ASE A2 study materials
ASE A2 study resources

ASE A2 study plan

ASE A2 · Give each week a clear focus.

8 weeks · About 6 hours per week

Week 1

General Transmission and Transaxle Diagnosis

  • Map the power-flow path through a planetary gearset and through a belt-type CVT in writing, from engine input to final drive, labeling each component's role.

  • Build and document a structured pre-scan road-test routine covering cold fluid check, hot fluid check, engagement timing, shift feel, and noise/vibration observation.

  • Identify the function of 20 sensors, actuators, solenoids, and switches from written descriptions alone, without reference to a diagram.

  • Retrieve DTCs, freeze-frame data, and five live data PIDs on a scan tool, and explain in writing what each value indicates about transmission operation.

Your checkpoint

A 10-page personal diagnostic checklist plus a scored 30-question Domain A practice set at 75% or better.

Week 2

General Transmission and Transaxle Diagnosis

  • Calculate expected line pressure, throttle pressure, and governor/input-speed pressure values and state how each reading shifts with load and speed.

  • Explain in writing the stall test and torque converter clutch apply/release test, including setup, safety limits, and pass/fail criteria.

  • Classify 15 written symptom scenarios (slipping, delayed reverse, harsh 1-2 shift, no engagement, shudder) into mechanical, hydraulic, and electrical root-cause categories.

  • Write circuit-level test procedures for one solenoid and one speed sensor, covering resistance, voltage drop, ground integrity, and signal waveform checks.

Your checkpoint

A written diagnostic decision tree for five common complaints plus a 40-question Domain A practice set at 80% or better.

Week 3

Off-Vehicle Transmission and Transaxle Repair

  • Sequence the disassembly of a typical automatic transaxle into at least 15 ordered steps, naming the tool and fastener type used at each step.

  • Name and functionally describe 25 internal components, including clutch packs, bands, one-way clutches, planetary sets, bushings, thrust washers, pump, and valve body.

  • Select and demonstrate the correct use of a dial indicator, micrometer, bore gauge, feeler gauge, and straightedge for transmission measurement tasks.

  • Document a cleaning and inspection protocol for hard parts that states what makes each part rejectable versus reusable.

Your checkpoint

A 40-part identification drill answered at 90% or better, plus a written 15-step disassembly sequence with tool callouts.

Week 4

Off-Vehicle Transmission and Transaxle Repair

  • Compute clutch pack clearance from a measured stack height and specify the selective snap ring or pressure plate needed to bring it into specification.

  • Measure and evaluate end play, bearing preload, and bushing wear against typical service limits, recording each value with its accept/reject call.

  • Trace hydraulic flow through a valve body and explain the valve and solenoid roles in three separate shift or apply circuits.

  • Assemble a unit and verify every apply circuit with air-pressure checks, listing the expected result for each circuit before testing.

Your checkpoint

A completed rebuild worksheet recording measurements for five clutch packs, three end plays, and air-check results for every apply circuit, with all out-of-spec values corrected or noted.

Week 5

In-Vehicle Transmission and Transaxle Repair

  • Plan a transmission or transaxle removal and installation, specifying support points, lifting method, torque values, and fastener sequencing.

  • Outline the removal of halfshafts, mounts, cooler lines, and shift linkage while protecting seals, connectors, and wiring from damage.

  • Describe cooler circuit flushing and contamination control steps to perform after a failure that produced debris.

  • List pre-installation checks, including converter seating depth, dowel alignment, flexplate condition, and block plate positioning, that prevent a repeat failure.

Your checkpoint

A written removal-and-installation procedure with a torque table for one front-wheel-drive transaxle plus a 20-item pre-installation checklist.

Week 6

In-Vehicle Transmission and Transaxle Repair

  • Replace in-vehicle components in the correct order with proper torque values: valve body, solenoid pack, internal harness, control module, and speed sensors.

  • Perform adaptive relearn and quick-learn procedures for three distinct manufacturer strategies described generically, documenting the prerequisite conditions for each.

  • Diagnose and rank fluid leaks at the pan, seals, cooler lines, and vent by likelihood and by test method used to confirm each.

  • Verify each repair with a post-repair road test and data review, recording before-and-after values for the affected PIDs.

Your checkpoint

Two case-study writeups (symptom to test to repair to verification), each at least one page, plus a 40-question Domain C practice set at 80% or better.

Week 7

Transmission and Transaxle Maintenance and Adjustment

  • Match the correct fluid family (for example Dexron, Mercon, ATF+4, CVT fluid, dual-clutch fluid) to ten applications using specification identifiers rather than brand names.

  • Perform fluid level checks on both dipstick-equipped and overflow-plug/thermostatic-controlled units, stating the required fluid temperature range for each.

  • Adjust shift linkage, manual lever/transmission range sensor, and throttle valve cable to specification, confirming each with scan tool range and throttle PIDs.

  • Carry out a filter and pan service and a band or clutch apply adjustment per procedure, documenting the torque sequence used.

Your checkpoint

A set of five maintenance procedure cards (fluid level, fluid exchange, filter service, linkage adjustment, band/TV cable adjustment) plus a 30-question Domain B practice set at 85% or better.

Week 8

General Transmission and Transaxle Diagnosis & Transmission and Transaxle Maintenance and Adjustment & In-Vehicle Transmission and Transaxle Repair & Off-Vehicle Transmission and Transaxle Repair

  • Re-answer every item missed in weeks 1 through 7 and write a one-sentence explanation of the correct reasoning for each.

  • Complete two full-length timed practice exams of at least 50 questions each and review every incorrect response before scoring the next attempt.

  • Summarize the ten highest-frequency test themes across all four domains onto a single reference page.

  • Rehearse a five-minute spoken walkthrough of a complete diagnostic path from customer complaint through verified repair, covering all four domains.

Your checkpoint

Two timed full-length practice exams scored at 85% or better, with every missed item documented and re-explained in writing.

Milestones

Week 2: Score 80% or better on a 40-question Domain A practice set and correctly classify at least 12 of 15 symptom scenarios by root-cause category.

Week 4: Submit a complete teardown measurement worksheet with every clutch clearance and end play either within specification or corrected, and score 85% or better on a 30-question Domain D set.

Week 6: Finish both case-study writeups with before-and-after data recorded, and score 80% or better on a 40-question Domain C set.

Week 8: Achieve 85% or better on both timed full-length practice exams, with a written explanation on file for every missed item.