Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the logical successor to CHARM, I recommend you try it!

Link: lemon-manuals.la

Ignition Coil: Testing and Inspection

Check the ignition coil assembly for insulation. Check terminals for corrosion or damage, and replace as necessary.




Measuring resistance of ignition coil assembly.




Measure resistance of ignition coil assembly, and replace the ignition coil assembly if its value exceeds the standard.