Deck 10: Hydraulically Controlled Transmission

Question 1

The device that varies incoming line pressure using centrifugal force is known as:

A) vacuum modulator.
B) reverse boost valve.
C) governor.
D) throttle valve.

Answer 1

C

Question 2

Tech A says that governor pressure is controlled by torque converter rpm. Tech B says that governor pressure is controlled by output shaft speed. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Answer 2

B

Question 3

Tech A says that reciprocating force controls governor pressure. Tech B says that centrifugal force controls governor pressure. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Answer 3

B

Question 4

Tech A says that modifying governor weights will alter transmission shifting. Tech B says that excessive modification of the governor weights may cause the transmission to not shift. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 5

The vacuum modulator converts the engine vacuum signal into:

A) engine pressure.
B) line pressure.
C) governor pressure.
D) modulator pressure.

Question 6

Tech A says that a vacuum modulator converts manifold vacuum into an engine load signal. Tech B says that the manual valve is moved by governor pressure to force a shift. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 7

Tech A says that fluid pressure in an automatic transmission is controlled by engine rpm. Tech B says that modulator pressure changes with engine vacuum. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 8

All of the following statements are true except:

A) Throttle valves are located inside the transmission valve body.
B) As the throttle opening increases, throttle valve pressure decreases.
C) Increased throttle pressure delays the upshift.
D) Decreased throttle pressure allows upshifts.

Question 9

Harsh-shifting transmission could be caused:

A) when the line pressure is too high during normal cruising speeds.
B) when the line pressure is too low during low cruising speeds.
C) when the line pressure is too high during high cruising speeds.
D) if the line pressure is too low during normal cruising speeds.

Question 10

Tech A says that converter and cooler operate at line pressure. Tech B says that line pressure causes the manual valve to move during upshifts and downshifts. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 11

Tech A says that the throttle valve is controlled by a cable or linkage hooked to the engine throttle linkage. Tech B says that a misadjusted throttle valve cable can prevent wideopen throttle on an engine. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 12

Tech A says that line pressure is reduced during light throttle conditions to improve fuel economy. Tech B says that as the engine speeds up in rpm, the transmission line pressure gradually reduces to maintain clutch pack pressure. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 13

Which of the following has multiple lands designed to block or allow line pressure to pass to a band or clutch in order to apply the gear?

A) Kickdown valve
B) Throttle valve
C) Manual valve
D) Shift valve

Question 14

When the manual valve is in park position, the line pressure:

A) is able to flow past the valve to all other components of the transmission.
B) is not exhausted back to the transmission pan.
C) is not able to flow past the valve to any other components of the transmission.
D) increases past the threshold.

Question 15

All of the following statements with respect to transmission in first gear are correct except:

A) The manual valve moves, allowing line pressure to flow to port A of the 1-2 shift valve.
B) The governor sends fluid pressure to port B.
C) Port B is connected to the clutch or band that applies first gear.
D) Governor pressure increases linearly as vehicle speed increases.

Question 16

Tech A says that when governor pressure on one side of a shift valve overcomes spring pressure and throttle pressure on the other side, an upshift occurs. Tech B says when reverse boost pressure on one side of the reverse valve overcomes governor pressure on the other side, a shift into reverse occurs. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 17

In second gear the line pressure is allowed to flow from:

A) port A to port B.
B) port B to port D.
C) port A to port E.
D)port B to port C.

Question 18

When the governor pressure becomes great enough to overcome the spring pressure and the modulator/throttle valve pressure in the 2-3 shift valve, line pressure is allowed to flow to:

A) port B.
B) port D.
C) port C.
D)port E.

Question 19

More line pressure is needed and governor pressure and modulator pressure/throttle valve pressure are not used in:

A) first gear.
B) second gear.
C) third gear.
D) reverse.

Question 20

Tech A says that in reverse, governor pressure regulates line pressure. Tech B says that in reverse, modulator pressure regulates line pressure. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 21

Starting from a stop, along with the reverse gear's lower ratio, means the clutches and bands need to be held tighter to prevent slippage.

Question 22

In reverse, line pressure is allowed to flow from the manual valve directly into the clutch/band for reverse.

Question 23

Technician A says that governor pressure is used to control reverse. Technician B says that the throttle valve and vacuum modulator pressure is used to control reverse. Who is correct?

A) Technician A
B) Technician B
C) Both technicians
D) Neither technician

Question 24

When in reverse, governor pressure and throttle/modulator pressure are sent to the:

A) 2-3 shift valve.
B) low-reverse port.
C) transmission pan.
D) none of the above.

Question 25

Higher transmission line pressure is needed for reverse operation.

Question 26

There is only one speed for reverse in an automatic transmission.

Question 27

Technician A says that the manual valve will direct additional fluid under pressure to the pressure regulator valve. Technician B says the additional pressure from the pressure regulator will cause a higher line pressure in reverse. Who is correct?

A) Technician A
B) Technician B
C) Both technicians
D) Neither technician

Question 28

Governor and throttle/modulator pressure are not needed for reverse to operate and are exhausted right into the transmission pan.

Question 29

In reverse, there is fluid flow into both the 1-2 and 2-3 shift valves.

Question 30

Throttle pedal position will only increase vehicle speed in reverse and not governor pressure.

Question 31

Spring pressure to the regulator valve is increased by additional fluid from the manual valve.

Question 32

When the vehicle continues to accelerate, governor pressure:

A) increases
B) decreases
C) stays the same
D) none of the above

Question 33

With the vehicle in drive, the transmission is in second gear and increasing vehicle speed, governor pressure increases and overcomes 2-3 shift valve spring, closing off the port to the second gear clutch and opens the port to the:

A) first gear clutch
B) third gear clutch
C) OD clutch
D) low/reverse clutch

Question 34

Some vehicles use a combined 1-2 and 2-3 shift valve.

Question 35

Technician A says that when a transmission is in second gear, governor pressure increases causing fluid to stop flowing to the second gear clutch and into the third gear clutch. Technician B says that when a transmission is in third gear, and governor pressure decreases, the transmission will downshift into second gear. Who is correct?

A) Technician A
B) Technician B
C) Both technicians
D) Neither technician

Question 36

Technician A says that the 1-2 shift valve spring is stronger than the 2-3 shift valve spring. Technician B says the 2-3 shift valve spring is stronger than the 1-2 shift valve spring. Who is correct?

A) Technician A
B) Technician B
C) Both technicians
D) Neither technician

Question 37

When the transmission is in third gear, and the vehicle slows down, governor pressure will increase and allow the transmission to downshift.

Question 38

Technician A says that when in third gear and the vehicle speed drops, governor pressure will decrease and the transmission will downshift. Technician B says that when the accelerator is depressed fully, the throttle valve or vacuum modulator will add additional force to the shift spring and cause the transmission to downshift. Who is correct?

A) Technician A
B) Technician B
C) Both technicians
D) Neither technician

Question 39

Another name for a downshift that is caused by an increase in throttle pressure is called:

A) a boost valve shift.
B) a kickdown shift.
C) a torque shift.
D) a modulator shift.

Question 40

Technician A says that a transmission can only downshift from third into second in one shift. Technician B says that a transmission can shift from third into first in one shift. Who is correct?

A) Technician A
B) Technician B
C) Both technicians
D) Neither technician

Question 41

A transmission can prevent a downshift if the maximum rpm is too high.

Question 42

When the vehicle is in drive and the transmission shifts into second gear, line pressure is moving past the manual valve, around the 1-2 shift valve, and into the:

A) 2-3 shift valve
B) low-reverse port
C) transmission pan
D) none of the above

Question 43

When transmission is in second gear, fluid flows around the 1-2 shift valve and into the center of the 2-3 shift valve and then to the:

A) third gear clutch
B) first gear clutch or band
C) second gear clutch
D) None of the above

Question 44

When the second gear clutch has pressure going to it, the 2-3 shift valve has what pressure acting on it?

A) Governor pressure
B) 2-3 shift valve spring pressure
C) Both A and B
D) Neither A nor B

Question 45

If vehicle speed decreases, governor pressure decreases, allowing the transmission to downshift back into first gear.

Question 46

Technician A says that if throttle pressure increased enough in second gear, it could cause the transmission to downshift into first gear. Technician B says that by decreasing vehicle speed, this would cause a lower governor pressure, allowing the transmission to downshift into first gear. Who is correct?

A) Technician A
B) Technician B
C) Both technicians
D) Neither technician

Question 47

The shifting of a hydraulically controlled transmission is a constant push-pull between all of the following EXCEPT:

A) governor pressure
B) shift spring pressure
C) vacuum modulator/throttle valve pressure
D) boost valve pressure

Question 48

Technician A says that a vehicle can downshift by fully depressing the throttle, allowing full throttle pressure to overcome governor pressure. Technician B says that a vehicle may downshift when governor pressure drops below line pressure. Who is correct?

A) Technician A
B) Technician B
C) Both technicians
D) Neither technician

Question 49

A vehicle will upshift into second gear only when governor pressure exceeds which of the following?

A) Spring pressure
B) Throttle valve pressure
C) Vacuum modulator pressure
D) All of the above

Question 50

Governor pressure is the same on both the 1-2 shift valve and the 2-3 shift valve.

Question 51

Technician A says that a malfunctioning governor can cause a shifting problem between first and second gear. Technician B says that a broken shift valve spring can cause a shifting problem. Who is correct?

A) Technician A
B) Technician B
C) Both technicians
D) Neither technician

Question 52

Which of the following is a type of automatic transmission uses a mainshaft and counter shaft, similar to a manual transmission?

A) Conventional
B) Dual clutch
C) Dual shaft transmission
D) Continuously Variable trasnsmission

Question 53

When the transmission is first shifted into drive, fluid moves past the manual valve and into the:

A) 1-2 shift valve
B) 2-3 shift valve
C) transmission pan
D) throttle valve

Question 54

When the transmission is shifted into drive, fluid moves through the 1-2 shift valve and into the:

A) 2-3 shift valve
B) transmission pan
C) first gear clutch or band
D) none of the above

Question 55

As the vehicle accelerates, what component controls line pressure flowing past it?

A) The manual valve
B) The pressure regulator
C) The throttle valve
D) The governor

Question 56

With the vehicle in drive and accelerating, governor pressure is sent to the back side of the ____________ to counteract spring pressure?

A) governor
B) 1-2 shift valve
C) throttle valve
D) 2-3 shift valve

Question 57

The throttle valve or vacuum modulator adds force to the spring side of the 1-2 shift valve to act against governor pressure.

Question 58

When governor pressure exceeds 1-2 shift valve spring pressure, the port to the first gear clutch or band is shut, releasing it.

Question 59

Technician A says that the higher the engine load or the more the throttle is opened, the higher the line pressure. Technician B says that as vehicle speed increases, so does governor pressure. Who is correct?

A) Technician A
B) Technician B
C) Both technicians
D) Neither technician

Question 60

Governor pressure is always working against spring and line pressure.

Question 61

Line pressure is always working with spring pressure against governor pressure.

Question 62

Technician A says when the vehicle is in the park position, line pressure is able to flow past the manual valve to any components in the transmission. Technician B says when the vehicle is in the park position, line pressure is not able to flow past the manual valve to any components in the transmission. Which technician is correct?

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

Question 63

When the vehicle is first started in park, the fluid is not flowing to the __________.

A) transmission pan
B) transmission fluid filte
C) transmission pump
D) 2-3 shift valve

Question 64

When the transmission is in park, what component manages the pressure?

A) The manual valve
B) The pressure regulator
C) The throttle valve
D) The governor

Question 65

When the transmission is in park, line pressure cannot move past the:

A) manual valve
B) pressure regulator
C) throttle valve
D) governor

Question 66

When the transmission is in park, line pressure sent to the governor is sent to the:

A) 1-2 shift valve
B) 2-3 shift valve
C) transmission pan
D) throttle valve

Question 67

When the transmission is in park, line pressure sent to the throttle valve is sent to the __________ when the throttle is closed and the vehicle is under no load.

A) 1-2 shift valve
B) 2-3 shift valve
C) transmission pan
D) throttle valve

Question 68

When the transmission is in park, line pressure sent to the vacuum modulator is sent to the __________ when the throttle is closed and the vehicle is under no load.

A) 1-2 shift valve
B) 2-3 shift valve
C) transmission pan
D) throttle valve

Question 69

Throttle pressure has an effect on the transmission when the vehicle is in park.

Question 70

In park, there should be governor pressure found at the test port.

Question 71

In park, there should be no fluid movement past the manual valve.

Question 72

In a fully hydraulically controlled automatic transmission, the shift points are controlled by the vehicle's Powertrain Control Module (PCM) or a Transmission Control Module (TCM).

Question 73

Technician A says transmissions can prevent a downshift that would exceed the engine's maximum rpm. Technician B says reverse only uses one speed so line pressure is directly applied by the manual valve to the appropriate apply devices. Who is correct?

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

Question 74

When the driver starts the vehicle, the front pump draws fluid up from the _______, through the filter, and into the pump.

A) Pipe
B) Tank
C) Transmission pan
D) Storage

Question 75

The pressure regulator valve keeps the pressure at a regulated level by exhausting excess pressure back to the ________.

A) Pump
B) Transmission pan
C) Pipe
D) Valve

Question 76

When the manual valve is in the park position, line pressure:

A) is sent to the governor.
B) is exhausted back to the transmission pan.
C) is sent to the throttle valve.
D) does not flow to any other component

Question 77

Line pressure that is sent to the _______ is allowed to be exhausted back to the transmission pan when the vehicle is not moving and the governor is not creating any pressure.

A) Sump
B) Governor
C) Manual valve
D) Throttle valve

Question 78

When is the line pressure sent to the throttle valve, or vacuum modulator, exhausted to the transmission pan?

A) When the throttle is closed
B) When there is high engine load
C) When there is less engine load
D) When the throttle is open

Question 79

When the driver _______ the vehicle, the front pump draws fluid up from the transmission pan, through the filter, and into the pump.

A) Starts
B) Stops
C) Slows down
D) Speeds up

Question 80

The front pump sends fluid out under pressure to all of the following EXCEPT:

A) pressure regulator valve
B) throttle valve
C) the governor
D) transmission pan