Bus air conditioner not turning on is a typical highly integrated fault. Its symptom is singular (no response), but it may involve multiple layers of causes, ranging from power supply safety to vehicle network communication. The case study “Root Cause Tracing of Bus HVAC System Wake-up Failure,” included in the 2025 *Commercial Vehicle Electrical and […]
Bus AC electrical issues have transcended the simple categories of “open circuits” and “short circuits,” evolving into a complex systemic problem integrating power electronics, sensing technology, network communication, and software logic. The 2025 special issue of the “Commercial Vehicle Electrical System In-Depth Diagnosis White Paper,” titled “Analysis of the Electrical Fault Spectrum in Bus Thermal […]
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