Operation CHARM: Car repair manuals for everyone.

Ignition Coil Testing

Ignition Coil Testing:





1. Disconnect the distributor lead and wiring from the coil.
2. Connect an ohmmeter as shown in step 1 of the image above. Use the high scale. The reading should be infinite. If not replace coil.
3. Connect an ohmmeter as shown in step 2 of the image above. Use the low scale. The reading should be very low or zero. If not, replace coil.
4. Connect an ohmmeter as shown in step 3 of the image above. Use the high scale. The meter should NOT read infinite. If it does, replace the coil.
5. Reconnect the distributor lead and wiring to the coil.