download recent years, there has been a growing concern for the effects of
chemical substances on the environment throughout the world. One of the
substances that has attracted attention is the R-12 refrigerant used in
automotive air conditioning (A/C) systems. The chemical name for R-12
is Chlorofluorocarbon (CFC) and it has been identified along with
CFCs from other sources as being a contributing factor in the
depletion of the ozone layer in the earth’s atmosphere. The ozone
layer provides protection from the harmful effects of the sun’s
ultraviolet rays. Consequently it is very important to minimize
the amount of refrigerant released into the atmo- sphere. When
servicing the A/C system it is mandatory to use a Toyota Approved
R-12 refrigerant recovery machine (Toyota P/N 00002-01396-01 ) or
its equivalent, and to use only the minimum amount of refrigerant
necessary to test or charge the system. The actual repair of each
model’s A/C system is detailed in the appropriate Toyota repair manual.
However, to aid you in making quick, accurate diagnosis and repair of
low refrigerant level conditions, the following inspection
procedures have been developed
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