most ____ use printed circuit boards as circuit conductors.

A) instrument panels
B) bulkhead connectors
C) ground straps
D) air bag applications

Question 22

__________ __________ __________ are used to prevent damage to the wiring by maintaining proper wire routing and retention.

A) Connector protective devises
B) Connector terminal locks
C) Printed circuit boards
D) Wiring protective devices

Question 23

____ is a term used to mean joining of single wire ends or the joining of two or more electrical conductors at a single point.

A) Tinning
B) Heat shrink
C) Splice
D) Stripping

Question 24

Most of the wires in an automobile are covered with ____ insulation to identify wires and electrical circuits.

A) colored
B) numbered
C) metallic
D) diagrammatic

Question 25

Technician A says a wiring diagram indicates where circuits receive their voltage source and the color of the wires used in the circuit. Technician B says a wiring diagram indicates what circuits are interconnected and gives the location of the electrical components. Who is correct?

A) Technician A only
B) Technician B only
C) Both Technician A and B
D) Neither Technician A nor B

Question 26

Technician A says a wiring diagram is an excellent tool in locating circuit failures. Technician B says in most cases a wiring diagram is not necessary to locate circuit failures. Who is correct?

A) Technician A only
B) Technician B only
C) Both Technician A and B
D) Neither Technician A nor B

Question 27

There is __________ resistance in the stranded wire than in the solid wire.

A) more
B) less

Question 28

Once it is determined that the battery is operating correctly, the ____ should always be the starting point in troubleshooting an electrical system.

A) schematic
B) component locator
C) ground and power leads
D) starting system

Question 29

Technician A says that wiring harnesses pass from the passenger compartment to the engine compartment through bulkhead connectors. Technician B says a wire harness is a group of wires that branches out to various electrical components. Who is correct?

A) Technician A only
B) Technician B only
C) Both Technician A and B
D) Neither Technician A nor B

Question 30

Ground straps are used to:

A) Provide a return path to the battery between insulated components.
B) Suppress electromagnetic induction.
C) All of these choices.
D) None of these choices.

Question 31

In most color codes, the first group of letters designates the __________ __________ of the insulation. The second group of letters indicates the color of the __________.

A) material composition, insulation
B) base color, tracer
C) material composition, base
D) tracer color, base

Question 32

Two technicians are discussing shielded wire repair. Technician A says the shielded wire must kept separate from the circuit wire. Technician B says there is no difference between repairing a shielded or non-shielded wire. Who is correct?

A) Technician A only
B) Technician B only
C) Both Technician A and B
D) Neither Technician A nor B

Question 33

The AWG standard assigns a(n) ____ number to the wire based on the diameter of the conductor not including the insulation.

A) alphanumeric
B) resistive
C) thermal based
D) gauge

Question 34

____ between the powertrain components and the vehicle's chassis are used to complete the return path to the battery.

A) Wiring harnesses
B) Grommets
C) Ground straps
D) Sheet metal parts

Question 35

If the connector is a one-piece, molded-type connector, it cannot be ____ for repairs.

A) disassembled
B) spliced
C) reprogrammed
D) removed

Question 36

Ground straps are used to:

A) Provide a return path to the battery between insulated components.
B) Suppress electromagnetic induction.
C) Both A and B
D) Neither A nor B

Question 37

____ wiring is the term used for conductors used for low voltage circuits.

A) Thin insulation
B) Secondary
C) Primary
D) Low gauge

Question 38

______________________________ complete the return path to the battery between components that are insulated.

A) Connectors
B) Power wires
C) Grounds
D) Buss bars

Question 39

Most wiring diagrams do not show an actual drawing of the components. Rather, they use ____to represent the components.

A) codes
B) legends
C) electrical symbols
D) circuit numbers

Question 40

In a wire, an increase in temperature creates a similar __________ in resistance.

A) decrease
B) increase

Question 41

Why are stranded cooper wires used instead of solid copper wire?

Question 42

What type of connection is used to pass large bundles of wires between the passenger compartment and the engine compartment?

Question 43

Name five types of conductor materials.

Question 44

Splicing aluminum wire is being discussed. Technician A says to solder the wires by coating them with petroleum jelly to control the temperature of the soldering iron. Technician B says to cover the splice with electrical tape. Who is correct?

A) Technician A only
B) Technician B only
C) Both Technician A and B
D) Neither Technician A nor B

Question 45

What is a remote ground?

Question 46

In the AWG standard, what is the relationship between wire diameter and AWG size?

Question 47

____ wire means the conductor is made of several individual wires that are wrapped together.

A) Stranded
B) Copper
C) Primary
D) Secondary

Question 48

What are the factors concerning wire size selection that need to be considered when adding an accessory?

Question 49

Describe four steps taken to successfully diagnose an electrical problem.

Question 50

What does the symbol labeled "G200" in the figure below indicate?

Question 51

Which of the following is NOT part of the troubleshooting process?

A) Confirm the customer concern.
B) Determine operation of shared circuits.
C) Replace the component identified by the DTC.
D) Confirm the repair.

Question 52

Technician A says that wiring harness that run close to exhaust manifolds must be housed in PCV conduit. Technician B says printed circuits cannot be repaired. Who is correct?

A) Technician A only
B) Technician B only
C) Both Technician A and B
D) Neither Technician A nor B

Question 53

Explain at what point during an electrical repair would component, splice, ground, and connector locators be used.

Question 54

In most wiring color codes, what do the first and second group of letters on the wiring diagram indicate?

Question 55

How is wire size determined?

Question 56

What information is available to determine the exact location of electrical components on a vehicle?

Question 57

Explain why automobile manufacturers color code wires in the electrical system.

Question 58

How can a test lamp be used help locate a shorted or "overloaded" circuit?

Question 59

What is a wiring diagram and what kind of information is provided?

Question 60

Technician A says it may be necessary to route a new wire to bypass a damaged conductor. Technician B says to install a grommet anytime a wire passes through the body. Who is correct?

A) Technician A only
B) Technician B only
C) Both Technician A and B
D) Neither Technician A nor B