How to Test an Automotive Ignition Coil?

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Testing methods for ignition coils include: 1. When testing an ignition coil, the primary method involves using a multimeter to measure the resistance values of the primary and secondary windings. 2. The performance of an ignition coil can be tested on a universal test bench, mainly by measuring the spark gap to determine its performance. Additional information: 1. An ignition coil is a transformer that generates the high voltage required for ignition, converting 12V low voltage into 15–20kV high voltage. 2. However, the working principle of an ignition coil differs from that of a regular transformer. While a regular transformer operates continuously, an ignition coil works intermittently, storing and releasing energy at varying frequencies depending on the engine's speed.