How to Test an Ignition Coil Using a Multimeter
Learn how to easily test your vehicle's ignition coil with a multimeter to diagnose faults and ensure proper engine performance.
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Yes, you can test an ignition coil yourself using a multimeter. First, ensure the vehicle is off and locate the ignition coil. Disconnect the coil and set your multimeter to the ohms setting. Place the red lead on the positive terminal and the black lead on the negative terminal of the coil. A healthy coil should show a reading typically between 0.4 and 2 ohms. If the reading is outside this range, the coil may be faulty.
FAQs & Answers
- What is the normal resistance range for an ignition coil? A healthy ignition coil typically shows a resistance reading between 0.4 and 2 ohms on a multimeter.
- Can I test an ignition coil without removing it? It's best to disconnect the ignition coil first to get an accurate resistance reading without interference from the vehicle's electrical system.
- What does a faulty ignition coil reading look like on a multimeter? If the resistance reading is significantly higher or lower than 0.4 to 2 ohms, the ignition coil may be faulty and require replacement.