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Scan Tool Method

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  1. Attach clamp-on thermocouple to liquid line, as close to condenser outlet as possible. Attach scan tool to Data Link Connector (DLC), located right of steering column, under instrument panel. See Figure.
  2. Set parking brake, and place transaxle in Park position. Start engine and allow to idle. Set A/C controls to outside air, panel mode, full cool, and high blower speed. Turn A/C on and open windows. Operate system for a few minutes to allow system to stabilize.
  3. Place cardboard over front grille area to block flow of air through part of condenser to set A/C system pressure to 260 psi (18.3 kg/cm2 ). This will stop cooling fans from alternating speeds and maintain constant pressure.
  4. Scan tool will automatically calculate system charge. Depending on system charge condition, corrections are made 2 ounces at a time. Each time a correction is made, recheck readings to ensure proper charge. Total system refrigerant capacity is 1.56 lbs./25 ounces.
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