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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Water Temperature Switch - A/T Only

Water Temperature Sensor Switch:





Water Temperature Sensor Switch Inspection:





- Using an ohmmeter, check that there is no continuity between the terminal and switch body when the engine coolant temperature is below 98°C (208°F).


Water Temperature Sensor Switch Inspection:





- Using an ohmmeter, check that there is continuity between the terminal and switch body when the engine coolant temperature is above 105°C (221°F).

- If continuity is not as specified, replace the switch.