Question 1

Technician A says DTCs can be set by out of range signals from electronic components. Technician B says remember to determine if the problems causing a DTC are hydraulic or mechanical related. Who is correct?

Accepted Answer

Both technicians are correct. Technician A is right because DTCs can be set by out of range signals from electronic components. Technician B is also right because it is important to determine if the problem causing the DTC is hydraulic or mechanical related in order to accurately diagnose and fix the issue.

Question 2

Technician A says the only time an ammeter is used for testing is when the power for the circuit is disconnected. Technician B says when testing a circuit, the ammeter is always connected in series with the circuit. Who is correct?

Accepted Answer

Technician B is correct because an ammeter must be connected in series with the circuit to measure the current flowing through it. Technician A is incorrect because an ammeter is specifically designed to be used while the circuit is powered to measure current.

Question 3

Technician A says the first step in checking transmission electrical controls is to verify system voltage. Technician B says when no DTCs are present then diagnose the transmission based on its symptoms. Who is correct?

Accepted Answer

Technician A is correct because the first step in checking transmission electrical controls is to verify system voltage. Technician B is also correct because if there are no diagnostic trouble codes (DTCs), then the transmission should be diagnosed based on its symptoms. Therefore, both Technicians A and B are correct.

Question 4

Technician A says the oil from your skin can cause corrosion of electrical terminals. Technician B says do not remove a part from its protective package until it is time to install the part. Who is correct?

Accepted Answer

Technician A is correct because the oil from your skin can combine with other substances and cause electrical terminals to corrode. Technician B is also correct because removing a part from its protective package exposes it to potential damage from handling or the environment. Therefore, both technicians are correct.

Question 5

Radio frequency interference is a form of electromagnetic interference caused by low current flow.

Accepted Answer

Radio frequency interference is caused by high frequency signals interfering with other signals, not low current flow.

Question 6

Technician A says when checking voltage drops, the negative meter lead is connected to ground and the positive lead is connected to the component being tested. Technician B says the voltmeter is connected across the load with the circuit activated when testing voltage drops. Who is correct?

Accepted Answer

Technician B is correct. When testing voltage drops, the voltmeter should be connected across the load with the circuit activated to measure the voltage drop across the component. Technician A's method is incorrect for measuring voltage drops.

Question 7

Honda hybrids use an integrated motor assist system that combines a modified gasoline engine with a permanent magnet electric motor.

Accepted Answer

Honda hybrids do use an integrated motor assist system that combines a modified gasoline engine with a permanent magnet electric motor. This hybrid technology is used in models such as the Honda Insight and Honda Accord Hybrid.

Question 8

Technician A says when testing electronic circuits, a low impedance ohmmeter should be used. Technician B says semiconductors may be tested with an ohmmeter. Who is correct?

Accepted Answer

Technician B is correct because semiconductors can be tested with an ohmmeter. However, Technician A is incorrect because a high impedance ohmmeter should be used to avoid affecting the circuit being tested.

Question 9

A P0700 DTC means there are automatic transmission-related codes in addition to problems detected in the fuel and emission control systems.

Accepted Answer

A P0700 DTC specifically indicates that there are transmission control system/malfunction-related codes stored in the vehicle's computer, not issues with the fuel and emission control systems.

Question 10

Technician A says a pulse width modulated solenoid can be found in some converter control systems. Technician B says a PM generator-type solenoid, which allows for full time but controlled slip, is used in some converter control systems. Who is correct?

Accepted Answer

Pulse width modulated solenoids are indeed used in some converter control systems to control fluid flow and pressure.

Question 11

Technician A says before handling a component that is sensitive to electrostatic discharge, touch a known good ground. Technician B says before handling a component that is sensitive to electrostatic discharge, touch a known good power source. Who is correct?

Accepted Answer

Technician A is correct. Before handling a component that is sensitive to electrostatic discharge, it is important to touch a known good ground to discharge any static electricity that may have accumulated on your body. Touching a power source could actually generate static electricity and increase the risk of damaging the component.

Question 12

Technician A says the transmission fluid temperature sensor is located in the transmission cooling system. Technician B says transmission pressure switches can serve as feed-back sensors. Who is correct?

Accepted Answer

Transmission pressure switches can serve as feedback sensors, providing information about the hydraulic pressure within the transmission. However, the transmission fluid temperature sensor is typically located within the transmission itself, not in the cooling system.

Question 13

​When observing a Hall effect sensor on a lab scope; Technician A says pay attention to the downward and upward pulses; they should be at an angle. Technician B says if they appear straight this indicates the transistor is faulty, causing the voltage to rise slowly. Who is correct?

Accepted Answer

The answer of ​When observing a Hall effect sensor on...

Question 14

Technician A says when diagnosing a computer controlled transmission, the first step is to check all service information. Technician B says when diagnosing a computer controlled transmission, the first step is to verify the customer concern. Who is correct?

Accepted Answer

The first step in diagnosing any automotive issue, including a computer-controlled transmission, is to verify the customer concern to ensure the problem is accurately identified before consulting service information.

Question 15

Technician A says the signals from the transmission fluid temperature sensor affect the application of the converter clutch. Technician B says at excessive fluid temperature the TCm will command the clutch to unlock. Who is correct?

Accepted Answer

Technician A is correct that the signals from the transmission fluid temperature sensor affect the application of the converter clutch. Technician B is also correct that at excessive fluid temperature, the TCM (Transmission Control Module) will command the clutch to unlock. Therefore, both technicians are correct.

Question 16

Because of extremely high voltages, safety is of prime importance when working on or around hybrid vehicles.

Accepted Answer

Hybrid vehicles use high-voltage battery packs which can pose a serious safety hazard if handled improperly. Therefore, safety is absolutely crucial when working on or around these vehicles.

Question 17

Technician A says when testing a switch, a test light is used at the output of the switch in various switch positions. Technician B says when checking a switch, a voltmeter is used at the output of the switch in various switch positions. Who is correct?

Accepted Answer

Both technicians are correct. A test light or a voltmeter can be used to test a switch in different switch positions to determine if it is working properly.

Question 18

The definition of which term is "the operating resistance of an electrical device"?

Accepted Answer

Impedance is the operating resistance of an electrical device, which is the combined effect of resistance, capacitance, and inductance in an electrical circuit. Amplifying refers to the increase of a signal's amplitude, energy refers to the capacity of a physical system to perform work, and resistance refers to the opposition to the flow of electric current.

Question 19

The different hybrid systems present some changes to basic transmission design.

Accepted Answer

Hybrid systems combine internal combustion engines with electric motors, requiring modifications to transmission design to accommodate the integration of the two power sources.

Question 20

The shift solenoids offer two possible on/off combinations to control fluid to the various shift valves.

Accepted Answer

The answer of The shift solenoids offer two possible on/off...

Quiz 4: Transmission Electronics