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

20
Q

the engine should crank when a dash symbol (_)

21
Q

ultrashift models require a brake signal for initial shift engagement

22
Q

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

23
Q

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

24
Q

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

25
input shaft speed is not used for targeting on up shift
false
26
when making enough shift with the heavy load the engine will Target up shift at low engine RPMs
false
27
the transmission ECU uses the J - 1589 datalink to synchronize the engine during a shift
false
28
the decision to shift is made based on a combination of RPM and engine torque
true
29
the transmission should be left in gear when turning off the ignition key
false
30
the transmission ECU shuts down immediately when the key is turned off
false
31
the transmission ECU will only power down if the truck is sitting still
true
32
the purpose of performing a calibration at power down is to measure where between the XY shifter and the shift bar house
true
33
active codes cannot be cleared
true
34
how many key clicks to retrieve inactive code
4 key clicks
35
how many key clicks to retrieve an active code
2 key clicks
36
how many key clicks to clear codes
6 key clicks
37
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
true
38
the start enable relay is used by the system to prevent engine start in any lever position except neutral
true
39
if there is an intermediate coat present it should be isolated before and active cold
false
40
when performing system driven Diagnostics fault codes may not be present
true
41
which of the following problems would prevent the engine from cranking
transmission ECU unable to confirm gearbox in neutral
42
when not using an oem shift lever to control the transmission a successful self check is indicated by
the service light turning on and then off
43
inactive code always causes a service light or OEM Dash to flash
false
44
inactive fault results from an intermittent failure or a failure which has not been detected since the last power up
true
45
the power of sequence failing with a dash symbol (*_*) on the gear display indicate of failure of
transmission ECU unable to confirm gearbox neutral
46
Generation 3 no longer has a programmable ECU
true