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 OF IGNITION COIL (3S-FE)






1. INSPECT PRIMARY COIL RESISTANCE.
- Using an ohmmeter, measure the resistance between positive (+) and negative (-) terminals.

Primary coil resistance (Cold): 0.38 - 0.46 ohms

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






2. INSPECT SECONDARY COIL RESISTANCE.
- Using an ohmmeter, measure the resistance between the positive (+) and high-tension terminals.

Secondary coil resistance (Cold): 7.7 - 10.4 k-ohms

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