Subaru Coil Pack Wiring Diagram

If you own a Subaru and are experiencing ignition problems, the issue could be with the coil pack wiring. The coil pack is a vital component in your engine’s ignition system, responsible for creating the electrical spark needed to ignite the fuel in the combustion chambers. Without this spark, your engine will not start or run correctly. Here is everything you need to know about the Subaru coil pack wiring diagram.

What Is a Coil Pack?

A coil pack is a group of individual ignition coils that are mounted together on a common block. These coils generate high voltage that is sent to the spark plugs, which ignite the fuel in the combustion chamber. Each coil in the pack is responsible for firing one spark plug, and a failure in any one of the coils can lead to misfires, rough running, and poor fuel economy.

Subaru models use a coil-on-plug (COP) ignition system, which means that each spark plug has its own individual ignition coil. This design provides more precise control over ignition timing and allows for better combustion efficiency.

Subaru Coil Pack Wiring Diagram

The Subaru coil pack wiring diagram is relatively simple, with each coil connected to a power source and a signal wire. The power source is supplied by the battery, and the signal wire is connected to the engine control module (ECM). When the ECM sends a signal to the coil, it triggers the coil to generate a high voltage spark that ignites the fuel in the combustion chamber.

The diagram may vary slightly depending on the specific Subaru model you have, but the basic wiring system remains the same. It is important to understand the wiring diagram and ensure that all connections are secure and properly routed to prevent ignition problems.

Subaru Coil Pack Wiring Diagram FAQ

Question Answer
What causes coil pack failure on Subaru? Common causes of coil pack failure on Subaru include age, high mileage, exposure to extreme temperatures, and moisture intrusion.
How do I know if my Subaru coil pack is bad? You may notice symptoms such as misfires, rough running, loss of power, and difficulty starting your engine. You may also see a check engine light illuminated on your dashboard.
Can I test my Subaru coil pack? Yes, you can use a multi-meter to test the resistance of each coil in the pack. Consult your vehicle’s manual for specific instructions.
What is the cost to replace a Subaru coil pack? The cost to replace a Subaru coil pack can vary depending on the model and year of your vehicle, as well as the location of the repair shop. On average, you can expect to pay between $200 and $500 for parts and labor.

Conclusion

The Subaru coil pack wiring diagram is an essential component of your engine’s ignition system. Properly understanding and maintaining this wiring can help prevent ignition problems and keep your engine running smoothly. If you suspect a problem with your ignition system or coil pack, it is important to address it promptly to avoid further damage and costly repairs.