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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Control Assembly: Testing and Inspection

Vent Mode Switch Testing:






1. Disconnect negative battery cable.
2. Remove instrument cluster.
3. Disconnect heater control cables and vent mode switch connector.
4. Check for continuity across terminals at vent mode position. If there is no continuity, replace vent mode switch.