← Back to TEC AcademyLevelIntermediate Duration3 days FormatIn person AreaEV technology
IntermediateIn person
EV technology · EV 3Diagnostics of EV propulsion and energy systems
Advanced level — 3 days / 24 hours. Full scan, CAN/LIN/Ethernet, DTC, live data, actuation tests, DC/DC, OBC, inverter, motor, charging and signal analysis.
Training objective
Develop a systematic diagnostic approach for electric and hybrid vehicles without unnecessary component replacement.
Who it is for
- Technicians who completed EV 1 and EV 2
- EV/HV system diagnosticians
- Service technicians solving complex EV faults
- SmartSafe partner trainers
Prerequisites
Completed EV 1 and EV 2.
Course facts
Theory30%
Practice70%
Learning objectives and outcomes
- Perform a full scan and build network topology
- Analyze DTC, freeze-frame and live data
- Test DC/DC, OBC, inverter, motor and charging
- Use oscilloscope, multimeter and current clamps
- Confirm the root cause by measurement, not only by reading DTCs
Program by day
Day 1 — Advanced vehicle diagnostics
Full scan, network topology and DTC analysis.
Theory90 min
Instructor demonstration105 min
Hands-on work150 min
Case analysis and review60 min
Theory — Advanced diagnostics
- Full-system scan and network topology
- CAN, LIN and Ethernet communication
- DTC analysis: active, stored and consequential faults
- Freeze-frame and live-data analysis
- Actuation tests, adaptations and root-cause correlation
Practical work
- Full-system scan with P03
- Create system topology
- Compare good and faulty vehicle parameters
- Build a diagnostic plan
Day 2 — Diagnostics of major EV components
DC/DC, OBC, inverter, motor, PDU and charging.
Theory90 min
Instructor demonstration105 min
Hands-on work150 min
Case analysis and review60 min
Theory — Major EV components
- DC/DC converter, OBC, inverter and electric motor
- Position sensors, HV heater and electric A/C compressor
- PDU, HV contactors and battery thermal management
- Relationship between 12 V and HV systems
- AC and DC charging problems
Practical work
- Read and analyze parameters
- Perform actuation tests
- Measure voltage and current
- Verify input and output signals
Day 3 — Oscilloscope, multimeter and current clamps
Oscilloscope setup and signal analysis.
Theory90 min
Instructor demonstration105 min
Hands-on work150 min
Case analysis and review60 min
Theory — Instruments and signals
- Oscilloscope setup: time base, voltage range and trigger
- PWM and CAN signal analysis
- Current profiles of electrical consumers
- Voltage drop and contact resistance
- Correlation of scan data with physical measurements
Practical work
- Use P03 integrated instruments
- Measure sensor and actuator signals
- Verify CAN communication
- Diagnose a simulated fault
Practical exercises
- Full scan and topology with P03
- Compare good and faulty vehicle parameters
- Actuation tests and voltage/current measurement
- Measure sensor and actuator signals with oscilloscope
- Verify CAN communication and diagnose a simulated fault
Training equipment
- P03 — full scan, DTC analysis, live data, actuation tests and topology
- Oscilloscope — PWM and CAN signal analysis and trigger setup
- Multimeter and current clamps — confirm the physical root cause by measurement
Assessment and certification
Theory
- Theory test — 20% of the total score
- Covers EV architecture, HV safety, measurements, diagnostics and the course equipment
Practical exercises
- Practical exercises — 50% of the total score
- Final practical task — 30% of the total score
Completion criteria
- At least 75% of the total score
- All safety-critical procedures must be performed correctly
- A critical safety error automatically terminates the practical exam
- Maximum eight participants; hands-on work in pairs
- At least one equipment set for every two participants
- At least two vehicles, or one EV and one PHEV of different architecture
Final training outcome
TextThe participant can diagnose faults in the main EV systems and confirm the root cause by measurement, not only by reading DTCs.
Key points
- Advanced level — third of six courses
- Next step: EV 4 — HV battery diagnostics and condition assessment
Key messageThe root cause is confirmed by measurement, not only by reading DTCs.
Register your team
Ready to prepare your team for this training?
Send an enquiry and we will arrange training tailored to your team, equipment and schedule — live at the SmartSafe Europe TEC Centre in Croatia.
