Peugeot 406 Fuse Box and Relay Diagrams - Complete Guide

The Peugeot 406, a popular mid-size car from the late 90s and early 2000s, is known for its balance of performance and comfort. For owners and mechanics, understanding the fuse box diagram is essential for troubleshooting and maintaining the vehicle's electrical functions. This guide provides comprehensive information on the fuse box layout and functions, aiding in quick identification of any issues.

Understanding the Fuse Box Layout

In the Peugeot 406, the fuse box is strategically placed to protect the electrical circuits of the vehicle. Located in the passenger compartment, right under the dashboard, and another under the hood near the battery, these fuse boxes are designed to prevent any electrical fires or component malfunctions.

Passenger Compartment Fuse Box

This fuse box controls many essential functions such as lighting, central locking, and infotainment systems. Here are the basic steps to access it:

• Turn off the ignition and remove the key to ensure safety.
• Locate the fuse panel cover under the dashboard on the driver's side.
• Use the vehicle manual to help identify specific fuses.

Under-Hood Fuse Box

The under-hood fuse box is primarily responsible for the engine compartment's electrical components including the fuel system, cooling fan, and air conditioning. Accessing and inspecting these fuses regularly can prevent common electrical issues.

Troubleshooting Common Issues

Identifying a blown fuse is straightforward once you have access to the diagram. A switched-off component could hint at a blown fuse which you can verify visually. The wire inside the fuse will appear broken or charred. Here’s how you can replace a blown fuse:

1. Identify the blown fuse using the diagram.
2. Use a fuse puller or pliers to remove the faulty fuse.
3. Replace it with a new fuse of the same rating to ensure safety.

For persistent issues, consulting with a professional mechanic is advisable. Proper maintenance and understanding of the Peugeot 406 fuse box can save both time and money, ensuring your ride continues smoothly.