Deck 12: In-Vehicle Transmission Repairs

Question 1

When diagnosing problems in the transmission:

A) assume the fault.
B) ignore the customer's point of view.
C) take a quick decision based on visual inspection.
D) use accurate service information.

Answer 1

D

Question 2

When using a scan tool to monitor electronic components inside and outside of the transmission during a road test, which of the following precautions has to be taken?

A) Wear insulated gloves and arm sleeves.
B) Check if tires are in perfect balance.
C) Do not use the movie feature of a scan tool.
D) Do not drive with a scan tool in front of an airbag.

Answer 2

D

Question 3

When a customer describes a slipping transmission as a complaint, what test is the best way to verify?

A) Fluid test
B) Visual inspection
C) Road test
D) Scan of computer for codes

Answer 3

C

Question 4

Which test stresses the drivetrain so much that many manufacturers do not recommend performing it?

A) Hydraulic pressure test
B) Stall test
C) Fluid test
D) Road test

Question 5

To check the pump operation, what test should the technician conduct?

A) Leak check
B) Air checking
C) NVH test
D) Hydraulic pressure test

Question 6

Tech A says that the fluid level in many automatic transmissions is checked with the engine idling and the transmission in park. Tech B says that some manufacturers don't provide a dipstick to check the automatic transmission fluid (ATF) level. 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 when changing the fluid and filter, the presence of a small amount of clutch material in the pan is normal. Tech B says that if the pan gasket is leaking, you should tighten the pan bolts about a quarter turn at a time until the leak stops. Who is correct?

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

Question 8

Tech A says that performing a stall test can reveal slippage within the torque converter or transmission. Tech B says that a stall test can damage some transmissions and should not be performed on all transmissions. Who is correct?

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

Question 9

Tech A says that commanding shift solenoids on and off, one at a time, is an example of focused testing. Tech B says that test driving the vehicle is an example of verifying the customer's concern. Who is correct?

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

Question 10

All of the following can be replaced during in-vehicle transmission repairs except:

A) vehicle speed sensor.
B) shift solenoids.
C) sun gear.
D) extension housing bushing.

Question 11

Having access to what would allow the technician to test drive the vehicle in the repair shop?

A) Scan tool
B) Pressure tester
C) Chassis dynamometer
D) Modulator

Question 12

All of the following are very critical while doing a test drive except:

A) avoiding testing the transmission in different gear ranges.
B) recording the results for further analysis.
C) testing the transmission during light, medium, and hard acceleration.
D) testing the transmission in many different operating conditions.

Question 13

Tech A says that when checking line pressure, the engine should be off. Tech B says that low line pressure can be caused by a worn pump. Who is correct?

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

Question 14

Tech A says that low line pressure can be caused by a plugged transmission vent. Tech B says that high line pressure is caused by a restricted filter. Who is correct?

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

Question 15

Tech A says that increasing the transmission fluid level from the add mark to the full mark typically requires a quart of fluid, just like with engine oil. Tech B says that when checking for automatic transmission fluid leaks, you should also remove the radiator cap and look for ATF in the radiator, Who is correct?

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

Question 16

Tech A says that when checking the fluid level on the dipstick, always read the highest level on either side. Tech B says that when reinstalling the pan, start all of the bolts before tightening any of them. Who is correct?

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

Question 17

Tech A says that powertrain mounts hold the powertrain firmly in place and prevent the engine from moving at all. Tech B says that the life of rubber powertrain mounts is reduced by being saturated with oil from a leak. Who is correct?

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

Question 18

As part of general transmission maintenance, all of the following should be done except:

A) checking transmission fluid.
B) disassembling and checking the transmission.
C) locating leaks.
D) replacing filters.

Question 19

Which of these is an invaluable tool for testing a TCC on an electronically controlled transmission?

A) Pressure gauge
B) Factory scan tool
C) NVH analyzer
D) Specialty tool

Question 20

Tech A says that using a scan tool to activate the TCC, with the engine idling in drive and the brakes applied, is a typical troubleshooting task. Tech B says that diagnosis is a waste of time on a faulty transmission because it will be rebuilt anyway. Who is correct?

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

Question 21

Technician A says that the cooler and cooler lines should be flushed as part of a transmission rebuild. Technician B says that if the cooler is not flushed oil returning from the cooler can carry debris into the torque converter, and cause damage to it. Who is correct?

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

Question 22

What can a leaking automatic transmission fluid cooler cause?

A) A transmission to fail from a low fluid level
B) Antifreeze to be drawn into the cooler from the radiator, contaminating the transmission fluid
C) Transmission fluid to leak into the radiator contaminating the antifreeze
D) All of the above

Question 23

Blocked transmission coolers can starve which of the following transmission circuits?

A) Torque converter clutch circuit
B) Throttle pressure circuit
C) Governer pressure circuit
D) Transmission lubrication circuit

Question 24

Technician A says it is critical to clean and inspect the transmission fluid cooler and lines. Technician B says metal particles and clutch material can become stuck inside the fluid cooler or fluid cooler lines. Who is correct?

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

Question 25

Technician A says you can clean a transmission cooler and lines using the shop's parts cleaning tank. Technician B says you can clean a transmission cooler and lines with an aerosol flushing kit. Who is correct?

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

Question 26

Before installing a new or rebuilt transmission, which of the following must be carefully cleaned and inspected?

A) Transmission oil cooler.
B) Rear differential .
C) Transfer case mating surface.
D) None of the answers listed

Question 27

Transmission coolers can be cleaned by:

A) an aerosol flushing kit.
B) compressed air.
C) detergents.
D) rust inhibitors.

Question 28

Which of the following is a good first step in diagnosis of any transmission concern?

A) Scan for computer codes
B) Test drive
C) Fluid level and condition check
D) Transmission fluid flush

Question 29

Typically, a technical service bulletin (TSB) contains which of the following information?

A) Updated programming
B) Updated parts
C) Updated test procedures
D) All of the above

Question 30

Technician A states that whenever possible, you should always test-drive a vehicle to verify the reported problem. Technician B states that before road testing, the transmission fluid level and condition should be checked. Who is correct?

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

Question 31

Which of the following can cause low line pressure in an automatic transmission?

A) Internal leaks in the transmission
B) Pressure regulator stuck closed
C) Worn clutch pack
D) All of the above

Question 32

Which of the following can cause higher than normal line pressure in an automatic transmission?

A) Stuck closed pressure regulator valve
B) Failed torque converter clutch
C) Cut lip seal on a clutch piston
D) None of the answers listed

Question 33

Which of the following is typically the first step in diagnosis of an automatic transmission concern?

A) Scan for computer codes
B) Test drive
C) Fluid check
D) None of the above

Question 34

When diagnosing an automatic transmission problem, it is important to first verify the customer concern by taking the vehicle on a road test, if possible.

Question 35

Most automotive repair shops have access to a chassis dynamometer that would allow them to "test-drive" a vehicle while keeping the vehicle in the shop.

Question 36

Which of the following checks evaluates torque converter operation and also checks the transmission for slippage?

A) Cooler flow test
B) Air check
C) Fluid check
D) Stall test

Question 37

Which of the following is heavily loaded during a stall test?

A) Engine
B) Transmission
C) Brake system
D) All of the above

Question 38

In order to prevent severe transmission damage, what is the maximum length of time a stall test should be performed?

A) 5 seconds
B) 10 seconds
C) 15 seconds
D) 20 seconds

Question 39

Most vehicle manufacturers do not recommend stall testing on late-model vehicles, as it can damage the transmission.

Question 40

The automotive technician should not perform a stall test if there is an engine problem, such as worn engine bearings, broken power train mounts, or an engine overheating condition.

Question 41

Which of the following are steps in a stall test?

A) Apply the park and service brakes fully
B) Place the engine in the specified gear
C) Run the engine at wide open throttle and record the maximum RPM
D) All of the above

Question 42

On electronically controlled transmissions, testing the transmission's hydraulic pressure may involve using a factory scan tool to actuate the Electronic Pressure Control (EPC) solenoid in order to check if the Powertrain Control Module (PCM) can vary the line pressure.

Question 43

To perform a proper diagnosis of an automatic transmission concern, a technician will always have to perform a pressure test of the transmission's hydraulic system.

Question 44

If you are expecting a reading of 120 pounds per square inch (psi) (827 kilopascals [kPa]) while you are pressure testing an automatic transmission and you select a gauge that reads up to 400 psi (2,758 kPa), you may not get an accurate reading.

Question 45

If an automatic transmission has a large amount of oil and dirt on it, locating a fluid leak may require cleaning the transmission case. Which of the following is the best way to clean the case?

A) Engine degreaser and pressure washer
B) Pressure washer and mineral spirits
C) Gasoline and compressed air
D) Dish soap and water

Question 46

UV dye should never be used to locate the source of transmission leaks.

Question 47

After installing leak detection dye in an automatic transmission and running the transmission for a few minutes, any leaking dye should be visible with a black light.

Question 48

Some automatic transmission seals, such as the extension housing seal, may require the replacement of a bushing to properly repair the leak and keep the seal from a repeat failure.

Question 49

An automatic transmission fluid leak can result in the failure of the transmission due to a high fluid level.

Question 50

Failed powertrain mounts may cause a loud thumping noise. Which of the following operating conditions might this noise due to bad mounts be most prominent?

A) When applying the accelerator in drive
B) When applying the accelerator in reverse
C) When coasting and braking
D) All of the above

Question 51

Hydraulic power train mounts use silicone hydraulic fluid that is squeezed back and forth between three chambers, similar to the design of a shock absorber.

Question 52

How will transmission fluid and other fluids coming into contact affect the rubber in the power train mounts?

A) Transmission fluid will cause the rubber to crack
B) Transmission fluid will cause the rubber to harden
C) Transmission fluid will cause the rubber to soften
D) Transmission fluid will cause the rubber to shrink

Question 53

All hydraulic mounts use a computer-controlled electronic control valve that can open an alternate passageway or vary the size of the orifice inside the mount.

Question 54

Technician A says that performing a stall test can reveal slipping within the torque converter or transmission. Technician B says that a stall test can damage some transmissions and should not be performed on all transmissions. Who is correct?

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

Question 55

Technician A says that when checking line pressure, the engine should be off. Technician B says that when checking line pressure, the engine should be running. Who is correct?

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

Question 56

Technician A says that low line pressure can be caused by a plugged transmission vent. Technician B says that high line pressure is caused by a restricted filter. Who is correct?

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

Question 57

The stall test to check torque converter operation is not recommended by all manufacturers to diagnosis a transmission problem.

Question 58

Which of the following is possible if during a stall test, the engine rpm is higher in all gears?

A) Faulty pump
B) Internal pressure leak
C) Clogged filter
D) All of the above

Question 59

During a torque converter stall test, if engine rpm are lower than the specified rpm, it indicates one of two problems: either the engine has a problem or the torque converter has an internal malfunction.

Question 60

Technician A says to check the effect of throttle pressure on the boost valve, you do not need to disconnect the throttle cable or linkage. Technician B says to check the effect of throttle pressure on the boost valve, you need to connect a pressure gauge to the transmission line pressure test port. Who is correct?

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

Question 61

How high may line pressure be in reverse gear?

A) As high as 200 psi
B) As high as 300 psi
C) As high as 400 psi
D) As high as 500 psi

Question 62

Which of the following tests evaluate the transmission pump operation, the pressure regulator function, and the seals and gaskets inside the transmission?

A) Scan tool test
B) Hydraulic pressure test
C) Fluid level check
D) Converter flow check

Question 63

In which of the following hydraulic circuits will there most likely be a pressure test port?

A) Line pressure circuit
B) Torque converter circuit
C) 3rd Gear circuit
D) All of the above

Question 64

Which of the following is a common cause low line pressure in a transmission?

A) Weak or worn front pump
B) Faulty pressure regulator system
C) Internal leaks in the transmission
D) All of the above

Question 65

Which of the following can cause higher than normal line pressure in an automatic transmission?

A) Stuck pressure regulator valve
B) Failed governor valve
C) Failed electronic pressure control (EPC) solenoid
D) Both A and C

Question 66

Technician A says powertrain mounts hold the engine and transmission in proper position in the vehicle. Technician B says a faulty powertrain mount cannot affect throttle linkage. Who is correct?

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

Question 67

Technician A says powertrain mounts wear out over time. Technician B says fluid leaks can cause powertrain mounts to get soft and separate. Who is correct?

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

Question 68

Which of the following is a method of checking engine and transmission mounts?

A) Prying the engine and transmission to see if the mounts are separated or torn
B) Putting the vehicle in gear and applying the brake slowly and check for engine movement
C) Putting the vehicle in forward and reverse while slowly applying the throttle and watching for engine movement
D) Either A or C

Question 69

Technician A says when diagnosing a torque converter clutch (TCC) solenoid problem, you should use a scan tool to identify any diagnostic trouble codes (DTCs) the powertrain control module (PCM) has identified related to the TCC circuit. Technician B says when checking the resistance of the TCC solenoid through the connector and the resistance is out of specifications, the problem could be the solenoid or wires to the solenoid inside the transmission pan. Who is correct?

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

Question 70

During a stall test, the engine rpm is higher than expected in all gears. Which of the following could be the cause?

A) Faulty pump
B) Internal pressure leak
C) Clogged filter
D) All of the above

Question 71

Many automotive manufactures do not recommend performing a ______ test to automatic transmissions.

A) Stall
B) Pressure
C) Leak
D) Air

Question 72

Which of the following automatic transmission circuits usually has a pressure test port?

A) Modulator circuit
B) Governor circuit
C) Throttle valve circuit
D) All of the answers listed

Question 73

Technician A says powertrain mounts are typically made out of solid steel or aluminum to withstand the power of the engine. Technician B says fluid leaks can cause powertrain mounts to get soft and become faulty. Who is correct?

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

Question 74

Which of the following is not a method of checking engine and transmission mounts?

A) Using a pry bar to carefully push on the engine and transmission while looking for movement.
B) Applying the brakes, putting the vehicle in drive and applying the throttle slowly while looking for excessive movement.
C) Applying the brakes, putting the vehicle in reverse and applying the throttle slowly while looking for excessive movement.
D) Rocking the steering wheel while driving about 100 MPH while looking for excessive movement.

Question 75

Hydraulic-style power train mounts are _______ rubber mounts and may be available only through the manufacturer.

A) About the same price as
B) Much more expensive than
C) Much less expensive than
D) More widely available than

Question 76

Hydraulic mounts use _______ fluid that is squeezed back and forth between two chambers, similar to the design of a shock absorber.

A) Silicone hydraulic
B) Automatic transmission
C) Power steering
D) DOT 3 brake

Question 77

The _______ hold the engine and transmission in the proper position in the vehicle.

A) Powertrain mounts
B) Suspension hydraulics
C) Torsion bar
D) Leaf springs

Question 78

If a vehicle has a broken powertrain mount, what symptoms might a customer us to describe their concern?

A) Loud thump when starting from a stop or when braking
B) Engine not starting
C) Vibration that increases with road speed
D) Won't shift into gear

Question 79

A technician who does not have the ability to diagnose a transmission failure may incorrectly recommend transmission replacement or overhaul.

Question 80

During the test-drive of a vehicle with a suspected automatic transmission concern, it is critical to place the transmission in the same operating conditions as the customer stated the problem occurred in.