
To troubleshoot any electrical issues, first locate the main power distribution panel in the engine compartment. This panel controls the key electrical functions such as the alternator, headlights, and engine sensors. For easy access, open the hood and look near the battery for the power relay unit. The cover should have a map that shows the exact location of each electrical component.
Inside the vehicle, another relay unit manages the interior features, including air conditioning, dashboard lights, and power outlets. You can find this panel under the dashboard, usually near the driver’s seat. Removing the cover will expose the relays, each clearly labeled for quick identification. This section is important for fixing any cabin-related electrical faults, such as malfunctioning lights or the radio.
When replacing any damaged electrical parts, make sure to use the correct specifications to prevent overloading the circuits. Always consult the vehicle’s manual for the proper amperage and type of relays. Regular inspection of these units will ensure your electrical system continues to perform optimally without disruptions.
2020 Van Electrical System Layout

For quick access to the primary electrical components, open the engine compartment and locate the power relay panel. It’s positioned near the battery and serves as the control center for critical systems like the alternator and ignition. The panel cover will have a map that labels each slot, helping you identify the correct fuse for troubleshooting or replacement.
The interior relay panel, located under the dashboard, is responsible for managing systems inside the cabin, including lighting, climate control, and infotainment. This panel can be accessed by removing the cover near the driver’s side footwell. Each relay is labeled, making it easy to pinpoint the malfunctioning component when necessary.
If you’re experiencing issues with exterior lights or the horn, start by inspecting the power distribution unit under the hood. These fuses are often the first to blow in case of power surges. Use the fuse map provided on the lid of the unit to quickly identify the relevant fuses and check for damage.
Inside the cabin, malfunctioning electronics like the air conditioning or power windows can often be traced back to a blown relay. The interior unit has a section dedicated to non-engine systems, so it’s important to check this part whenever the cabin systems stop functioning properly. Replacement fuses should match the required amperage as listed in the owner’s manual.
It’s a good idea to regularly inspect both the engine and interior relay panels to ensure all connections are secure and there’s no sign of corrosion. Clean the contacts as needed and keep a set of replacement relays in your toolkit to ensure quick repairs in case of electrical issues on the road.
Locating the Main Power Distribution Panel Under the Hood

To access the main electrical control unit, open the hood and look near the vehicle’s battery. The panel is typically located on the driver’s side of the engine compartment, positioned close to the front. This unit is responsible for powering major components like the alternator, engine sensors, and headlights. The cover of the relay unit usually has a diagram indicating each fuse slot, making it easier to locate and identify the specific part you need to check.
When inspecting this panel, ensure the area is clear of debris or corrosion. If any component is malfunctioning, check the corresponding fuse in this compartment. Use the guide on the lid to find the correct fuse for the failing system, and always replace a blown relay with the exact specifications recommended by the manufacturer. Regular checks will help maintain smooth operation of the vehicle’s electrical system.