Fluorescent Dye Injection Using a R-134a Loop/Add On Injector Kit-Set - Vehicles Not Requiring R-134a Addition

WARNING: This page is about a different car, the 2014 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Fluorescent refrigerant system dye is added to the refrigerant system at the factory to assist in refrigerant system leak diagnosis using a Rotunda-approved UV blacklight. It is not necessary to add additional dye to the refrigerant system before diagnosing leaks, even if a significant amount of refrigerant has been removed from the system. Replacement suction accumulators and receiver/driers are shipped with a fluorescent dye "wafer" included in the desiccant bag which will dissolve after approximately 30 minutes of continued A/C operation. It is not necessary to add dye after flushing or filtering the refrigerant system because a new suction accumulator or receiver/drier is installed as part of the flushing or filtering procedure.

NOTE: Before using the R-134a Loop/Add On Injector Kit-Set for the first time, refer to the equipment manufacturer's instructions on evacuation of non-condensable gases from the hoses.

NOTE: Refrigerant system pressure should be between 431 kPa (62.51 psi) to 551 kPa (79.91 psi) at 24°C (75.2°F) with the engine off and cool.

Verify that the valves on 219-00069 are closed.
Fill the reservoir with 7 ml (0.24 fl. oz) of fluorescent dye.
Install the 219-00069 between the high-pressure and low-pressure service gauge port valves.
NOTE: Make sure all tools and hoses are clear of the engine cooling fan and drive belt before starting the engine. Failure to keep tools and hoses clear from the engine cooling fan and drive belt will result in damage to the tools and/or vehicle.

With the A/C off, start the engine. Allow engine speed to stabilize below 1, 000 rpm.
Set the A/C to the ON position.
Open the high-pressure service valve.
NOTE: To prevent pressure spike/liquid slug, crack the R-134a Loop/Add On Injector Kit-Set valves and slowly open to inject the fluorescent dye into the refrigerant system.

Open the 219-00069 valves and inject the fluorescent dye into the refrigerant system.
Close the high-pressure service valve to allow the pressure inside 219-00069 to equalize with the suction side of the refrigerant system.
NOTE: Close the valves while the A/C compressor is operating.

Close the valves on 219-00069.
NOTE: Leave all valves on 219-00069 closed when not in use.

Disconnect the high-pressure and low-pressure service valves and remove 219-00069 from the vehicle.