A/C Refrigerant Leak Check
A/C Refrigerant Leak Check
Special Tools Required
- Leak detector YGK-H-10PM
- Leak detector HLD-100
- Leak detector TIFZX-1, or commercially available These tools are available through the Honda Tool and Equipment Program.
CAUTION
- Air conditioning refrigerant or lubricant vapor can irritate your eyes, nose, or throat.
- Be careful when connecting service equipment.
- Do not breathe refrigerant or vapor.
- IMA components are located near A/C system components. Make sure you have read the IMA service precautions High Voltage Safety before doing repairs or service.
These tools are available through the Honda Tool and Equipment Program.
NOTE:
- If accidental system discharge occurs, ventilate the work area before resuming service.
- Additional health and safety information may be obtained from the refrigerant and lubricant manufacturers.
- Check the system for leaks using an R-134a refrigerant leak detector with an accuracy of 14 g (0.5 oz) per year or better
Leak Detector Usage Tips (Refer to the Operator's Manual for complete operating instructions):
- Position the vehicle in a wind-free work area. This will aid in detecting small leaks.
- When using the leak detector for the first time, allow it to warm up for 2 minutes with the probe in a clean atmosphere. This lets the temperature sensor in the detector stabilize.
- The calibration check should be done in the "Search 2" mode. Once that is done, the other check modes do not need calibrating.
- When leak checking through the HVAC module drain hose, avoid drawing water into the probe. Water can damage the internal pump and sensor.
- Avoid creasing the flexible probe extension. Creases can restrict air flow and give false readings.
- Because the detector recalibrates itself for ambient gases, it may be necessary to move the detector away from the leak to clear the sensor. Once the sensor has cleared, recheck the suspected leak.
- When removing the clear probe tip, be careful not to lose the flow ball.
- R-134a is heavier than air, always check below and to the sides of all potential leak sources.
- Halogen leak detectors are sensitive to chemicals: windshield washing solutions, solvents/cleaners, and some vehicle adhesives. Keep these chemicals out of the area when doing leak detection.
1. Connect an R-134a refrigerant recovery/recycling/charging station (A) to the high-pressure service port (B) and the low-Connect an R-134a refrigerant recovery/recycling/charging station (A) to the high-pressure service port(B) and the low-pressure service port (C), as shown, following the equipment manufacturer's instructions.
2. Recover refrigerant from the A/C system, A/C Refrigerant Recovery and evacuate the system. A/C System Evacuation If the system achieves a vacuum of approximately 93.3 kPa (700 mmHg, 27.6 in.Hg) in 15 minutes, and holds the vacuum for 15 minutes, then the system dose not have a leak at this time. If the system cannot achieve or hold a vacuum, continue the refrigerant leak check.
3. Open the high pressure valve to charge the system to the specified capacity.
Select the appropriate units of measure for your refrigerant charging station.
Refrigerant Capacity:
400 to 450 g
0.40 to 0.45 kg
0.9 to 1.0 lbs
14.1 to 15.9 oz
4. With the engine OFF, use a halogen leak detector first to detect the leak source. Follow a continuous path in order to ensure that you will not miss any possible leaks. Test the following areas of system for leaks.
