ASE A2 study plan
ASE A2 · Give each week a clear focus.
8 weeks · About 6 hours per week
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.
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.
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.
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.
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.
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.
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.
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.