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

Air Conditioning Switch: Testing and Inspection

A/C Switch

1. Disconnect negative (-) cable at battery.
2. Remove heater control knobs and panel.
3. Disconnect A/C switch connector to remove A/C switch.




4. Use an ohmmeter to check A/C switch for proper continuity between each terminal.
If A/C switch shows no continuity, replace it.