CAN Bus Troubleshooting Guide

CAN bus troubleshooting guide — multimeter test reference

Our CAN bus troubleshooting guide has helped thousands of engineers and technicians diagnose and resolve CAN bus faults — whether automotive or industrial.

Covers termination resistance, CAN HIGH & LOW voltage levels, and node transceiver checks. Now available as an interactive diagnostic tool that walks you through fault isolation step by step.

What’s in the CAN Bus Troubleshooting Guide

  • Guided multimeter placement for bus diagnostics
  • CAN bus termination resistance check & troubleshooting steps
  • CAN bus voltage check & troubleshooting steps
  • ECU transceiver test with expected impedance values
  • CAN Node isolation technique for faulty transceiver identification
  • Interactive diagnostic flowchart — answers narrow the diagnosis in real time
  • Printable PDF reference included