You test an ignition coil by checking the resistance with an ohm meter. The resistance values should be something like, Primary winding .3 to 1 ohms, Secondary winding 8,000 to 11,500 ohms.
How would you really know if your ignition system components are having problems? Of course, you can't until you test them one by one. This is why it's important to regularly inspect your ignition components. But since the ignition system carries a lot of parts, it's going to take a lot of time to go through each one. So what's the best way for you to check your ignition system?
Actron ignition tester,can perform all types of electrical tests for your car.