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

Highlights:

• 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