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

KF10 - Low Speed and/or High Speed Fan Does Not Operate



Fan Control Connector View:






- Key "OFF".

- Disconnect Low Fan Control (LFC) relay.

- Key "ON".

- Measure voltage from High Fan Control (HFC) RELAY pin at the LFC relay vehicle harness connector and battery negative post.

- Is voltage greater than 10.5 volts?

Yes -- Go to KF13.

No -- Go to KF11.