Understanding Coil on Plug Wiring Diagram: A Comprehensive Guide

Coil on plug (COP) ignition system has been in use for a long time now. This system is responsible for producing the high voltage required to ignite the fuel-air mixture in the combustion chamber. The COP ignition system has replaced the traditional spark plug wires and distributor cap. The COP ignition system consists of individual coils that are mounted directly onto the spark plugs. This article will take you through the basic components of the COP system and how they are wired.

Components of the COP Ignition System

The COP ignition system consists of four main components:

  1. Coils
  2. Spark plugs
  3. Wiring harness
  4. Power source

1. Coils

The coils used in the COP ignition system are typically of the inductive type. They consist of a primary winding and a secondary winding. The primary winding is connected to the power source, and the secondary winding is connected to the spark plug. When the power source is turned on, current flows through the primary winding, creating a magnetic field. When the current is turned off, the magnetic field collapses, inducing a high voltage in the secondary winding, which is then delivered to the spark plug.

2. Spark Plugs

The spark plugs used in the COP ignition system are similar to those used in traditional ignition systems. They consist of a center electrode and a ground electrode. When the high voltage is delivered to the spark plug, it creates a spark between the center and ground electrodes, igniting the fuel-air mixture in the combustion chamber.

3. Wiring Harness

The wiring harness is responsible for delivering power to the coils and for transmitting the high voltage from the coils to the spark plugs. The wiring harness consists of a series of wires that are connected to the coils and the power source.

4. Power Source

The power source for the COP ignition system is usually the vehicle’s battery. The battery supplies power to the coils through the wiring harness.

Wiring Diagram for the COP Ignition System

The COP ignition system is wired in a series configuration. This means that the coils are connected in a daisy chain, with each coil connected to the next in line. The first coil in the series is connected directly to the power source, and the last coil in the series is connected to ground. The wiring diagram for the COP ignition system is shown below:

Coil Number Power Source Ground
1 Battery 2
2 1 3
3 2 4
4 3 Ground

FAQs

What is a COP ignition system?

A COP ignition system is an ignition system that uses individual coils mounted directly onto the spark plugs. It has replaced the traditional spark plug wires and distributor cap in modern vehicles.

How does the COP ignition system work?

The COP ignition system consists of individual coils that are mounted directly onto the spark plugs. When the power source is turned on, current flows through the primary winding of the coil, creating a magnetic field. When the current is turned off, the magnetic field collapses, inducing a high voltage in the secondary winding, which is then delivered to the spark plug to ignite the fuel-air mixture in the combustion chamber.

What are the components of the COP ignition system?

The COP ignition system consists of coils, spark plugs, a wiring harness, and a power source.

How is the COP ignition system wired?

The COP ignition system is wired in a series configuration, with each coil connected in a daisy chain. The first coil is connected directly to the power source, and the last coil is connected to ground.

What are the advantages of the COP ignition system?

The advantages of the COP ignition system are improved reliability, reduced emissions, improved fuel economy, and better performance.

What are the common problems with the COP ignition system?

The common problems with the COP ignition system are misfires, rough idle, and reduced power. These problems are usually caused by faulty coils, spark plugs, or wiring harness.

Understanding the wiring diagram of the COP ignition system is essential for proper troubleshooting and maintenance. Hopefully, this article has provided you with a comprehensive guide to the components and wiring diagram of the COP ignition system.