Check the under-hood power distribution unit first if major systems like ignition or cooling fail, as high-current circuits are routed through this area near the battery.
The interior panel located under the dashboard manages lower-load circuits such as lighting, radio, and control modules, with ratings typically ranging from 7.5A to 30A depending on the system.
Use a multimeter or test light to verify voltage on both terminals of each protective element before removing it. A break in the metal strip or no continuity reading indicates failure.
Keep the layout chart from the cover visible while inspecting, as it maps each slot number to a specific circuit and prevents removing the wrong component.
1999 Acura Integra Fuse Box Diagram Guide
Match each slot number with the chart printed on the cover before removing any protective element, as circuits for ignition, lighting, and accessories share similar amperage values but serve different functions across both under-hood and cabin units.
Check continuity and voltage directly on installed elements using a multimeter; power present on only one terminal indicates a failed strip, while repeated failure of the same slot points to wiring faults or a malfunctioning component rather than the protective element itself.
Under Hood and Interior Fuse Box Locations and Access Steps
Open the hood and locate the main power distribution unit near the battery, then release the plastic cover by pressing the side clips and lifting it upward to expose high-current protective elements and relays.
Access the cabin panel under the dashboard on the driver side by removing the trim cover; follow these steps:
- Turn ignition off
- Pull the cover outward using the edge slot
- Expose the panel with numbered slots
After inspection, reinstall both covers securely by pressing them back until all clips lock into place, ensuring proper protection against dust and moisture.