ASE A2 study guide
ASE A2 · Work through your exam, one topic at a time.
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. Content is organized into four areas: general transmission and transaxle diagnosis (symptoms, noise and vibration analysis, fluid condition, and electronic control diagnosis); maintenance and adjustment (fluid level and condition, linkage and band adjustment, cooler and pan service); in-vehicle repair (valve body, solenoid, sensor, harness, TCM, and pump work with the unit still installed); and off-vehicle repair (bench teardown, clutch pack and planetary inspection, clearance measurement, and reassembly). The test is multiple choice and is offered at test centers or through ASE online remote testing. The ASE A2 study guide has 4 sections and about 957 words.
01General Transmission and Transaxle Diagnosis
A2 diagnosis questions reward a disciplined sequence. Verify the customer concern, check fluid level and condition using the OEM procedure, and confirm battery/ground integrity before trusting codes.
273 words, about 1 min02Transmission and Transaxle Maintenance and Adjustment
Maintenance questions test whether you follow the OEM procedure rather than a generic habit. Identify the correct fluid-ATF+4, Dexron VI, Mercon LV, CVT fluid, or DCT fluid are not interchangeable.
242 words, about 1 min03In-Vehicle Transmission and Transaxle Repair
In-vehicle repair covers valve body, solenoids, sensors, internal harness, mounts, cooler lines, axles, and final drive components. Support the engine/transaxle, disconnect the battery, and clean the area before opening.
225 words, about 1 min04Off-Vehicle Transmission and Transaxle Repair
Off-vehicle repair requires disassembly discipline: tag parts, keep clean, and inspect clutch plates, steels, seals, bushings, bearings, pump, valve body, and torque converter. Measure clutch pack clearance, end play, and bushing fit.
217 words, about 1 min