Acura 2002 RSX Service Manual page 1150

Climate Control
A/G System Tests (cont'd)
Pressure Test
Te3t r$ults
Related svmDtoms
Probable cause
Remedy
Discharge (high)
abnormally high
After stopping compressor, pressure
drops to about 196 kPa 12.0 kg cm' ,2A
o s i ) o u i c k l v - a n d t h e n I a l l s d r a . i , a l l v
B e c o v e r , e v a c u a t e l s e e p a g e 2 1 6 1 ) ,
and recharge with specified amount
{ s e e o a a e 2 1 - 6 2 ) .
Reduced or no airflowthrough
Clogged condenser or radiator
fins
Condenser or radiator Ian not
workano orooerlv
Clean
Check voltage and fan rpm.
Checkfan direction.
Line to condenser is excessively hot.
Restricted flow of relr;gerant in
Restricted lines
Discharge pressure High and low pressures are balanced
soon after stopping compressor. Low
side is hiqherthan normal.
Faulty compressor discharge
Faultv comDressor seal
Replace the compressor.
outlet of expansion valve is not
frosted, low-pressure gauge indicates
Faulty expansaon valve
[,4oisture in system
Replace
Recover, evacuate, and recharge
with soecified amount.
Suction {low}
pressure
abnormally low
Expansion valve is not frosted, and
low-pressure line is not cold. Low,
pressure oauoe indicates vacuum.
Frozen expansion valve
(Moisture in system)
Faultv exoansion valve
Recover, evacuate, and recharge
with speclfied amount.
ReDlace the exDansion valve
Discharge temperature is low, and the
air flowfrom vents is.esfricied
Frozen evaporator
Run the fan with compressor off, then
check evaoorator temoerature senso.
Expansion valve is frosted,
C l o q q e d e x o a n s i o n v a l v e
C l e a n o r r e p l a c e .
Receiver/dryer outlet is cool, and inlet
as warm (should be warm during
operalron),
C l o g g e d r e c e i v e r / d r y e r
B e p l a c e
Suction pressure
abnormally high
Low-pressure hose and checkioint are
cooler than the temperature around
evaooratot.
Expansion valve open too long
Repair or replace.
Suction Dtessure is lowered when
condenser is cooled bv water.
Excessive refrigerant in system
Recover, evacuate, and recharge with
specified amount.
High and low-pressure are equalized
as soon asthe compressor is stopped,
and both gauges fluctuate while
runnrno_
Faulty gasket
Faulty high-pressure valve
Foreign particle stuck in high
Replace the compressor.
Suction and
discharge
pressures
abnormallv hioh
Reduced air flow through condenser. ' Clogged condenser or radiator
fins
' Condenser or radiatorfan not
workinq Drooerlv
Clean
Check voltage and fan rpm.
Check fan direction.
Suctaon and
discharge pressure
Low-Drossure hose and metalend
areas are cooler than evrno.efor
Clogged or kinked low-pressure
hose Darts
Repair or replace,
Temperature around expansion valve
is too lowcompared with that around
Clogged high pressure line
Repair or replace.
Refrigerant leaks Compressor clutch is dirtv.
:ompressor shaft seal leakinq
R e o l a c e r h c c o m n r p s c o r
Compressor bolt(s) are dirtv-
.9aking around bolt(s)
Tighten bolt(s) or replace compressor.
Compressor qasket is wet with oil.
Gasket leakinq
Eeplace the compressor.
21-66