Use only service equipment that is U.L.-listed and is certified to meet the requirements of SAE J2210 to remove HFC-134a (R-134a) from the air conditioning system.
After recharging refrigerant gas, check for leakage of refrigerant gas using a halogen leak detector.
Carry out under the following conditions::
- Stop the engine.
- Secure good ventilation (the gas leak detector may react to volatile gases which are not refrigerant, such as evaporated gasoline and exhaust gas).
- Repeat the test 2 or 3 times.
- Make sure that there is some refrigerant remaining in the refrigeration system. When the compressor is off: approx. 392 to 588 kPa (4 to 6 kgf/cm2, 57 to 85 psi)
Using a gas leak detector, check for leakage of the refrigerant line.
Bring the gas leak detector close to the drain hose with the detector's power off.
NOTEAfter the blower motor has stopped, let the cooling unit stand for more than 15 minutes. Bring the gas leak detector sensor under the drain hose. When bringing the gas leak detector close to the drain hose, make sure that the gas leak detector does not react to volatile gases. If such reaction is unavoidable, the vehicle must be lifted up.
- If a gas leak is not detected on the drain hose, remove the blower motor control from the cooling unit. Insert the gas leak detector sensor into the unit and perform the test.
Disconnect the pressure switch connector and leave it for approximately 20 minutes. Bring the gas leak detector close to the pressure switch and perform the test.