Operation CHARM: Car repair manuals for everyone.

Ignition Coil Testing


1. Be sure ignition is "OFF".
2. Remove coil wire from coil.

Ignition Coil Circuit Testing.:





Primary Circuit

3. Connect ohmmeter as shown. Reading should be approximately:

.8 - 1.0 ohms


Secondary Circuit

4. Connect ohmmeter as shown. Reading should be approximately:

8,000 - 12,000 ohms