Chinese ATV 5 Pin CDI Wiring Diagram

If you own a Chinese ATV, then you know how difficult it can be to find the right wiring diagram to help you troubleshoot and fix any issues that may arise. One of the most important components of the electrical system in your ATV is the CDI (Capacitive Discharge Ignition) unit. In this article, we’ll take a closer look at the wiring diagram for a 5 pin CDI unit and provide some helpful tips and FAQs to make the process easier for you.

What is a CDI Unit?

A CDI unit is responsible for controlling the ignition system in your ATV. Its primary function is to store and release electrical energy to the spark plug at the right time, which is crucial for starting and running the engine. The CDI unit works by charging up a capacitor and releasing its stored energy to the ignition coil. This creates a high voltage spark that ignites the fuel and air mixture in the engine.

There are several different types of CDI units available, but the most common type used in Chinese ATVs is the 5 pin CDI unit. This type of CDI unit is typically found on smaller ATVs with engines ranging from 50cc to 110cc.

Wiring Diagram for a 5 Pin CDI Unit

The wiring diagram for a 5 pin CDI unit can be quite complex, but it’s important to understand how each wire connects to the various components of the electrical system. Below is a table that shows the color coding and function of each wire in a typical 5 pin CDI unit:

Wire Color Function
Black/Yellow Ignition Coil
Red/Yellow Power Supply
Green Ground
Blue/White Kill Switch
Yellow/Red Starter Motor

It’s important to note that the wire colors and functions may vary depending on the manufacturer and model of your ATV. Always refer to the wiring diagram specific to your ATV to ensure proper connections.

FAQs

1. What should I do if my ATV won’t start?

If your ATV won’t start, the first thing you should check is the battery. Make sure it’s fully charged and that all connections are clean and tight. If the battery is good, then you may need to check the CDI unit and wiring for any issues.

2. Can I use a 5 pin CDI unit on my larger ATV?

No, a 5 pin CDI unit is typically only used on smaller ATVs with engines ranging from 50cc to 110cc. Larger ATVs will require a CDI unit with more pins and a higher output to match the engine size.

3. How do I know if my CDI unit is bad?

If your ATV is experiencing issues such as no spark or intermittent spark, then it’s possible that the CDI unit is faulty. You can test the CDI unit with a multimeter to check for continuity and resistance, or you can take it to a professional for testing.

4. Can I replace a 5 pin CDI unit with a 4 pin CDI unit?

No, you cannot replace a 5 pin CDI unit with a 4 pin CDI unit as they have different functions and wiring configurations. Always use the CDI unit specified for your ATV model and engine size.

5. What is the best way to troubleshoot CDI unit wiring?

The best way to troubleshoot CDI unit wiring is to refer to the wiring diagram specific to your ATV, and then use a multimeter to test each wire for continuity, resistance, and voltage output. Make sure all connections are clean, tight, and free of corrosion.

In conclusion, the wiring diagram for a 5 pin CDI unit can be complex, but by understanding the color coding and function of each wire, and following the FAQs above, you can troubleshoot and fix any issues that may arise with your Chinese ATV’s electrical system.