Suzuki Swift Sport 2004 Service & Repair Manual page 962

7B-14 Air Conditioning System: Manual Type
Manifold gauge MPa (kg/cm
Lo
0.27 – 0.43 1.59 – 1.94
(2.7 – 4.3) (15.9 – 19.4)
(38 – 61) (226 – 276)
0.5 – 0.6
Negative pressure (5 – 6)
(71.2 – 85.3)
Normal:
Normal: 1.59 – 1.94
0.27 – 0.43 (15.9 – 19.4)
(2.7 – 4.3) (226 – 276)
↑ ↓
(38 – 61)
↑ ↓
Abnormal:
Abnormal: 0.7 – 1.0
Negative pressure (7 – 10)
(100 – 142)
0.05 – 0.15
(0.5 – 1.5)
(4.2 – 21.3)
0.7 – 1.0
(7 – 10)
(100 – 142)
0.4 – 0.6
(4 – 6)
(56.9 – 85.3)
Condition
) (psi)
2
Detail
Hi
Normal condition
The low pressure side
reads a negative
pressure, and the high
pressure side reads an
extremely low pressure.
Presence of frost around
tubing to and from
receiver/dryer and
expansion valve.
During A/C operation, the
low pressure side
sometimes indicates
negative pressure, and
sometimes normal
pressure. Also high
pressure side reading
fluctuates between the
abnormal and normal
pressure.
Both low and high
pressure sides indicate
low readings.
Output air is slightly cold.
Pressure on low pressure
side is high.
Pressure on high
pressure side is low.
Both pressure becoming
equal right after A/C is
turned OFF.
Possible cause
—
Clean expansion
Dust particles or water valve.
droplets are either Replace it if it cannot
stuck or frozen inside be cleaned.
expansion valve, Replace receiver/
preventing the dryer.
refrigerant from Evacuate the A/C
flowing. system and recharge
with fresh refrigerant.
Replace expansion
Expansion valve is
valve.
frozen due to
Replace receiver/
moisture in the
dryer.
system, and
Evacuate A/C system
temporarily shuts off
and recharge with
the refrigeration cycle.
fresh refrigerant.
Using leak detector,
check for leaks and
repair as necessary.
Recharge refrigerant
to a specified amount.
Insufficient refrigerant
If the pressure reading
in system
is almost 0 when the
(Refrigerant leaking).
manifold gauges are
attached, check for
any leaks, repair
them, and evacuate
the system.
Inspect compressor
Internal leak in
and repair or replace
compressor.
as necessary.
Correction
—