How do you test a Subaru ignition coil with a multimeter?

Testing a Subaru Ignition Coil with a Multimeter
To test a Subaru ignition coil with a multimeter, you will need to follow these steps:
1. Inspect Spark Plugs and Wires: Before testing the ignition coils, it’s a good idea to inspect the spark plugs and wires as well.
2. Prepare the Tools: You will need a digital multimeter to measure resistance.
3. Open the Hood and Unplug Connectors: Open the hood of your Subaru and unplug all four wire pin connectors on the coil pack.
4. Connect the Multimeter: Plug the multimeter leads into the left two outlets on the face of the coil pack. The resistance reading should be about 0.73 ohms, plus or minus 10%. Repeat the process with the right two outlets on the coil pack. If either reading is well below or above 0.73, then there’s an issue with the ignition coil pack and it needs to be replaced.
It’s important to note that the resistance specifications may vary for different Subaru models, so it’s always a good idea to verify the resistance specifications for your specific Subaru model.
If the coil pack looks good and the resistance readings are within the specified range, then the ignition coil pack is likely functioning properly.
Please keep in mind that these steps are specific to testing a Subaru ignition coil with a multimeter. The process may vary for other vehicle makes and models.
I hope this helps! Let me know if you have any other questions.

What is the resistance of the ignition coil?

The ohmic resistance of the coil is around 0.2–3.0 Ω on the primary side and around 5–20 kΩ on the secondary side. The winding ratio of primary to secondary winding is 1:100. The technical structure may vary depending on the ignition coil’s area of application.

How do I know if I need new coil packs?

Engine Has Trouble Starting or Doesn’t Start
If turning your key in the ignition causes the engine to crank but not start, you may have a coil pack that needs replacing. This is because a failing coil will struggle to generate enough voltage to ignite the air-fuel mixture in the combustion chamber.

How do you test a Subaru coil pack?

The only tool you’ll need is a digital multimeter to measure resistance. Open your hood and unplug all four wire pin connectors on the coil pack. Plug the multimeter leads into the left two outlets on the face of the coil pack. The resistance reading should be about 0.73 ohms, plus or minus 10%.

What setting do I put my multimeter on to test an ignition coil?

And the other end to either the spark plug spring or clip. And if you have been able to remove the HT. Lead then you can touch it onto the Barb of the ignition coil.

How do I know if my ignition coil is bad with a multimeter?

I will explain it further when we test the faulty coil plug. Foreign this is the faulty coil plug same method as before remove the rubber boot and check the lower connector for readings.

How do I know if my coil pack is bad?

How do you tell if a coil pack is bad? With the engine idling, unplug one coil pack at a time. Unplugging it should make the engine run much rougher. If the engine doesn’t change, then that coil pack isn’t working.

How do you test a car coil with a multimeter?

Goes. I’m going to set your meter down to a low ohm setting because on the primary side you’re looking for less than five ohms. And you’re going to go positive to positive negative to negative.

What is the easiest way to check an ignition coil?

If you suspect the coil is dead, you can also remove the coil, plug it back in, and use an ignition spark tester like OEM 25069 to determine if the coil is firing. You can also use a multimeter to test resistance.

What is the difference between a coil pack and an ignition coil?

Modern cars may use one ignition coil for each cylinder or pair of cylinders, and do not require a distributor. If your car has individual coils for each cylinder or pair of cylinders, they may be all contained inside of one single molded block with multiple high-tension terminals, which is commonly called a coil pack.

How many ohms should a ignition coil read?

So make sure there’s no oil on your terminals. And also when you test these things don’t have any other wires hooked up pretty much have it looking like you have here with no wires on the primary side