ASE Automatic Transmission and Transaxle Flashcards
6 cards from real ASE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 ASE Automatic Transmission and Transaxle flashcards as text
A vehicle with an automatic transmission slips when shifting from 1st to 2nd gear but operates normally in all other gears. What is the MOST likely cause?
Answer: Worn or burned 1-2 clutch pack
A slip specific to the 1-2 shift typically indicates a worn or burned 1-2 clutch pack that cannot hold properly under load.
When pressure testing an automatic transmission, the technician finds that line pressure is low in all ranges. What is the MOST likely cause?
Answer: Both A and B
Low line pressure in all ranges points to either a worn oil pump that cannot build adequate pressure or a stuck pressure regulator valve that bleeds off too much pressure.
A customer complains of harsh engagements when shifting from Park to Drive. Which component is MOST likely at fault?
Answer: Accumulator piston or spring
An accumulator piston or spring that is worn or broken cannot cushion apply pressure, resulting in harsh band and clutch engagements.
Technician A says a torque converter clutch (TCC) that never releases can cause the engine to stall at stops. Technician B says a TCC that never applies will reduce fuel economy. Who is correct?
Answer: Both Technician A and B
A TCC stuck engaged stalls the engine at stops because the engine is locked to the drivetrain, and a TCC that never applies keeps the converter in slip mode reducing fuel efficiency.
What fluid condition would MOST likely indicate that the transmission has overheated?
Answer: Dark brown or black fluid with a burnt odor
Dark brown or black fluid with a burnt odor is caused by oxidation and varnish buildup from excessive heat, indicating the transmission has overheated.
A vehicle's automatic transmission will not downshift when the accelerator pedal is fully depressed (kickdown). Which component is MOST likely faulty?
Answer: Throttle valve (TV) cable or throttle position sensor
The throttle valve cable or throttle position sensor signals transmission load demand; if faulty, the transmission cannot detect full-throttle kickdown and will not force a downshift.