Deck 7: Transmission Components

Question 1

Choose the statement that correctly describes the function of a front hydraulic pump.

A) It continuously supplies fluid under pressure to the transmission system.
B) It supplies fluid only when required.
C) It supplies fluid even when the engine is not running.
D) It supplies fluid only when changing gears.

Answer 1

A

Question 2

The front pump bushing should be replaced in all of the following instances except:

A) when overhauling a transmission.
B) when replacing a torque converter.
C) when replacing a leaking front pump seal.
D) when the output shaft seal is leaking.

Answer 2

D

Question 3

Tech A states that most modern transmissions have a rear pump for lubrication. Tech B states that transmissions utilize a hydraulic pump for both pressure and lubrication. Who is correct?

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

Answer 3

B

Question 4

Modern automatic transmission cases are made of:

A) cast iron.
B) lightweight aluminum.
C) steel.
D) copper.

Question 5

Painting a transmission serves all of the following purposes except:

A) to help identify a transmission that was previously rebuilt.
B) to fill in any case porosity.
C) to help identify the transmission model.
D) to help seal the transmission after it has been cleaned.

Question 6

The component used to measure vehicle speed that can be located in the external housing is:

A) the governor assembly.
B) a servo.
C) a drive shaft.
D) a transfer case.

Question 7

Lip seals are made out of:

A) Teflon.
B) neoprene rubber.
C) cast iron.
D) neoprene.

Question 8

Clogging-up of the internal passages of the transmission is caused when the seals are lubricated with:

A) automatic transmission assembly lubricant.
B) petroleum jelly.
C) grease.
D) automatic transmission fluid.

Question 9

Tech A states that lip seals are commonly used in automatic transmissions. Tech B states that some seals require special tools to install. Who is correct?

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

Question 10

Choose the correct statement with respect to the function of a flexplate and its components.

A) A flexplate is used in the manual transmission.
B) The large mass of the torque converter dampens the engine pulses in a flywheel.
C) If the ring gear wears out, it can be replaced individually.
D) Ring gears should be welded to the torque converter.

Question 11

Tech A states that automatic transmissions all have the starter ring gear installed on a flexplate. Tech B states that automatic transmissions use a flywheel with a ring gear for starting the car. Who is correct?

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

Question 12

Choose the correct statement.

A) Drums or shells are not a part of the spinning assembly.
B) Planetary gears and sun gear are mounted outside of a drum.
C) The drum is splined to the sun gear, ring gear, or the planet carrier.
D) If the drum contains a multiple disc clutch in it, it is called a shell.

Question 13

Choose the correct statement with respect to the spring in a parking pawl.

A) It will cause a loud ratcheting noise.
B) It will prevent rotation of the output shaft when it is engaged.
C) It can be released with a scan tool.
D) It is designed to help minimize damage to the parking pawl and the output shaft.

Question 14

Tech A says that snap rings need to be replaced if they are worn out. Tech B says that snap rings are not required to be reinstalled into the transmission because they were only used for the initial assembly process. Who is correct?

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

Question 15

Tech A states that vehicles will have a parking pawl mechanism on the input shaft of the transmission. Tech B states that some vehicles will have a computer-controlled parking pawl. Who is correct?

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

Question 16

Tech A states that all automatic transmissions will utilize dog clutches for some gear ratios. Tech B states that many transmissions use multidisc clutches to hold planetary gear set components. Who is correct?

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

Question 17

Tech A states that bushings should be checked for wear during an overhaul and replaced if needed. Tech B states that ALL bushings should be replaced during an overhaul. Who is correct?

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

Question 18

Tech A states that some vehicles will include a transmission fluid warmer to help prevent wear in the transmission. Tech B states that all transmissions will have a transmission fluid cooler. Who is correct?

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

Question 19

Tech A states that the torque converter allows a vehicle to remain in gear at a stop light. Tech B states that a torque converter changes engine torque into horsepower. Who is correct?

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

Question 20

Tech A states that transaxles will have a differential assembly built into the transmission to allow the output shafts to spin at different speeds. Tech B states that transaxles will have a final drive gear set built into the transmission. Who is correct?

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

Question 21

The input shaft is driven by the __________ inside of the torque converter.

A) stator
B) turbine
C) front pump
D) differential

Question 22

The input shaft is splined to lock into the front pump.

Question 23

The __________ is the component that will deliver the torque from the transmission to either the driveshaft or the axle shafts.

A) stator
B) input shaft
C) turbine
D) output shaft

Question 24

On most vehicles, the stator support is built into the front pump.

Question 25

Technician A says that the stator support fits directly into the torque converter. Technician B says that while the stator support is located in the front pump housing, it does not turn inside the front pump. Who is correct?

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

Question 26

The parking pawl is attached to which component?

A) Stator
B) Differential
C) Output shaft
D) None of the above

Question 27

The differential is located in the transmission assembly on transaxles, which are used mostly on rear wheel drive vehicles.

Question 28

Technician A says that a differential allows power to be sent unequally to one drive axle. Technician B says that the differential uses a series of gears to transfer power to the wheel with the most traction. Who is correct?

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

Question 29

The differential in a transmission transaxle allows the power to be split between the two front wheels.

Question 30

On an RWD vehicle, the output shaft will have long splines to allow the driveshaft to slide in and out of the rear of the transmission.

Question 31

In a computerized transmission, which of the component below replaces the governor?

A) Transmission control module (TCM)
B) Power train control module (PCM)
C) Vehicle speed sensor (VSS)
D) Throttle position sensor (TPS)

Question 32

Which sensor do some manufacturers compare to the input shaft speed sensor to measure the amount of time required to complete the shift from one gear to another?

A) Crankshaft position sensor
B) Engine coolant temperature sensor
C) Wheel speed sensor
D) Output shaft speed sensor

Question 33

What type of variable resistor used in a Throttle Position Sensor (TPS)?

A) Thermistor
B) Pressure transducer
C) Potentiometer
D) None of the above

Question 34

Which of the following sensors is a potentiometer design?

A) Line pressure sensor
B) Throttle position sensor
C) Transmission fluid temperature sensor
D) Transmission range switch

Question 35

Which of the following sensors measures the actual amount of air coming into the engine, so the Powertrain Control Module (PCM) can accurately inject the proper amount of fuel.

A) MAF
B) MAP
C) TPS
D) VAF

Question 36

Which of the following sensor designs can be used as Crankshaft Position Sensors (CKP)?

A) A magnetic pickup sensor
B) A Hall-Effect sensor
C) An optical-style sensor
D) All of the above

Question 37

Which of the following sensors can the Powertrain Control Module (PCM) use to determine engine speed?

A) Crankshaft position (CKP) sensor
B) Throttle position sensor (TPS)
C) Input shaft speed sensor (ISS)
D) Vehicle speed sensor (VSS)

Question 38

When the Powertrain Control Module compares the Crankshaft Position Sensor (CKP) sensor signal to the Input Shaft Speed (ISS) sensor in the transmission, what does the difference between these two sensors indicate?

A) Transmission clutch slippage
B) Engine misfire
C) Torque converter slippage
D) Wheel slip

Question 39

Which of the following sensors does the Powertrain Control Module (PCM) compare to the input shaft speed sensor to determine the amount of torque converter slippage and to control the lockup of the Torque Converter Clutch (TCC).

A) CKP sensor
B) MAF sensor
C) MAP sensor
D) None of the above

Question 40

The PCM monitors the TPS sensor along with the VSS to determine a driver's ________.

A) Driving pattern
B) Adaptive memory
C) Identification
D) Environment

Question 41

Which of the following sensors is a variable resistor called a potentiometer?

A) Throttle position sensor
B) Vehicle speed sensor
C) Transmission fluid temperature sensor
D) None of the above

Question 42

Which of the following sensors is the same design as the Transmission Oil Temperature (TOT) sensor?

A) Throttle Position Sensor (TPS)
B) Engine Coolant Temperature (ECT) sensor
C) Accelerator Position Pedal Sensor (APPS)
D) Line Pressure Sensor

Question 43

Which of the following sensors can be used by the Powertrain Control Module (PCM) to judge engine load?

A) Manifold absolute pressure (MAP)
B) Accelerator Pedal Position Sensor (APPS)
C) Mass airflow (MAF)
D) Both A and C

Question 44

Which of these sensors cannot be used to determine engine speed?

A) Vehicle Speed Sensor (VSS)
B) Crankshaft Position Sensor (CKP)
C) Input Shaft Speed Sensor (ISS)
D) Either A and C

Question 45

Which of the following sensors is used to determine engine speed?

A) Vehicle Speed Sensor (VSS)
B) Crankshaft Position (CKP) Sensor
C) Throttle Position Sensor (TPS)
D) Input Shaft Speed Sensor (IPS)

Question 46

Which of the following provides a way to measure engine load?

A) Throttle valve pressure
B) Engine manifold vacuum
C) Staged governor pressure
D) Modulator pressure

Question 47

A vehicle comes in with the check engine light on. The vehicle is scanned and has transmission ratio error codes for 1st, 2nd, 3rd, and 4th gears (i.e. all forward gears). Technician A says that the problem could be a faulty output shaft speed sensor. Technician B says that the problem could be a faulty transmission front pump. Who is correct?

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

Question 48

Which of the following describes the operation of a reed switch?

A) The switch applies a ground to a wire coming from the power train control module (PCM).
B) The magnet in the reed switch assembly induces a voltage that is sent to the PCM
C) The switch allows a voltage to pass from a voltage source, through the reed switch, to the PCM.
D) Either A or C

Question 49

Which of the following is another name for the input shaft speed sensor?

A) Torque converter speed sensor
B) Turbine speed sensor
C) Impeller speed sensor
D) Shift time sensor

Question 50

Which of the following input shaft speed sensor designs does not require a reference voltage to operate?

A) Magnetic pickup
B) Reed switch
C) Both A and B
D) None of the above

Question 51

Technician A says that transmissions with an input shaft speed sensor and a Vehicle Speed Sensor (VSS) can use this information to determine shift solenoid failure. Technician B says the input shaft speed sensor may also be called a turbine speed sensor. Who is correct?

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

Question 52

Which of the following provides input shaft speed data to the Powertrain Control Module (PCM)?

A) Vehicle speed sensor
B) Turbine speed sensor
C) Output shaft speed sensor
D) Impeller speed sensor

Question 53

What type of variable resistor are Transmission Fluid Temperature Sensors?

A) Photoresisor
B) Potentiometer
C) Thermistor
D) None of the above

Question 54

What type of resistor is a transmission fluid temperature sensor?

A) Thermistor
B) Rheostat
C) Potentiometer
D) Tapped resistor

Question 55

The Powertrain Control Module (PCM) or Transmission Control Module (TCM) varies shift timing and pressure based upon the Transmission Fluid Temperature (TFT) sensor readings.

Question 56

Looking at the transmission fluid temperature (TFT) sensor value on the scan tool, which of the following values should the TOT match after the vehicle has been left overnight?

A) Ambient temperature
B) Engine coolant temperature
C) Intake air temperature
D) All of the above

Question 57

What kind of variable resistor is a transmission oil temperature (TOT) sensor?

A) Thermistor
B) Variable Voltage Resistor
C) Transistor
D) Zener Resistor

Question 58

Technician A says that the Powertrain Control Module (PCM) or Transmission Control Module (TCM) varies shift timing and pressure based upon the transmission fluid temperature (TFT) sensor readings. Technician B says that TOT readings can typically be viewed using a scan tool. Who is correct?

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

Question 59

Which of the following is the type of sensor used to measure transmission line pressure?

A) Pressure transformer
B) Pressure transducer
C) Photoresistor
D) Potentiometer

Question 60

The line pressure sensor in an automatic transmission is supplied with reference voltage from the PCM.

Question 61

In an electronically controlled automatic transmission, which of the following sensors changes resistance based upon the regulated hydraulic pressure output from the front pump?

A) Transmission pressure switch
B) Transmission fluid temperature switch
C) Line pressure sensor
D) None of the above

Question 62

A line pressure sensor is a transducer that varies resistance with the pressure applied to the sensor element.

Question 63

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

Question 64

Which of the following are two other names commonly used for the manual lever position (MLP) switch?

A) Transmission Range Switch or Neutral Safety Switch
B) Neutral Safety Switch or Park Position Switch
C) Transmission Range Switch or Park Position Switch
D) Park Position Switch or Reverse Switch

Question 65

The manual lever position (MLP) is often mounted directly on the automatic transmission case where the shift linkage connects to the transmission.

Question 66

Technician A says the manual lever position (MLP) switch is sometimes called a transmission range switch or a neutral safety switch. Technician B says a MLP switch is a multi-position switch that sends a signal to the power train control module (PCM) regarding which gear the manual lever is in. Who is correct?

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

Question 67

Technician A says the manual lever position (MLP) switch is sometimes called a transmission range switch or a neutral safety switch. Technician B says a MLP switch monitors transmission fluid levels. Who is correct?

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

Question 68

Technician A says electronically controlled transmissions use Electronic Pressure Control (EPsolenoids to control shift timing. Technician B says when looking at electronic pressure control solenoids with a digital storage oscilloscope (DSO); the voltage pattern would be a square wave. Who is correct?

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

Question 69

Technician A says on computerized transmissions, an electronic pressure control (EPsolenoid is used to regulate transmission line pressure. Technician B says most EPC solenoids are pulse-width modulated. Who is correct?

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

Question 70

Torque multiplication within a torque converter is automatically adjusted, within design limits, by the difference in speed between the impeller and turbine.

Question 71

When the engine accelerates, higher impeller speed discharges the fluid across and against the turbine vanes. What happens when the oil strikes the turbine vanes?

A) The turbine to begins to spin
B) Torque is transferred to the input shaft of the transmission
C) Both A and B
D) Neither A nor B

Question 72

Which of the following describes torque multiplication in a torque converter?

A) Increases with turbine speed
B) Is maximum at converter stall
C) Decreases with impeller speed
D) Both A and B

Question 73

Which valve modulates pressure in proportion with vehicle speed?

A) Throttle valve
B) Governor valve
C) Converter pressure regulator
D) Modulator valve

Question 74

Which of the following was used to connect the engine crankshaft to the input shaft of early automatic transmissions?

A) Fluid coupling
B) Torque converter
C) A dry plate clutch
D) A wet plate clutch

Question 75

Technician A says that a torque converter is located between the engine and the transmission. Technician B says that a torque converter performs a similar function as a clutch in a manual transmission. Who is correct?

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

Question 76

A __________ is a coupler used in place of a torque converter that is basically two fans facing each other.

A) front pump
B) fluid coupler
C) slip disc
D) flex plate

Question 77

A transmission fluid warmer is used to warm up the fluid quickly.

Question 78

Technician A says that a lock up converter is used to achieve a 1:1 speed ratio between the engine and the transmission input shaft. Technician B says that lock up only occurs at higher road speeds. Who is correct?

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

Question 79

The torque converter can multiply torque from the engine to the input shaft of the transmission when required by driving conditions.

Question 80

The __________ is the major control for the automatic transmission.

A) ECM
B) governor
C) valve body
D) none of the above