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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Temperature Switch

INSPECTION




INSPECT WATER TEMPERATURE SWITCH
Using a ohmmeter and thermometer, check continuity between terminals.

Standard:
No continuity at 48 °C (118.4 °F) or less
Continuity at more than 55 °C (131 °F)