Suzuki Jimny Service Manual page 75

1B-14 AIR CONDITIONING (OPTIONAL)
MPa
MANIFOLD
(kg/cm
GAUGE
(psi)
Lo
0.05 – 0.15
(0.5 – 1.5)
(4.2 – 21.3)
0.69 – 0.98
(7 – 10)
(100 – 142)
0.4 – 0.6
(4 – 6)
(56.9 – 85.3)
0.35 – 0.45
(3.5 – 4.5)
(50 – 64)
1.96 – 2.45
(20 – 25)
(285 – 355)
0.45 – 0.55
(4.5 – 5.5)
(64 – 78)
Condition
2
)
Detail
Hi
Both low and high pres-
sure sides indicate low
readings.
Continuous air bub-
bles are visible through
sight glass.
Output air is slightly
cold.
Pressure on low pres-
sure side is high.
Pressure on high pres-
sure side is low.
Both pressure becom-
ing equal right after A/C
is turned OFF.
Pressure on both low
and high pressure
sides is high.
Air bubbles are not visi-
ble even when engine
rpm is lowered.
Pressure on both low
and high pressure
sides is high.
Low pressure side tub-
ing is not cold when
touched.
Air bubbles are visible
through sight glass.
Pressure on both low
and high pressure
sides is high.
Large amount of frost
or dew on the low pres-
sure side tubing.
Possible Cause
Insufficient refrigerant in
system.
(Refrigerant leaking)
Internal leak in compres-
sor.
Overcharged A/C sys-
tem.
Faulty condenser cooling
operation.
Faulty condenser cooling
fan operation.
Presence of air in A/C
system.
(Improperly evacuated)
Faulty expansion valve.
Refrigerant flow is not
regulated properly.
Correction
Using leak detector,
check for leaks and repair
as necessary.
Recharge refrigerant to a
specified amount.
If the pressure reading is
almost 0 when the mani-
fold gauges are attached,
check for any leaks,
repair them, and evacu-
ate the system.
Inspect compressor and
repair or replace as nec-
essary.
Adjust refrigerant to
specified amount.
Clean condenser.
Inspect and repair con-
denser cooling fan.
Replace receiver / dryer.
Inspect quantity of com-
pressor oil and presence
of contaminants in oil.
Evacuate system and
recharge with fresh
refrigerant.
Replace expansion valve.