ASE A2 case studies
ASE A2 · Put your knowledge to work in context.
ASE A2, Automatic Transmission/Transaxle, is one of the automobile and light truck certification tests in the ASE Certification Test Series administered by the National Institute for Automotive Service Excellence. It is written for working technicians - dealership driveline specialists, independent shop technicians, and transmission remanufacturing personnel - who diagnose, service, and overhaul automatic transmissions and transaxles rather than only removing and replacing them. The ASE A2 case studies are 5 cases and about 3,199 words.
1TCC Shudder at Cruise on a Tow-Rated Pickup
2012 rear-wheel-drive pickup with a 6-speed automatic, 112,000 miles, used to tow a 6,000 lb travel trailer. The customer reports a vibration felt through the seat and floor at 45-55 mph under light throttle, about 100 rpm of engine speed fluctuation on the tach, which disappears when the throttle is released or tow/haul mode is selected.
691 words, about 3 min2Fluid Level Set Wrong on a Dipstickless Transaxle
2015 front-wheel-drive sedan with a 6-speed automatic transaxle, 84,000 miles, no dipstick. Fluid level is set by removing a check plug on the case side with the engine running and transmission fluid at 40-50 degrees C.
619 words, about 3 min3Repeat Axle Seal Leak on a Transaxle
2012 front-wheel-drive crossover, 6-speed automatic transaxle, 118,000 miles. The left front axle seal has been replaced twice in 8,000 miles and is leaking again, with fluid thrown onto the case.
629 words, about 3 min4Bench Build Measurements and Selective Fits
You are assembling a 4-speed automatic for a 2006 rear-wheel-drive truck. Dry-fit measurements: input shaft endplay is 0.014 in with a 0.072 in selective thrust shim installed (spec 0.005-0.010 in).
538 words, about 3 min5Low Line Pressure With High Stall Speed in All Ranges
2009 rear-wheel-drive 5-speed automatic, 178,000 miles. Complaint: slips in all forward gears when hot; reverse works but feels weak.
722 words, about 4 min