Red Seal 310S Automotive Service Technician Exam: 2026 Weighting Guide
The Red Seal 310S Automotive Service Technician Interprovincial Examination (IPSE) covers 125 questions across eight Major Work Activities — the widest spread of any Red Seal trade, reflecting how broad a modern technician's job really is.
Exam Quick Blueprint Summary
- Total Exam Questions: 125 Multiple-Choice Questions
- Time Allowed: 4 Hours
- Passing Mark: 70%
- Source: Red Seal Occupational Standard (RSOS), red-seal.ca
1. Official Major Work Activity (MWA) Weighting Breakdown
| Major Work Activity (MWA) | Weighting (%) | Questions |
|---|---|---|
| MWA A: Performs Common Occupational Skills Safety, tool use, shop equipment, customer communication |
7% | 9 Qs |
| MWA B: Diagnoses and Repairs Engine and Engine Support Systems Engine mechanical, fuel, ignition, emissions, diesel systems |
17% | 21 Qs |
| MWA C: Diagnoses and Repairs Vehicle Module Communications Systems CAN bus, network diagnostics, scan tool data |
10% | 12 Qs |
| MWA D: Diagnoses and Repairs Driveline Systems Transmissions, transaxles, driveshafts, differentials |
14% | 18 Qs |
| MWA E: Diagnoses and Repairs Electrical and Comfort Control Systems Charging/starting, lighting, HVAC, infotainment |
18% | 23 Qs |
| MWA F: Diagnoses and Repairs Steering, Suspension, Braking & Control Systems (Highest Weighting!) Steering, suspension, ABS/ESC, tires, hubs, wheel bearings, ADAS |
19% | 24 Qs |
| MWA G: Diagnoses and Repairs Restraint Systems, Body Components, Accessories and Trim Airbags, seatbelts, body panels, trim |
8% | 10 Qs |
| MWA H: Diagnoses and Repairs Hybrid and Electric Vehicle (EV) Systems High-voltage safety, battery systems, EV drivetrain |
7% | 9 Qs |
2. Where to Focus Your Study Time
MWA F (Steering, Suspension, Braking & Control Systems, 19%) and MWA E (Electrical & Comfort Control, 18%) together make up over a third of the exam. With eight activities in play, don't neglect Engine Systems (17%) or Driveline (14%) either — this is a broad-coverage exam, not a top-heavy one.
- Steering & braking (19%): ABS/ESC diagnostic strategy, tire/wheel bearing service specs, and increasingly ADAS calibration basics.
- Electrical systems (18%): charging/starting system diagnosis, wiring diagram interpretation, HVAC refrigerant systems.
- Hybrid/EV systems (7%): smallest weighting but growing fast — high-voltage safety lockout procedures are a common question source.
Practice Question: Before servicing a high-voltage hybrid battery system, what is the first safety step a technician must take?
A) Disconnect the 12V battery
B) Put on insulated gloves and verify voltage is zero
C) Remove the high-voltage service plug/disconnect
D) Wait 10 minutes
Correct Answer: C) Remove the high-voltage service plug/disconnect (This isolates the high-voltage battery pack before any further steps, per manufacturer lockout/tagout procedure)
How to Study for Automotive Service Technician Red Seal Success
Rather than cramming randomly, practice a focused set of questions daily weighted to match the official blueprint above using Red Seal Pass Automotive Service Technician Prep. Our spaced repetition algorithm automatically re-tests questions you get wrong until they become second nature.
You can also check our Founder's Exam Prep Journey Blog to follow a real-time study routine in action.
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