DIAGNOSIS TEST
1) Confirm that vehicle and environmental conditions are as fol-
lows.
– Vehicle is not exposed to direct sun.
– Ambient temperature is within 15
C – 35
C (59
F – 95
F).
2) Make sure that high pressure valve (1) and low pressure valve
(2) of manifold gauge are firmly closed.
3) Connect high pressure charging hose (3) to high pressure ser-
vice valve (5) on vehicle, and connect low pressure charging
hose (4) to low pressure service valve (6) on vehicle.
4) Bleed the air in charging hoses (3), (4) by loosening their re-
spective nuts on manifold gauge, utilizing the refrigerant pres-
sure. When a hiss is heard, immediately tighten nut.
5) Warm up engine to normal operating temperature (engine cool-
ant temperature at 80 – 90
_
C, 176 – 194
_
F) and keep it at speci-
fied idle speed.
6) Turn A/C switch ON, and set blower switch at “HI” (3rd position),
temperature knob at “COOL”, air outlet control knob at “FACE”,
fresh/circulation control knob at “CIRCULATION”. (Confirm that
A/C compressor and condenser fan are working.)
7) Keep all windows, doors and engine food open.
CAUTION:
Do not interchange high and low pressure charging
hoses by mistake.
8) With about 20 mm (0.8 in.) of dry bulb thermometer (1) inserted
into center duct air outlet and another one set near evaporator
air inlet, read temperature indicated on each thermometer.
AIR CONDITIONING (OPTIONAL)
1B-7
A/C inlet air temperature
15 – 35
C (59 – 95
F)
Engine rpm
Keep to 1,500 rpm.
Blower fan motor switch
Max. (3rd position)
Temperature control
Max. cool
Air outlet control
Face
Doors
All open
Air inlet damper position
Recirculation
