What is the primary purpose of the On-Board Diagnostics (OBD-II) system?
OBD-II provides access to the status of various vehicle subsystems and is used for diagnostics and repair.
Which tool is commonly used to read and clear diagnostic trouble codes (DTCs)?
Scan tools or OBD-II scanners are used by technicians to interface with a vehicle's computer system.
What is the significance of a P0xxx code in diagnostics?
These codes are generic and standardized, applicable to all makes and models.
What does a high voltage reading on a battery cell typically indicate?
Overcharging or imbalance in EV battery packs can pose safety risks and reduce efficiency.
How should a technician approach troubleshooting an intermittent fault?
Intermittent faults require strategic methods like test drives, data logging, and wiggle tests.
What role does the CAN bus system play in diagnostics?
It allows electronic control units (ECUs) to communicate without a host computer.
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What is the most effective way to verify a repair was successful?
After a repair, retesting under the same conditions ensures the issue has been resolved.
Why is it important to consult service manuals or OEM repair procedures?
Service manuals provide detailed repair steps and safety guidelines specific to the vehicle.
What is a symptom of a faulty inverter in an EV?
Inverters convert DC power to AC and issues may show up as poor acceleration or drivability problems.