atasa 5 electronic automatic transmissions · 2019-02-18 · 2. a computer determines _____ points...
TRANSCRIPT
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ATASA 5 th Study Guide Chapter 41 Pages 1216 1244 Electronic Automatic Transmissions 44 Points
ATASA 5 th Electronic Automatic Transmissions
Be Certain to Read the Summary
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1. Through the use of electronics, transmissions have better shift ____________ and ______________. This leads to improved ________ economy, lower ______________ and improved driver comfort.
Timing & Quality, Fuel, Emissions Timing & Quantity, Fuel, Performance Timing & Quality, Fuel, Maintenance
ATASA 5 th Electronic Automatic Transmissions
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2. A computer determines __________ points in electronic automatic transmissions since they do not have governors or throttle pressure devices.
ATASA 5 th Electronic Automatic Transmissions
Extra Shift Bullet
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3. Shift __________________ are used to control fluid switching and pressures applied to clutches & bands.
Relays Contacts Solenoids
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4. The computer in an Electronic Automatic Transmission (EAT) may be either the PCM or the ___________ _______ _________ (TCM) tied to the CAN bus.
Transmission Control Module Transfer Case Modulator Torque Converter Module
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5. The TCM is programmed to provide ________ changes at the optimum time based on sensor input.
RPM Gear Driver
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6. Shift _________________ logic chooses the appropriate gear based on sensor input data.
Schedule Control Output
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7. Typical bus inputs (sensors) used by the TCM are: ______, ______, ______, ______, ________, ______ & ______.
ATASA 5 th Electronic Automatic Transmissions
TPS
MAP
MAF
ECT
IAT
CKP
BARO
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8. TCM monitors what’s happening inside the transmission with _________ and ________ range sensors.
Speed & Gear Speed & Wear Wear & Tear
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9. Typical __________ used as inputs are the BPP, TC or OD switch, the AC request & 4WD switches.
Sensors Switches Relays
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10. The transmission __________ (TR) sensor is comparable to the Park/Neutral switch or the PRNDL.
Range Rumor Reliability
ATASA 5 th Electronic Automatic Transmissions
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11. A low TP angle (light throttle application) causes early _____________. A high TP angle (heavy throttle application) causes early _______________.
Upshifts, Downshifts Downshifts, Upshifts Limpin, Failsafe
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12. MAF can be used as an engine ________ calculator. MAP or BARO are used to adjust line pressures according to changes in altitude.
Load Speed/RPM Acceleration
ATASA 5 th Electronic Automatic Transmissions
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13. ECT, IAT and Transmission __________ Temperature (TFT) sensors are important, especially since high temperatures can severely damage automatic transmission fluid.
Filter Finesse Fluid
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14. Engine speed signal sensed by the ______, determine shift timing, WOT & TCC control & pressures.
KS CKP TCC
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15. Transmissions use both _________ shaft speed sensors (ISS) & _________ shaft speed sensors (OSS).
Input, Output Output, Input Counter, Idler
ATASA 5 th Electronic Automatic Transmissions
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16. Shift solenoids are used to regulate shift ___________ and shift _________.
ATASA 5 th Electronic Automatic Transmissions
Timing & Feel Points & RPM Quality & Quantity
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17. The ______________ control solenoid provides changes in line pressure in response to engine load.
Force Pressure Area
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18. The EPC or _______________ _____________ __________ solenoid is pulse width modulated.
Electronic Pressure Control Electronic Powertrain Control Electronic Powder Room Control
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19. The ______ solenoid controls application, modulation, & release of the torque converter clutch.
APP BPP TCC
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20. _______________ _____________ provides consistent quality shifting & increases EAT durability.
ATASA 5 th Electronic Automatic Transmissions
Adaptive Learning Adaptive Strategy Adaptive Logic
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21. During ____________ Mode (Fail Safe Mode), the transmission limits driving capabilities, decreasing power & efficiency in an effort to prevent transmission damage. The default is often to simply stay in 2 nd gear.
ATASA 5 th Electronic Automatic Transmissions
TennisShoe LimpIn ByPass
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22. Button or paddle, manually shifted automatics are marked as a __________ option.
ATASA 5 th Electronic Automatic Transmissions
Retiree Sport Youth
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23. A CVT is a ______________________ ______________ Transmission.
Constant Velocity Continuous Velocity Continuously Variable
ATASA 5 th Electronic Automatic Transmissions
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24. Hybrid vehicles rely on electric __________ to change drive gear ratios.
Belts & Pulleys Motors Batteries
ATASA 5 th Electronic Automatic Transmissions
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25. An eCVT is an ____________________ controlled CVT.
Electronically Eccentrically Eminence
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26. When diagnosing an EAT, a _______ test followed by verifying good _________ voltage and performing voltage drop tests are good solid troubleshooting procedures.
Road, Battery Road, Charging Road, Starting
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27. ____________ or _____________ are evidence of poor engagement quality, often caused by pressure problems.
Shudder or Vibration Clutter or Vibration Shutter or Screen
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28. Inputs are tested in the same way as many electronic __________ management sensors are tested. (they may even be the same sensorsCAN)
Engine Body Accessory
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29. A good solenoid tends to ________ when activated.
Thud Snap Rattle
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