Contactor
A high-voltage relay that controls current flow between the battery and inverter.
Contactors connect and disconnect high-voltage circuits under ECU control. They must handle large current loads safely and reliably. Faulty contactors cause power interruptions or isolation faults. Regular inspection ensures contact integrity and arc suppression. Using OEM-grade parts maintains electrical safety and performance.
Related Diagnostic Guide
This topic is part of CHEPQ’s system-level diagnostic framework.
For a broader understanding of how this component is analyzed in real-world diagnostics, refer to the following guide:
Applying This Knowledge in Practice
The diagnostic principles discussed above are commonly applied in real-world vehicle diagnostics. To put this knowledge into practice, explore professional automotive diagnostic tools designed to support system testing, fault analysis, and troubleshooting across modern vehicles.