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)

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KF14 - Check LFC Power-to-Fan Circuit Continuity



Fan Control Connector View:






- Key "OFF".

- Low Fan Control (LFC) relay disconnected.

- Disconnect cooling fan.

- Measure resistance between the LFC power-to-fan output pin, at the LFC vehicle harness connector and the LFC power-to-fan input pin at the cooling fan vehicle harness connector.

- Is resistance less than 5.0 ohms?

Yes -- Go to KF15. KF15 - Check Cooling Fan Ground Circuit

No -- Service open circuit. Reconnect all components. Re-evaluate symptom.