Special tool
 | Automatic Calibrated Halogen Leak Detector or equivalent |
 | R-134a Refrigerant Pressure Gauge Kit or Equivalent |
 | Refrigerant identifier or equivalent |
WARNING: Before performing the leak detection procedure, ensure that the work area is well ventilated. If the surrounding air is contaminated with refrigerant gas, the leak detector will always indicate the presence of this gas. Other chemical odors such as antifreeze, diesel fuel, brake cleaner, or other cleaning solvents will cause the same problems. Avoid any air movement while leak detection.
1.
CAUTION: Refrigerant identification equipment must be used before installing the gauge set, otherwise the gauge set may become contaminated. Contaminated refrigerant must be disposed of as special waste. Follow the manufacturer's instructions when working with the service unit.
NOTE: With the engine off, both gauges should read 4.1-5.5 bar at 24 degrees C.
Connect a set of pressure gauges to the service port valves to check the pressure.
1. To check for leaks, close the manual valves on the gauge set.
2. If little or no pressure is indicated, charge approximately 300 g of refrigerant into the system. For more information, refer to the Repairing, Evacuating, and Charging the Air Conditioning (A/C) System chapter in this section.
2. Use an automatic calibrated R134a halogen leak detector to detect leaks in the refrigerant system. For information on detecting leaks using a leak detector and on operating the leak detector, refer to the instructions supplied with the leak detector.
3. If a leak is found, repair the A/C system. For more information, refer to the Repairing, Evacuating, and Charging the Air Conditioning (A/C) System chapter in this section.
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