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

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Ignition Coil: Testing and Inspection


INSPECTION

INSPECT IGNITION COILS
(a) Disconnect the high-tension cords from the ignition coils.
(b) Disconnect the ignition coil connectors.





(c) Using an ohmmeter, measure the primary coil resistance between the positive (+) and negative (-) terminals.





Primary coil resistance

If the resistance is not as specified, replace the ignition coil.





(d) Using an ohmmeter, measure the secondary coil resistance between the positive (+) and high-tension terminal.





Secondary coil resistance

If the resistance is not as specified, replace the ignition coil.
(e) Connect the ignition coil connectors.
(f) Connect the high-tension cords to the ignition coils.