Four Seasons Electronically Controlled Variable Displacement Compressor (ECV) Diagnostic Tool HD

Many of todays vehicles are now equipped with an ECV Compressor. These compressors do not have a conventional clutch, meaning the compressor shaft turns all the time, even when the air-conditioning is off! This sophisticated technology can make it difficult to determine if poor air conditioning performance is being caused by a computer control issue or a refrigeration system issue. This can result in an expensive misdiagnoses and unnecessary compressor replacement. Four Seasons new Compressor Driver Tool puts YOU in direct control of Compressor pumping displacement, making diagnoses simple and easy!