Vehicle Intake, Safety Assessment, and Project Planning
Objective. Given an assigned shop vehicle, the student opens a repair order, performs a thorough multi-system visual and operational inspection, identifies all known and hidden concerns, and produces a written diagnostic plan with safety controls documented before any hands-on repair begins.
This lesson, its worked examples and its practice questions has not yet been verified by a certified examiner or master technician in the trade or by a certification or approval body. It is a study draft and may contain errors. Do not use it as instructions for work on a job site or on live equipment. Always follow your instructor, your supervising professional, and current official references and regulations.
VoTechWorks program approval and accreditation are still in progress. Credentials are issued only by the certifying bodies named in each program, after their own exams.
Vehicle Intake, Safety Assessment, and Project Planning
The first minutes with any vehicle set the tone for every repair that follows. A thorough intake process protects the customer, protects you, and protects the shop. In your capstone project you are responsible for the entire diagnostic and repair cycle, so you must get the intake right before you touch a single fastener.
Opening the Repair Order
A repair order (RO) is the legal and financial record of every service transaction. Open the RO in Mitchell1 or on the paper form before the vehicle moves into the bay. Record the year, make, model, engine, VIN, odometer reading, and the customer's stated concern using the customer's own words — not your interpretation yet. "Engine light on and car shakes at highway speed" is correct. "Misfires on cylinders 2 and 4" belongs in the technician notes, not the customer complaint line, until you verify it. Accurate documentation protects you if there is ever a dispute about what was requested.
The 50-Point Walk-Around Inspection
Work the inspection form systematically: exterior, under-hood, under-vehicle, interior, and a short operational check. Moving in a fixed pattern — say, clockwise around the outside, then pop the hood, then put the vehicle on the lift — ensures nothing is skipped.
Exterior: Note every dent, scratch, and cracked lens. Mark them on the vehicle diagram on the RO. This protects you from being blamed for pre-existing damage.
Under-hood: Check fluid levels (engine oil, coolant, brake fluid, power steering fluid if applicable, windshield washer fluid), belt condition, hose condition, battery terminals, and obvious wiring damage. Look for fluid leaks on the engine and on the ground beneath where the vehicle was parked.
Under-vehicle: Inspect the exhaust system, brake lines, fuel lines, suspension and steering components, CV axle boots, and wheel bearings. A creeper and a good work light are essential. Fluid stains on the undercarriage tell a story — trace them to the source.
Interior: Note dash warning lights, seat and glass condition, and test all primary controls.
Operational check: Start the engine, note any start-up noises, verify HVAC blower, test horn, lights, and wipers. A short slow drive in the lot (with instructor permission) may reveal brake, steering, or drivetrain concerns that are invisible when stationary.
Record every finding with correct industry terminology on both the paper form and the digital RO. Spell out component names fully; abbreviations that the next technician cannot decode are useless.
Classifying Concerns and Writing the Diagnostic Plan
Once the inspection is complete, sort every concern into a system category — engine, brakes, steering/suspension, electrical, HVAC, or drivetrain — and a priority level:
- Safety-critical: The vehicle should not be driven until this is repaired (e.g., brake fluid leak, cracked ball-joint boot with detectable play, inoperative brake lights).
- Customer complaint: The specific reason the vehicle was brought in.
- Advisory: A condition the customer should know about but that does not make the vehicle immediately unsafe (e.g., slightly low tire tread, dirty cabin air filter).
After classifying, write a ranked diagnostic plan. For each concern, state the first test you will perform and the tool required. Start with safety-critical items. Within a priority level, work from confirmed hard faults toward intermittent or suspected faults. A scan tool pull is often the logical first step for any concern that might set a DTC; a DVOM or scope test follows once you know what the scan data shows.
Pre-Work Safety Review
Identify the vehicle's powertrain. If the vehicle is a hybrid electric vehicle (HEV) or battery electric vehicle (EV), the high-voltage system requires additional controls before any underhood or underbody work begins. Check the service information label and the VIN to confirm. Never assume a vehicle is conventional gasoline-only.
High-voltage PPE: When working near HEV/EV high-voltage components, you must wear rubber insulating gloves rated at a minimum of Class 0 (tested to 1,000 V AC) and a face shield. Inspect the gloves for cuts, punctures, or ozone cracks before every use. Damaged gloves must be removed from service immediately.
De-energization procedure: Follow the OEM service information exactly. On most hybrid and EV platforms this involves turning the ignition off, removing the service plug or disconnecting the 12-volt auxiliary battery, and waiting the manufacturer's specified time before touching any orange high-voltage cables or components. Document the steps you followed on the safety checklist.
Lockout/tagout (LOTO): For any repair where an unexpected vehicle movement or system energization could injure you, establish LOTO controls. Place wheel chocks, set the parking brake, and if the vehicle must be raised, use jack stands rated for the vehicle's weight at the manufacturer's lift points. Attach a LOTO tag to the ignition key or push-button stating your name and the date. The OSHA lockout/tagout standard applies to service and maintenance operations — know where your shop's LOTO station is and how to use it.
Emergency equipment: Before signing the safety checklist, physically locate the nearest fire extinguisher, eyewash station, and the shop's emergency stop switch. Confirm these locations with your instructor. This is not a formality — in a real emergency you will not have time to search.
Instructor sign-off: Your instructor must review and sign the completed RO, diagnostic plan, and safety checklist before any hands-on repair work begins. This is a hard stop in the capstone workflow. No exceptions.
Why This Process Matters for Your Career
ASE certification tests your ability to diagnose and repair correctly, but professional shops measure a technician by how well they communicate findings, document their work, and avoid comebacks. A complete intake process is the foundation of all eight A-series test areas and directly supports EV L3 work on high-voltage systems. Habits built in this lab carry into every job you will ever hold.
Key terms10
Materials: Shop vehicle (gasoline, hybrid, or EV as assigned), shop inspection form, blank NAPA or Mitchell1 repair order, laptop with Mitchell1 or AllData subscription, DVOM, OBD-II scan tool (Autel or equivalent), rubber insulating gloves (Class 0 minimum for HEV/EV), face shield, shop manual or OEM service information, OSHA lockout/tagout station, ASE A1–A8 task lists for reference
Check: Instructor reviews the completed repair order and diagnostic plan before the student may proceed; all safety controls must be documented and verified in person. Pass standard: 100% of safety controls correctly identified and signed off; diagnostic plan covers every identified concern with a logical first test; repair order terminology matches industry standard with no more than two instructor-corrected errors.
Practice check8
Answer each question, then check it. Nothing is recorded; this is your own practice.
