A/C System - (R-12) Leak Inspection Procedure: Overview

HEATING & AIR CONDITIONING
AC93-003
APRIL 16, 1993
ALL MODELS

Title: AIR CONDITIONING SYSTEM SERVICE

In 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 CFC's 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 atmosphere.





When servicing the A/C system it is mandatory to use a Lexus Approved refrigerant recovery machine (Lexus P/N 00002-01396-02) or its equivalent, and to use only the minimum amount of refrigerant necessary to test or charge the system.

The actual repair of each models A/C system is detailed in the appropriate Lexus 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.