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Exam 3: General Theories of Operation

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Question 31

Multiple Choice

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Technician A says the manual shift valve, which is located in the valve body, moves indirectly to the movement of the throttle pedal. Technician B says the manual shift valve in the transmission is moved by the gear selector lever and linkage. Who is correct?

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

E) A) and C)
F) B) and C)

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Question 32

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The speedometer drive assembly is geared to the input shaft.

A) True
B) False

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Question 33

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Define the function of the VSS.

The ____________________ is driven by the converter cover.

A change in tire diameter may affect transmission operation.

Technician A says that metal shavings collected on permanent magnet-style speed sensors may indicate an internal transmission problem. Technician B says that if the fluid is clean and only contains a small amount of residue, the transmission problem is most likely caused by something external to the transmission. Who is correct?

​Technician A says the use of throttle actuator control means the throttle is controlled by the ECM/TCM. Technician B says the ECM/TCM can increase the throttle opening with throttle actuator control to make the shift feel softer. Who is correct?

​Technician A says low engine vacuum will cause the MAP sensor to sense a load condition when it actually is not present, causing delayed and harsh shifts. Technician B says poor engine performance can cause delayed shifts through the action of the TP sensor indicating full throttle. Who is correct?

The use of the wrong ATF in a transmission may cause poor shift ____________________ or torque converter ____________________ and may damage the transmission.

Which of the following is not true of a modulated torque convertor clutch?

Define the five components of a simple hydraulic system.

Technician A says identification numbers identify only the manufacturer and assembly date of the transmission or transaxle. Technician B says the shape of the oil pan is the only positive way to identify the exact design of the transmission or transaxle. Who is correct?

A(n)____________________ uses two gears to generate oil pressure.

​Technician A says electronic control of the line pressure (pump output) controlled by the EPC solenoid allows the transmission control module (TCM) to vary the pressure used to apply the clutches. Technician B says that the electronic pressure-regulator valve can adjust pressure for one gear shift. Who is correct?

____________________ detects the percentage of throttle plate opening.

​While discussing a pressure test: Technician A says to begin this test by checking line pressure. Technician B says the test can be run with a scan tool and a pressure gauge on transmissions that use an EPC solenoid.  Who is correct?

____________________ is the transition between shift points.

All automatic transmissions use some sort of planetary gear set.

____________________ direct pressurized fluid to apply devices.

Explain the function of the torque converter and the force that operates it.