How should the technician verify the color coding of high-voltage components?

• A. Through the Original Vehicle Manufacturer (OEM)
• B. Using a random color chart
• C. Color coding can be assumed
• D. By consulting the vehicle owner

Answer: (A)

Manufacturer-defined color coding for high-voltage systems is model-specific and must be verified against official documentation. Each automaker may use different colors or labeling for HV cables and components, and those standards are laid out in the vehicle’s service information, wiring diagrams, and color-code tables. By checking with the Original Vehicle Manufacturer, you ensure you follow the exact, approved color scheme for that model and year, which is essential for safe service. Relying on a random color chart, assuming color coding, or asking the vehicle owner for the spec can lead to misidentification and potential safety hazards, since those sources aren’t authoritative or current.