TestQ&A Flashcards

Transmissions

1
Q

which of the following was not modified with Eaton automated the mechanical transmission.

A

Auxiliary case

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2
Q

on Generation 3 models the number of ecu’s were reduced to one by combining the shaft controller and the transmission controller

A

True

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3
Q

on Generation 3 models the new push button is no longer a functioning ECU and is just an input device to the transmission ECU

A

True

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4
Q

the DM clutch is considered a 3 pedal system and requires the driver to manually apply and release the clutch

A

True

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5
Q

all auto shift Transmissions require the use of a self-adjusting clutch (solo clutch) electronic engines with J - 1939 communication and an engine brake

A

True

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6
Q

all ultrashift transmissions are fully automatic and do not require j-1939 communication to the engine

A

False

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7
Q

which statement is not true about the Generation 3 push button controller

A

the shift button controller makes the shift decisions and is programmable

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8
Q

the push button controller for generation 2 and 3 is not interchangeable

A

True

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9
Q

the range and splitter solenoids are the same and can be interchanged

A

True

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10
Q

which of the following is an incorrect state of a range valve

A

all solenoids on

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11
Q

which is not true about the inertia brake

A

that it is actuated by controlled air False

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12
Q

the start enable relay is used to prevent the engine from cranking when

A

all of the above

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13
Q

The MEIIR relay is needed on the auto shift transmission in case the clutch fails and the XY shifter cannot pull the transmission into neutral

A

false

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14
Q

select the harness that Eaton supplies

A

Transmissions

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15
Q

what component on the XY are used to select the rail

A

rail position sensor, side and low

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16
Q

which device does the ECU use to detect the transmission is in synchronous?

A

speed sensor

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17
Q

the transmission ECU receives an input from the ignition circuit as a cue to power up

A

true

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18
Q

the gear display can be used as a diagnostic tool for determining if the transmission is in gear during power up

A

true

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19
Q

the transmission ECU cannot detect the failed component with the key on

A

false

20
Q

the engine should crank when a dash symbol (_)

A

false

21
Q

ultrashift models require a brake signal for initial shift engagement

A

true

22
Q

the engine does not have to be running for the transmission to engage in gear from neutral

A

false

23
Q

heavy duty auto shift Transmissions will engage in gear from neutral without stopping the input shaft

A

false

24
Q

the rail select motor is used to push the shift finger into gear

A

false

25
Q

input shaft speed is not used for targeting on up shift

A

false

26
Q

when making enough shift with the heavy load the engine will Target up shift at low engine RPMs

A

false

27
Q

the transmission ECU uses the J - 1589 datalink to synchronize the engine during a shift

A

false

28
Q

the decision to shift is made based on a combination of RPM and engine torque

A

true

29
Q

the transmission should be left in gear when turning off the ignition key

A

false

30
Q

the transmission ECU shuts down immediately when the key is turned off

A

false

31
Q

the transmission ECU will only power down if the truck is sitting still

A

true

32
Q

the purpose of performing a calibration at power down is to measure where between the XY shifter and the shift bar house

A

true

33
Q

active codes cannot be cleared

A

true

34
Q

how many key clicks to retrieve inactive code

A

4 key clicks

35
Q

how many key clicks to retrieve an active code

A

2 key clicks

36
Q

how many key clicks to clear codes

A

6 key clicks

37
Q

if the engine is able to start with the shift lever in any position not just neutral the most likely cause is the start engine relay circuit

A

true

38
Q

the start enable relay is used by the system to prevent engine start in any lever position except neutral

A

true

39
Q

if there is an intermediate coat present it should be isolated before and active cold

A

false

40
Q

when performing system driven Diagnostics fault codes may not be present

A

true

41
Q

which of the following problems would prevent the engine from cranking

A

transmission ECU unable to confirm gearbox in neutral

42
Q

when not using an oem shift lever to control the transmission a successful self check is indicated by

A

the service light turning on and then off

43
Q

inactive code always causes a service light or OEM Dash to flash

A

false

44
Q

inactive fault results from an intermittent failure or a failure which has not been detected since the last power up

A

true

45
Q

the power of sequence failing with a dash symbol (_) on the gear display indicate of failure of

A

transmission ECU unable to confirm gearbox neutral

46
Q

Generation 3 no longer has a programmable ECU

A

true