Electronic Refrigerant Leak Detector
Honda Pilot 2006-2008
Other gases in the work area or substances on the A/C components, for example, anti-freeze, windshield washer fluid, solvents and lubricants, may falsely trigger the leak detector. Make sure the surfaces to be checked are clean. Clean with a dry cloth or blow off with shop air.
- Turn engine off.
- Connect a suitable A/C manifold gauge set to the A/C service ports.
Check if the A/C refrigerant pressure is at least 50 psi above 16°C (61°F). If less than specification, recover/evacuate and recharge the system with the specified amount of refrigerant.
NOTEAt temperatures below 61°F (16°C), leaks may not be detected since the system may not reach 50 psi.
- Conduct the leak test from the high side (compressor discharge to evaporator inlet) to the low side (evaporator drain hose to compressor shaft seal). Perform a leak check for the following areas carefully.
- Clean the component to be checked and move the leak detector probe completely around the connection/component.
- For the compressor, check the fitting of high and low pressure hoses, relief valve and shaft seal.
- For the liquid tank, check the tube fitting.
For the service valves, check all around the service valves. Ensure service valve caps are secured on the service valves (to prevent leaks).
NOTEAfter removing A/C manifold gauge set from service valves, wipe any residue from valves to prevent any false readings by leak detector.
- For the cooling unit (Evaporator), with engine OFF , turn blower fan on High for at least 15 seconds to dissipate any refrigerant trace in the cooling unit. Wait a minimum of 15 minutes accumulation time before inserting the leak detector probe into the drain hose. Keep the probe inserted for at least ten seconds. Use caution not to contaminate the probe tip with water or dirt that may be in the drain hose.
- If a leak detector detects a leak, verify at least once by blowing compressed air into area of suspected leak, then repeat check as outlined above.
- Do not stop when one leak is found. Continue to check for additional leaks at all system components.
Honda Pilot 2006-2008
- Perform a visual inspection of all refrigeration parts, fittings, hoses and components for signs of A/C lubricant leakage, damage and corrosion. A/C lubricant leakage may indicate an area of refrigerant leakage. Allow extra inspection time in these areas when using either an electronic refrigerant leak detector or fluorescent dye leak detector.
- If dye is observed, confirm the leak with an electronic refrigerant leak detector. It is possible a prior leak was repaired and not properly cleaned.
- When searching for leaks, do not stop when one leak is found but continue to check for additional leaks at all system components and connections.
When searching for refrigerant leaks using an electronic leak detector, move the probe along the suspected leak area at 25 to 50 mm (1 to 2 in.) per second and no further than
from the component.
NOTEMoving the electronic leak detector probe slower and closer to the suspected leak area will improve the chances of finding a leak.