Deck 35: Electrical Wiring, Connector Terminal Repair

Question 1

What is the reason for using gold and platinum coated terminals in connectors in chassis electronic wiring?

A) minimize voltage drops
B) high resistance
C) increased profit margins
D) ease of assembly

Answer 1

minimize voltage drops

Question 2

When assembling a typical weatherproof connector, what do the wire core wings contact?

A) insulation
B) bared wire
C) terminal guide
D) connector seal

Answer 2

bared wire

Question 3

Before crimping a new terminal on a typical weatherproof connector assembly, which of the following should be done FIRST?

A) lock the terminal into the connector
B) bend the locking tang outward
C) force the locking tang flush
D) push the wire through the connector block

Answer 3

push the wire through the connector block

Question 4

When required to make butt connections on multiple wires within a harness, what should be done to avoid a bulge at the connection junctions?

A) use aluminum crimp connectors
B) hammer the connections flat
C) stagger the butt joints
D) use high tension shrink wrap

Question 5

What are the terminal contacts inserted to when assembling in a Deutsch type, barrel connector?

A) holding grommet
B) connector ports
C) terminal holes
D) setting gauge

Question 6

When soldering splice connectors, what type of solder should be used?

A) silver solder
B) pure lead solder
C) rosin core solder
D) pasted flux solder

Question 7

When sealing a butt splice with heat shrink conduit, what should be used to heat the conduit?

A) oxy-acetylene torch
B) propane torch
C) boiling water
D) heat gun

Question 8

Which of the following soldering methods is recommended when repairing wiring in electronic engine wiring harnesses?

A) use soldering gun to apply heat to the wire, then apply solder to the wire
B) use soldering gun to melt solder, then drizzle onto wire.
C) use a propane torch to heat wire, then apply solder
D) use a heat gun to heat wire, then apply solder to terminal

Question 9

If a multistrand copper cable has deteriorated so that only 10% of its strands are intact, what would you conclude after testing the cable with an ohmmeter either side of the deteriorated section?

A) Resistance was 10% specified value
B) Cable had failed
C) Resistance was 90% of specified value
D) Cable was OK

Question 10

In a standard SAE relay, which two terminals are used to energize the coil circuit?

A) 30 and 87a
B) 87a and 87
C) 85 and 86
D) 86 and 87

Question 11

When considering at the codes used for standard SAE relay assignments, which of the codes below correctly correlate the old and new SAE assignments?

A) 87 and 5
B) 87a and 3
C) 85 and 86
D) 85 and 4

Question 12

Technician A says that in a standard SAE relay, the common terminal assignment is identified by the numeric code 3. Technician B says that in a standard SAE relay, the control coil terminals are identified by numeric codes 4 and 5. Who is correct?

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

Question 13

Which of the following letter designations identifies SAE wiring sectors that handle the engine/fuel control and management circuits?

A) A
B) C
C) E
D) M

Question 14

Technician A says that in chassis wiring that observes the new SAE wiring standards, any white wire with an orange tracer indicates a protected circuit. Technician B says that over 100 different colors identify different wires used in the new SAE wiring standards. Who is correct?

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

Question 15

In chassis wiring that observes the new SAE wiring standards, what is indicated by a gray wire?

A) Unprotected circuit
B) Protected circuit
C) Chassis ground
D) CAN Bus Lo

Question 16

Technician A says that each wire used in trucks that comply with the new SAE chassis wiring standards must be identified by a alpha-numeric code. Technician B says that the new SAE chassis wiring standards require that each wire be identified by codes that appear printed every 10 cm apart. Who is correct?

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

Question 17

Which of the following is a means of 'protecting' a circuit so that it would be coded grey using SAE wiring protocols?

A) fuse
B) cycling circuit breakers
C) non-cycling circuit breakers
D) all of the above

Question 18

When a non-cycling circuit breaker trips open, specifically what prevents the armature from closing when it cools?

A) heat from an integral resistor
B) residual heat from the current overload
C) pressure from a latching spring
D) control coil

Question 19

Technician A says that four-terminal relays are commonly used in truck wiring today. Technician B says that a four-terminal relay eliminates the normally-closed (NC) option used on a five-terminal relay. Who is correct?

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

Question 20

Technician A says that most OEMs today no longer produce hard-copy wiring schematics. Technician B says that virtual schematics are easier to use because they are often interactive. Who is correct?

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

Question 21

Where would you be likely to find virtual wiring schematics?

A) OEM SIS
B) generic diagnostic software
C) DVD-ROM
D) service manual

Question 22

Which of the following would be more likely to occur in a truck using SAE wiring codes, if you attempted to connect a gray colored wire with a red colored wire?

A) blown fuse
B) tripped cycling circuit breaker
C) nothing
D) a fire

Question 23

Technician A says that in a truck using virtual circuit protection devices, the circuit is tripped open when logic analysis of the circuit conditions determines that it is overloaded. Technician B says that when a virtual fuse trips open, it must be replaced by another using the identical OEM part number. Who is correct?

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

Question 24

You are testing an energized solenoid in a series circuit using a voltmeter and identify the following circuit conditions:
Voltage measured from solenoid positive terminal to chassis ground: 12.6 V-DC
Voltage measured from solenoid negative terminal to chassis ground: 4.0 V-DC
Voltage dropped across solenoid positive to negative terminals: 8.5 volts
Where is the problem in the circuit likely to be found?

A) On the positive side of the load
B) On the negative side of the load
C) The load (solenoid)
D) No circuit problem based on this data

Question 25

You are testing a running motor in a series circuit using a voltmeter and identify the following circuit conditions:
Voltage measured from motor positive terminal to chassis ground: 8.6 V-DC
Voltage measured from motor negative terminal to chassis ground: 0 V-DC
Voltage dropped across motor positive and negative terminals: 8.6 volts
Where is the problem in the circuit likely to be found?

A) On the positive side of the load
B) On the negative side of the load
C) The load (motor)
D) No circuit problem based on this data

Question 26

You are testing an energized solenoid in a series circuit using a voltmeter and identify the following circuit conditions:
Voltage measured from solenoid positive terminal to chassis ground: 12.6 V-DC
Voltage measured from solenoid negative terminal to chassis ground: 0.1 V-DC
Voltage dropped across solenoid positive to negative terminals: 12.5 volts
Where is the problem in the circuit likely to be found?

A) On positive side of load
B) On negative side of load
C) The load (solenoid)
D) No circuit problem based on this data