Ignition Coil Resistance

Disconnect leads from ignition coil. Using an ohmmeter, check ignition coil secondary resistance (secondary tower-to-secondary tower). Secondary resistance should be less than 10,000 ohms. Ignition coil primary resistance value is not supplied by manufacturer. If ignition coil is suspected of causing misfire or no-spark condition, switch coil locations on ignition module. If problem follows questionable coil, replace original coil.