Performance Diagnosis - Suzuki GRAND VITARA XL-7 Owner's Manual

1B-10 AIR CONDITIONING (OPTIONAL)
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Performance Diagnosis

1) Confirm that vehicle and environmental conditions are as fol-
lows.
• Vehicle is not exposed to direct sun.
• Ambient temperature is within 15 - 35 °C (59 - 95 °F).
2) Make sure that high pressure valve (1) and low pressure
valve (2) of manifold gauge (3) are firmly closed.
3) Connect high pressure charging hose (4) to high pressure
service valve (5) on vehicle, and connect low pressure
charging hose (6) to low pressure service valve (7) on vehi-
cle.
4) Bleed the air in charging hoses (3), (4) by loosening their
respective nuts on manifold gauge, utilizing the refrigerant
pressure. When a hiss is heard, immediately tighten nut.
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CAUTION:
Do not interchange high and low pressure charging
hoses by mistake.
5) Warm up engine to normal operating temperature (engine
coolant temperature at 80 - 90 °C (176 - 194 °F)) and keep it
at specified idle speed.
6) Operate A/C at the following conditions.
• Main (front) A/C switch at ON position.
• Rear A/C main switch at ON position (if equipped).
• Front blower motor switch at max position.
• Rear blower motor switch at max position (if equipped).
• Air outlet control button at face position.
• Temperature control lever at max cool position.
• Vehicle door at all open.
• Air inlet door at recirculation position.
7) Keep all windows, doors and engine food open.
8) With about 20 mm (0.8 in.) of dry bulb thermometer (1)
inserted into center face air outlet (2), rear A/C air outlet (3)
(dual A/C model only) and near A/C evaporator air inlet, read
temperature indicated on each thermometer.
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