ASE XEV2 study plan

Classify high-voltage versus low-voltage circuits on an electrified vehicle and state the shock and arc-flash hazards each presents.

Select the correct personal protective equipment ensemble for a described task, including insulating gloves with leather protectors, arc-rated outerwear, face and eye protection, and insulated tools, and justify each item in writing.

Describe the sequence for establishing an electrically safe work condition from memory: identify, disconnect, lock and tag, verify, and guard.

Explain approach-limit logic and how to set a safe work boundary around an energized high-voltage component.

Identify the high-voltage disable methods used on at least three vehicle architectures, including manual service disconnect, battery contactor control, and high-voltage fuse removal.

Perform the meter-verification routine in the correct order: prove the meter on a known live source, test the circuit, then re-prove on the known source.

Describe how to verify zero voltage at multiple test points and how to account for stored energy in capacitors and waiting or bleed-down times.

Write out a re-energization and reassembly sequence that includes torque, connector seating, and post-repair verification checks.

Explain lockout and tagout practice and describe how to guard an opened high-voltage enclosure.

Diagram high-voltage battery pack architecture from cell through module, pack, contactors, service disconnect, and battery management system.

Explain state of charge, state of health, and cell balancing, and describe how each is reported through scan-tool data.

Describe how to measure insulation resistance with a megohmmeter and compare results to the OEM-specified minimum rather than a memorized number.

Interpret pack-level and module-level fault codes and rank the likely root causes for a given set of readings.

Explain thermal management of the pack and how temperature affects charge acceptance and available power.

Explain inverter operation, including how direct current is switched into three-phase alternating current and how switching devices are controlled.

Describe the purpose and operation of the DC-to-DC converter and how it maintains the low-voltage system.

Explain precharge and bus discharge, including what a failed precharge or incomplete discharge looks like in scan data and voltage measurements.

Identify inverter and converter fault codes and connect each to a component-level test.

Consolidate safety, battery, and disablement material into a single reference sheet for later review.

Capture and label waveforms for at least four signals, including an inverter current sensor, a motor position sensor, a communication bus, and a control power supply.

Interpret resolver and motor position sensor signals and describe how a fault changes the waveform or scan-tool values.

Explain how the inverter derates power in response to temperature and describe how to confirm derating from live data.

Trace a no-start or reduced-power complaint from a power-electronics fault code to a test point and a measurement.

Compare permanent-magnet and induction traction motors in construction, control, and failure modes.

Explain at least four hybrid drive architectures, including series, parallel, power-split, and series-parallel, and describe power flow in each.

Describe regenerative braking, the conditions that limit it, and how it interacts with friction braking.

Explain clutch, damper, and transaxle components in a hybrid drive unit and the symptoms each produces when it fails.

Diagnose a driveability complaint involving an electric drive unit using scan data and mechanical checks.

Differentiate AC Level 1, AC Level 2, and DC fast charging in voltage, current, connector type, and onboard versus offboard conversion.

Explain the pilot signal and how the vehicle and electric vehicle supply equipment negotiate available current.

Describe the role of the onboard charger, charge-port temperature sensing, and battery preconditioning in charge performance and protection.

Diagnose a no-charge or slow-charge condition by separating supply-equipment faults from vehicle-side faults.

Explain energy management features such as state-of-charge limiting, departure timers, and cabin preconditioning.

Complete a timed practice exam covering all six domains and score every missed item back to its source concept.

Re-verify from memory the full disablement, verification, and re-energization sequence.

Review the personal reference sheets from weeks one through seven and fill any gap found during the practice exam.

Rehearse the reasoning behind safety decisions aloud so procedure steps are explained, not just recited.