Check the interior power panel under the driver side dashboard first, as most electrical faults in this compact hatchback originate there. A second distribution unit is installed in the engine compartment near the battery, handling higher-load systems such as cooling and ignition.
Each slot protects a specific circuit, including lighting, infotainment, power windows, and charging ports. Using the wrong slot reference can lead to incorrect part replacement, so match the numbering with a model-specific layout chart. Panel design and slot order differ from earlier versions.
To verify a failed component, remove it and inspect the metal strip inside. A visible break or burn mark confirms damage. Always replace with the same amperage rating printed on the top to avoid overheating wires or damaging connected modules.
Keep a small puller tool in the glove compartment for easier removal in tight spaces. Routine inspection of these components helps maintain stable operation of onboard electronics and reduces time spent diagnosing faults.
2018 Honda Fit Fuse Box Diagram with Panel Locations and Circuit Assignments
Match each numbered slot with its circuit using the label on the panel cover before removing any component. The interior distribution unit controls cabin electronics, while the engine compartment unit manages high-load systems such as cooling fans and ignition circuits.
The cabin panel groups low and medium current systems in a compact layout:
- Audio system and display unit
- Power windows and central locking
- Interior lighting and dashboard cluster
- Accessory power outlets
Each slot includes a fixed amperage value, typically ranging from 7.5A to 30A. Lower ratings protect sensitive electronics, while higher ratings support motors and actuators. Always verify both slot number and rating before replacement.
The engine compartment distribution unit separates high-current circuits to prevent overload in the cabin area. It typically includes:
- Cooling fan motors
- Fuel delivery system relay
- Headlamp circuits
- Main control module power supply
Relays in this section must match exact specifications. Similar shapes do not guarantee compatibility, and incorrect installation can disable starting or lighting systems.
How to Read the Layout Correctly
Align the printed numbering with the physical orientation of the panel. Many errors occur when the panel is viewed upside down. Confirm row and column positions, then double-check the amperage marking on the component itself.
Typical Circuit Grouping Pattern
Lighting and accessory systems are clustered together in the interior unit, while engine-related circuits remain isolated under the hood. This separation simplifies troubleshooting by narrowing down the area based on the type of malfunction.
Where the fuse panels are located in a 2018 Honda Fit and how to access them
Open the driver-side lower dashboard cover to reach the interior power distribution panel, which is positioned just above the footwell near the steering column. Pull the small handle or edge of the plastic cover to release the clips, then remove it to expose the numbered slots arranged in rows.
The second panel is located under the hood near the battery on the driver side. Press the retaining tabs on the protective lid and lift it upward. This unit contains higher-load circuits and relays, so ensure the ignition is off before opening and avoid contact with metal tools around the battery terminals.
Use a flashlight to clearly read slot numbers and amperage markings. Keep the cover nearby for reference, since the inner side typically shows the layout and circuit assignments, helping identify the correct component without removing multiple parts.