Thermal Limiting Fuse: Testing and Inspection
THERMAL FUSE1. The thermal fuse is located on the compressor clutch coil.
2. Outline
The thermal fuse will detect clutch slip heat (184 °C off) generated by faulty compressor operation, then interrupt the coil's power supply to stop the clutch operation. Therefore, clutch bearing and pulley bearing damage will not continue in order, to protect the belt and engine. Once the thermal fuse operates, vehicle power supply will be interrupted and the compressor will not operate. Then, check the clutch coil resistance (3.0 - 3.2 ohm) to find the thermal fuse condition, and replace the clutch coil if required.