Operation CHARM: Car repair manuals for everyone.

Ignition Coil Testing


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

Ignition Coil Primary Circuit:





Primary Circuit

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

1.0 - 1.2 ohms

Ignition Coil Secondary Circuit:





Secondary Circuit

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

7,300 - 11,000 ohms