2000 HONDA CIVIC Condenser

Troubleshooting
Condenser Fan (cont'd)
CONDENSER FAN RELAY 4P SOCKET
CONDENSEB FAN 2P CONNECTORWire side of female terminals
-=F_
l!.lI slx
@I
Check tor an opon in the wi.o:1. Disconnect the jumper wire.2. oisconnect the condenser tan2P connector.3. Check for continuity betweenthe No. 1 terminal of the con-denser fan relay 4P socket andthe No. 1 terminal of the con-denser fan 2P connector.
Rapair op6n in the wirs bgtwconthe condcnsor tan rclay and thecondgnlar fan.
ls there continuity?
Check to. en open in the wire:Check for continuity between theNo. 2 terminal ot the condenserfan 2P connector and bodyground.
Check Ior rn opon in th6 wirebctwoen the condcnser tan andbody ground, lf iho wirc ii OK,chcck for poor ground at G751.
ls there continuity?
Replaco the condense. fan motor.
22-10

Frcm page 22-14
Check lor an open in the wire:1. Turn the ignition switch OFF.
2. Disconnect the A/C pressure
switch 2P connector.3. Turn th ignition switch ON lll).4. Measure the voltage between
the No. 1 terminal of the AJCpressure switch 2P conneclorand body ground.
Check the A/C pressure switch:1. Turn the ignition switch OFF.
2. Check for continuity between
the No. 1 and No. 2 terminalsof the Ay'C pressure switch.
ls there continuity?
Check for A/C system ptessure.
ls the pressure within sPeci_f cations?Repair the A/C pressure Problem
A/C PRESSURE SWITCH 2P CONNECTOR
ls there battery voltage?
wire side of {emale terminals
A/C PRESSURE SWITCH
Repair open in the wire between
the condenser fan relay tnd the
A/C oressure switch.
1o page 22-16
(cont'd)
22-15

A/C System
CONDENSER FAN RELAY 4P SOCKET
A/C system does not come on
{comDressor and fan).
Check the No. 56 fuse in theunder'hood fuse/relay box andthe No. 17 fuse in the under-dashfuse/relay box.
ReDlace the fus6{s}, and recheck.
Check for tn open in the wire:
1. Remove the condenser lanrelay from the u nderhood
luse/relay box.2. Turn the ignition switch ON {lli.3- Measure the voltage betweenthe No. 4 terminal of the condenser fan relav 4P socketand body ground.
Repair open in the wire between
the No. 17 fuse and the con-denser fan r6lay,
Check the under-hood fus€/r6laybox:Measure the voltage between the
No. 2 terminal of the condenser
fan relay 4P socket and bodyground,
YES
Io page 22-18
(cont'd)

A/C ThermostatRelays
Test
1.Remove the Ay'C thermostat (see page 22-29).
Connect baftery power to the No. 3 terminal, ground
the No. 2 terminal, and connect a test light between
the No. 1 and No. 3 terminals.
NOTEr Use a 12 V,3 W- l8 W test light.
Dip the IVC thermostat into a cup filled with ice water,
and check the test light.
Serp6ntine-type evaporator
The light should go off at 36 - 39'F {2 - 4"C} or less, and
should come on at 39 - 41"F (4 - 5"C) or more
Laminale-type evaporator
The light should go off at 39 - 43'F (4 - 6'C) or less, and
should come on at 43 - 45"F (6 - 7'C) or more
lf the light doesn't come on and go off as specified,
replace the PVC thermostat.
12V,3W-18W
Test
There should be continuity between the No, 1 and No.2
terminals when power and ground are connected to the
No.3 and No. 4 terminals, and there should be no conti-
nuitv when Dower is disconnected.
2
Condenser fan relay
Compressor clutch relay
a
a
,I Ib
In Io'r I
t\----,'
t:n
,,l[4..-.
22-21

A/C Service Tips and Precautions
The air conditioner system uses HFC-134a (R-134a) refrigerant and polyalkyleneglycol (PAG) refrigerant oil*, which are not
compatible with CFC-12 (R-12) refrigerant and mineral oil. Do not use R-12 refrigerant or mineral oil in this system, and do
not attempt to use R-12 servicing equipmenU damage to the air conditioner system or your servicing equipment will result.*Sanden SP-10:
. P/N 38897 - P13 - A0lAH: 120 ml 14ll.oz, 4.2lmp.oz)
. P/N 38899 - P13 - A0l | 40 mf 11 1/3ll.oz,1.4 lmp'oz)
Use only service equipment that is U.L. listed and is certified to meet the requirements of SAE J2210 to remove R 134a
from the air conditioner system.
CAUTION: Exposure to air conditioner ref;ige;ant and lubricant vapol or mist can irritate syes, nose and throat, Avoid
breathing the air conditioner refrigerant and lubricant vapor or misl.
lf accidental system discharge occurs, ventilate work area before resuming service.
R-'134a service equipment or vehicle air conditioner systems should not be pressure tested or leak tested with compressed
ai.
!@@ some mixtures of air and R-t3ila have been shown to be combustible at elevated pressures and can result
in tire or explosion causing iniury or property damage. Never use compressed air lo pressure tesl R-134a service equip-
ment or vehicle 8ir conditioner systoms.
Additional health and safety information may be obtained from the refrigerant and Iubricant manufacturers.
L Always disconnect the negative cable from the battery whenever replacing air conditioning pans.
2. Keep moisture and dust out of the system. When disconnecting any lines, plug or cap the fittings immediately; don't
remove the caps or plugs until just before you reconnect each line.
3. Before connecting any hose or line, apply a few drops of refrigerant oilto the O-ring.
4, When tightening o. loosening a fitting, use a second wrench to support the matching fitting.
5. When discharging the system, use a R-134a refrigerant recovery/recycling/charging station; don't release refrigerant
into the atmosphere,
6. Add refrigerant oil after replacing the following parts:
NOTE:
. To avoid contamination, do not return the oil to the container once dispensed, and never mix it with other refriger-
ant oils.
. lmmediately after using the oil, replace the cap on the container, and seal it to avoid moisture absorption.
. Do not spill the refrigerant oil on the vehicle; it may damage the paint; if the refrigerant oil contacts the paint, wash
it off immediately.
Condenser .......2o ml (2/3 fl.oz, 0.7 lmp.ozl
Evaporator .,.,.,. i[5 m{ 11 213 tl.oz,1,6lmp.ozl
Line or hose ..... 10 mf (1/3 fl.oz, 0.4 lmp.ozl
Receiver/Dryer 10 m{ (1/3 fl.oz,0.'l lmp.ozl
Leakage repair 25 m{ (5/6 fl.oz, 0.9 lmp.ozl
Comptessor ... For compressor replacement. subtract the volume of oil drained trom the
removed compressor from A, and drain the calculated volume of oilfrom the new
compressor: A - Volume of removed compressor: Volume to drain from new
comoressor.
A: SANDEN 130 mf l/t 113 ll.oz, 4.6 lmp'ozl; DENSO 140 mf {4 213 ll'oz, 1.9
lmp.oz),
NOTE: Even if no oil is drained from the removed compressor, don't drain more
than S0 m{ 112Ell.oz,1.8 lmp.oz) fromthe new compressor.
REMOVED NEW
COMPRESSORCOMPRESSOR
*DENSO ND-OlL 8l
. P/N 38897 - PR7 - A01AH: 120 ml (4 fl.oz)
. P/N 38899 PR7-A01:40mf (1 1/3fl'oz)
rereW W0000
22-22
-0_!- -0_a
Tol l00l
| | lffi 1 onrrrutrc I
fi+-sAME
LEvEr...+jEf,voLUME
J
^

A/C System Torque Specifications
O Discharge hose to the compressor (6 x 1.0 mml ............... .. .... ...............' 9.8 N'm {1.0 kgf'm,7.2 lbf'ftl
@ Discharge hose to the condenser {6 x 1.0 mm1................... '... ...... . ......... 9.8 N'm 11.0 kgf'm, 7.2 lbf'ft}
O Condenser pipe to the condenser 16 x 1,0 mm)...............'. . . . ...........'..... 9.8 N'm (1.0 kgl'm, 7.2 lbt'ft)
@ Condensel pipe to the receivel/dryer (5 x 1.0 mml......... ..... . ... . '.......... 9.8 N'm (1.0 kgl'm, 7.2 lbt'ft)
O Receiver pipe A to the leceiver/dryer {6 x 1.0 mm)......... ... .......... .. . . .... 9.8 N'm 11.0 kgf'm. 7.2 lbl'ft)
@ Receiver pipe B to the receiver pipe A 13 N m (1.3 kgf'm, 9.'l lbf'ft)
O Receiver pipe C to the receiver pipe B 13 N m (1.3 kgf'm, 9.4 lbnftl
@ Receiver pipe C to the evaporator {6 x 1.0 mm) ....... 9.8 N'm (1.0 kgf'm, 7.2 lbtftl
O Suction pipe B to the evaporator (6 x 1.0 mml................ . .........'......'....... 9.8 N'm (1.0 kgf m, 7.2 lbf'ftl
e0 Suction pipe A to the suction pipe B ...'. . ...... . ... ...... 31 N'm (3.2 kgt'm, 23 lbf'ftl
O Suction hose to the suction pipe A... ............ . . '......... 31 N'm (3.2 kgl'm, 23 lbf'ft|
@ Suction hose to the compressor (6 x 1.0 mm)................... .. . ... .. ............ 9.8 N'm (1.0 kgf'm' 7.2 lbf'ft|
@@ Compressor to the compressor bracket (8 x 1.25 mm)... ..-........'.'......-.......24 N'm (2 'l kgf'm, 17 lbf ftl
@ Compressor bracket to the cytinder block (10 x 1.25 mml 44 N'm l'1.5 kgf'm, 33 lbf ftl
@ Compressor bracket to the left front engine mounl {12 x 1.25 mm}..... . . . . .. ................. ... ... 59 N'm (6.0 kgf'm, '|i} lbf ftl
22-23

A/C System Service
Pressure Test Chart
NOTE: Performance Test is on page 22-24,
Test resultsRelated symptomsProbabl€ causeRemedy
Discharge (high)
pressure aDnor-
mally high
After stopping compressor. pres-
sure drops to about 200 kPa
{2.0 kgflcm,,28 psi) quickly, and
then falls gradually.
Air in systemRecover, evacuate, and
recharge with specified amount.
Evacuation: see page 22-45
Charging: see page 22-46
Reduced or no air flow through
condenser
. Clogged condenser fins. Condenser fan not work-
ing properly
Clean.
Check voltage and fan rpm.
Check fan direction.
Line to condenser is excessively
hot.
Restricted flow of refriger-
ant in system
Restricted lines
Discharge pres-
sure abnormally
High and low pressures are bal-
anced soon after stopping compres-
sor, Low side is higher than normal.
. Faulty compressor dis-
charge valve. Faulty compressor seal
Replace the compressor.
Outlet of expansion valve is not
frosted, low pressure gauge indi-
cales vacuum.
. Faulty expansion valve. Moisture in system
. Replace,. Recover, evacuate, and
recharge with specified
amount.
Suction (low)
pressure abnor-
mally low
Expansion valve is not frosted, and
low oressure line is not cold. Low
pressure gauge indicates vacuum.
. Frozen expansion valve. Faulty expansion valve
ReDlace the exoansion valve.
Discharge temperature is low. and
the air flow from vents is restricted.
Frozen evaporatorRun the fan with compressor
off. then check A,/C thermostat.
Exoansion valve is frosted.Clogged expansion valveClean or replace.
Receiver/dryer outlet is cool, and
inlet is warm (should be warm
during operation).
Clogged receiver/dryerReplace.
Suction pres-
sure abnormally
hig h
Low pressure hose and check
joint are cooler than the tempera-
ture around evaporator.
. Expansion valve open too
long. Loose expansion capillary
tube
Repair or replace.
Suction oressure is lowered when
condenser is cooled bv water.
Excessive refrigerant in sys-
tem
Recover. evacuate, and
recharge with specified amount.
High and low pressure are equal-
ized as soon as the compressor is
stopped, and both gauges fluctu-
ate while running.
Faulty gasket
Faulty high pressure valve
Foreign particle stuck in
high pressure valve
Replace the compressor.
Suction and dis-
charge pres-
sures abnormally
h igh
Reduced air flow through con-
denser.
. Clogged condenser fins. Condenser fan not work-
ing properly
Clean condenser.
Check voltage and fan rpm.
Check fan direction.
Suction and dis-
charge pressure
abnormally low
Low pressure hose and metal end
areas are cooler than evaporator.
Clogged or kinked low pres-
sure hose parts
Repair or replace.
Temperature around expansion
valve is too low compared with
that around receiver/dryer.
Clogged high pressure lineRepair or replace.
Refrigerant leaksCompressor clutch is diny,Compressor shaft seal leakingReplace the compressor.
Compressor bolt{s) are diny.Leaking around bolt(s)Tighten bolt(s) or replace com-
pressor.
Compressor gasket is wet with oil.Gasket leakingReplace the compressor.
22-26

Compressor (SANDENI
Replacement
1.lf the compressor is marginally operable, run the
engine at idle speed, and let the air conditioner
work for a few minutes. then shut the engine off.
Disconnect the negative cable from the battery.
Recover the refrigerant with a recovery/recycling/
charging station (see page 22-27l..
Remove the bolts, then disconnect the suction and
discharge lines from the compressor.
NOTE: Plug or cap the lines immediately after dis-
connecting them to avoid moisture and dust con-
tamination.
6xl.0mm
Remove the condenser (see page 22-44).
NOTE: Do not disconnect the discharge hose from
the condenser.
Remove the power steering pump belt (see section
17 t.
22-30
24 N.m l2.ia kgt.m, 17 lbf.ftl
7. Loosen the center nut of the idler pulley and the
adjusting bolt. then remove the A,/C compressor belt
from the pulleys. Remove the two mounting bolts
from the left front mount, then remove the ly'C com-pressor belt by passing it through the gap befiiveen
the bodv and the left front mount.
ADJUSTING BOLT
1.0 x 1.25 mmaa N.m 14.5 kgf,m, 33 bnft)
8. Remove the four mounting bolts and the compressor.
CENTER NUT
COMPRESSOR