Operation CHARM: Car repair manuals for everyone.

Ignition Coil


1. Disconnect electrical wiring, ignition coil and high tension cable (coil wire) from connector assembly.
2. Set range scale of ohmmeter to the x1 and x1K range and measure resistance of the following:
a. At a temperature of approximately 70 degrees F, primary coil resistance should be 1.1-1.4 ohms.
b. At a temperature of approximately 70 degrees F, secondary coil resistance should be 12.1-14.9 kilo ohms.
c. At a temperature of approximately 70 degrees F, insulation resistance should exceed 10 mega ohms.