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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Initial Inspection and Diagnostic Overview


SYSTEM DIAGNOSIS

Engine warm and running at idle. If air flow does not come from the proper outlets under one or more operating modes, at least one of the air doors is not moving to the proper position.

Check the operation of the air valves using the following chart. Put Blower Switch in HI to give a strong flow of air.


Air Door Position Chart: