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

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Multi-Function Thermal Sensor / Switch: Testing and Inspection

THERMAL LIMITER SWITCH
1. Unplug Thermal Limiter connector.
2. With an ohmmeter, check for continuity between the two terminals. If no continuity is present replace compressor.
3. The Thermal Limiter is calibrated to open and close at:
- Open circuit (no continuity) Temperature: 122 -128° C (252 - 262° F)
- Close circuit (continuity) Temperature: 106 -116° C (225 - 235° F)

NOTE: The thermal limiter switch is not serviceable. If the switch fails, the compressor must be replaced.