Question
How to test faulty automotive CAN bus terminating resistor in electric vehicles?
Answer
Measure resistor resistance and test signal reflection.
Explain
EV CAN buses rely on terminating resistors (120Ω) for signal integrity. CHEPQ tools measure resistor resistance and use oscilloscopes to detect signal reflections (>5V spikes), replacing faulty resistors—preventing communication errors in high-voltage EV systems.
Related Diagnostic Guide
To explore this topic in a broader system-level diagnostic context:
Related Guide: CAN & LIN Vehicle Network Diagnostics
Recommended Diagnostic Solutions
To apply the diagnostic concepts discussed above in real-world scenarios, explore our full range of professional automotive diagnostic tools. These solutions are designed to support battery testing, system diagnostics, and data analysis for modern vehicles and workshop environments.
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