GPD 5811584 External Control Valve Compressor Tester

The GPD 5811584 External Control Valve Compressor Tester is a professional diagnostic tool designed to help technicians quickly diagnose problems with external control valve compressors in automotive air conditioning systems. This battery-operated tester provides a simple three-step diagnostic process to verify compressor operation and pinpoint control valve issues.

Key Features:

• Digital resistance readings of the control valve for accurate diagnostics
• Tests input signal from the ECU with duty cycle percentage display
• Manual drive function allows technician to command the compressor control valve directly
• Battery-operated design for portability and convenience
• Includes 13 specific control valve plug adapters for broad vehicle coverage
• Digital display shows real-time resistance and duty cycle measurements

This professional-grade tester enables quick verification of variable displacement compressor systems, helping technicians identify whether problems originate from the control valve, ECU signal, or compressor operation. The comprehensive adapter kit ensures compatibility with multiple vehicle makes and models equipped with external control valve compressors.