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- Low pressure in line with value in - Required cooling output is not - High pressure normal. - Low pressure too low (see - Required cooling output is not - High pressure normal. - Low pressure too low (see - Required cooling output is not - Not enough refrigerant in - Extract refrigerant from - If quantity of refrigerant extracted - Localize leak using leak detector - Re-charge refrigerant circuit. - Repeat test. - If quantity of refrigerant extracted
- Expansion valve malfunctioning - Replace expansion valve. - Re-charge refrigerant circuit. - Repeat test. Note: - If no malfunction is found in - Check measured values of - If the function of the air Pressures, checking on vehicles 13/2/2005 |