Micro Trainer CAN Basic - International
Micro Trainer CAN Basic - International
Simulated CAN Bus Trainer for Multimeter Diagnostics
Important: This is not a live CAN bus. The Micro Trainer CAN Basic produces static DC voltage levels that simulate what a digital multimeter reads on an active CAN bus. You will not see toggling CAN frames on an oscilloscope - this board is purpose-built for teaching multimeter-based CAN bus diagnostics, the first step in any roadside or flightline troubleshooting workflow.
What It Does
The Micro Trainer CAN Basic gives students a safe, self-contained circuit board to practice the voltage and resistance measurements used to diagnose CAN bus faults - without needing a vehicle, aircraft, or expensive bench equipment. Students learn to identify normal bus voltages, correct termination resistance, and five common fault conditions using only a standard multimeter.
Key Features
- Realistic CAN bus voltages - CAN_H reads ~2.7V, CAN_L reads ~2.2V, differential ~0.5V (matches real-world multimeter-averaged values)
- 5 fault injection switches - CAN_H shorted to ground, CAN_L shorted to ground, CAN_H-CAN_L short, open bus segment, and incorrect termination (60 ohm vs 120 ohm)
- LED status indicators - Green/red module status LEDs for ECM, TCM, and BCM, plus COMM DEGRADED and NO COMM indicators show students the system-level impact of each fault
- 11 labeled test points - Large pads sized for multimeter probe tips, clearly marked with expected readings
- Compact and portable - Flat SMD construction, fits in a tool bag or classroom kit
Designed For
- Automotive and aviation maintenance training programs
- Trade schools and community college electronics courses
- Self-study for ASE, A&P, or military MOS certification prep
What Students Will Measure
| Measurement | Normal Reading |
|---|---|
| CAN_H to GND | ~2.7V |
| CAN_L to GND | ~2.2V |
| CAN_H - CAN_L (differential) | ~0.5V |
| Termination resistance (correct) | 60 ohm |
| Termination resistance (fault) | 120 ohm |
Interactive CAN Diagnostic Simulator
A free browser-based demo that mirrors this board. Pick any of the five faults and see exactly what a multimeter would show you, measurement by measurement.
- Watch the live waveform and the averaged meter readings side by side
- See where the leads go for every reading, and why the differential is measured across the pair instead of to ground
- Flip the key between on and off to see why voltage and resistance are never measured at the same time
- Compare each reading against its known-good value, with out-of-spec readings flagged
▶ Open the CAN Diagnostic Simulator in your browser
How to use offline: Use the download button on that page to save the demo as a single HTML file. Double-click it to open in any browser — no internet needed.
What's Included
- Micro Trainer CAN Basic PCB (fully assembled and tested)
One CR2032 coin cell is required and is not included. It drops into the holder on the board and is stocked by supermarkets, pharmacies and electronics shops worldwide. Switch the board off at MASTER when it is not in use.
For purchase orders, international shipping, or larger quantities, please contact scott@sbctrainingllc.com