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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Heating System


With the Ignition Switch in RUN and the Function Selector Switch in a position other than OFF, voltage is applied to the Blower Motor. With the Front Blower Switch in LO, curent flows through the Blower Motor and three resistors. In MED, LO, current flows through two resistors. In MED HI, current flows through one resistor. In HI, current does not flow through any resistor. With the Function Selector Switch in OFF, the Blower Motor does not run.