Thermal Limiter Switch: Description
WARNING: This page is about a different car, the 2005 Dodge Stratus and 2005 Chrysler Sebring. However, it is still accessible from the selected car via links, so may be relevant.
A thermal limiter switch is used on A/C compressor in vehicles equipped with the 2.0L engine and the 2.4L Turbo engine. The thermal limiter switch measures A/C compressor surface temperature. If the compressor surface temperature rises above a predetermined range, the thermal limiter switch cuts the battery feed to the A/C clutch field coil to prevent damage to the A/C compressor. The thermal limiter switch will reset once the compressor temperature returns to safe operating temperatures.