EVDC100: Diagnosis of compressors

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EVDC100: Diagnosis of compressors

Diagnosis of variable vehicle compressors - Variable displacement compressors are used in newer vehicles to reduce fuel consumption, and require new testing methods


  • Preventing misdiagnosing of customer vehicles
  • Correctly diagnose and verify control valve and compressor function
  • Adjustable tester dial mimics variable voltage signal to compressor
  • Variable compressors are used in vehicles from GM, Ford, Toyota, FCA, BMWand more
  • Use of variable compressors is likely to increase as they reduce tailpipe emissions, increase fuel economy and eliminate AC system engagement “bump” and power reduction
Electronic Test Instruments