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 spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Ignition Coil: Testing and Inspection

Ignition Coil Terminals:





1. Disconnect coil connector and remove coil from engine.
2. Measure resistance of coil primary and secondary windings as follows:

PRIMARY
Terminal(connector): Resistance:
F42(BW) & F45(Y) 0.84 - 102 Ohms

SECONDARY
Terminal: Resistance:
F42(BW) & secondary 8k - 12k Ohms