1999 HONDA CR-V Charging system

A/C System Service
Pressure Test Chart
NOTE: Performance Test is on page 22-56.
Test resultsRelatad symptomsPrcbable caus€Remody
Discharge (high)pressure 6bnormallyhagh
After stopping compressor, pressuredrops to about 200 kPa 12.0 kgtlcm,,28 psi) quickly, and then lalls gradualty.
Air in systemDischarge, evacuate, and rechargewith specified amount.Evacuation: see page 22-60Charging: see page 22-61No bubbles in sight glass whencondenser is cooled by waterExcessive refrigerant in systemDischarge, evacuate, and rechargewith specilied amount.Reduced or no air flow throughcondenser. Clogged condenser or radia-tor fins. Condenser or radiator fannot wo.king properly
CleanCheck voltage and fan rpm.Check fan direction.
Line to condensor is excossivelv hot.Restricted flow of relrigerant insy$emFestricted lines
Discharge pressureabnormally lowExcessive bubbles in sight glass;condenser is not hot.Insufficient retrigerant inCheck for leak.Charge system.High and low pressures are balancedsoon after stopping compressor. Lowside is higher than normal.
. Faulty compressor discharge
. Faulty compressor seal
Replace the comprossor.
Outlet ot expansion valve is notfrosted, low-pressure gauge indicates
' Faulty expansion valve. Moisture in system. Replace. Discharge, evacuate, andrecharge with specified amount.Suction {low) pros,sure abnormallyExcessive bubbles in sight glass;condenser is not hot.Insufficiont relrigerant inRepair the leaks.Discharge, evacuate, andrecharge with specified amount.Charge as r€quired.Expansion valve is not frosted, andlow-pressure line is not cold. Low-pressure gauge indicates vacuum.
' Frozen expansion valvelMoisture in system). Faulty expansion valve
. Discharge, evacuate, andrecharge with specitied amount.. Replace th€ expansion valve.Discharge temperature is low, and theair llow trom vents is restricted.Frozen evaporatorRun the fan with compressor off,then check evaporator tempera,ture sensor.Expansion valve is frosted.Clogged expansion valveClean or replace.Feceiver/dryer outlet is cool, and inlotrs w6rm (should be warm duringoperation).
Clogged receiver/dryerReplace
Suction pressureabnormally highLow-pressure hose and check joint arecooler than tho temperature aroundevaporator.
. Expansion valve open too long. Loose expansion capillarytube
Repair or roplace.
Suction pressure is lowored whencondenser is cooled by water.Excessive refrigerant in systemDischarge, evacuate, and rechargewath specified amount.High and low-pressure are equalizedas soon as tho compressor is stopped,and both gauges tluctuate whilerunning.
Faulty gasketFaulty high-pressure valveForeign panicle stuck in high-
Replace the compressor.
Slction and dis,charge pressutesabnormally high
Reduced air flow through condens€r,. Clogged condenser orradiator tins. Condenser or radiator fannot working properly
CleanCheck voltage and fan rpm.Check Ian direction.
No bubbles in sight glass whencondenser is cooled by walerExcessive refrigerant jn systemDischarge, evacuate, and rechargewith specified amount.Suction and dis-charge pressureabnormally low
Low-pressure hose and motalendareas are cooterlhan evaporator.Clogged or kinked low-pressure hose pansRepair or replace.
Temperature around expansion valvers too low compared with that aroundClogged high-pressure lineRepair or replace.
Refrigerant leaksCompressor clutch is diny.Compressor shaft seal leakingReplace the compressor.Compressor boltls) are dirty.Leaking around bolt(s)Tighton bolt{s) or replacecompressor.Compressor gasket is wet with oil.Gasket leakingReplace the compressor,
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Recovery
Use only service equipment that is U.L.-listed and is cer-
tified to meet the requirements of SAE J2210 to remove
HFC-134a (R-134a) from the air conditioner system.
CAUTION: Exposure to air conditioner refrigerant and
lubricant vapor or mist can irritate eyes, nose and
throat. Avoid brqathing the air conditioner retrigerant
and lubricant vapor or mist.
lf accidental system discharge occurs, ventilate work area
before resuming service.
R-134a service equipment or vehicle air conditioner sys-
tems should not be pressure tested or leak tested with
compressed arr.
@@ some mixtures of air and R-134a have been
shown to be combustible at elevated plessures and can
result in fire or explosion causing iniury or property dam-
age. Never use compressed air to pressure tect R-134a
service equipment or vehicle air conditioner systems.
Additional health and safety intormation may be obtained
from the refrigerant and lubricant manufacturers.
'1. Connect a R-134a refrigerant recove rylrecycling/
charging station to the vehicle, as shown, following
the equipment manufacturer's instructions
2. Measure the amount of refrigerant oil removed trom
the A,/C system after the recovery process is com-
oleted. Be sure to install the same amount of new
refrigerant oil back into the AVC system before charg-
inq.
Recovery/Recycling/Charging Station
22-59
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A/C System Service
Evacuation
Use only service equipment that is U.L.-listed and is cer-tified to meet the requirements of SAE J2210 to removeHFC-134a {R-134a)from the air conditioner system.
CAUTION: Exposure to air conditioner refrigerant andlubricant vapor or mist can irrhate eyes, noso and throat.Avoid breathing the air condhioner retrigerant and lubri-cant vapor or mist.
lf accidental system discharge occu.s. ventilate workarea before resuming service.
R 134a service equipment or vehicle air conditioner sys-tems should not be pressure tested or leak tested withcompressed arr.
!@ some mixtures of air and R-134a hsvo beenshown to be combustible at elevated pressures and canresult in tire or explosion causing iniury ot property
damage. Never use compressed air to pressure test R-134a service equipment or vehicle air conditioner svs-tems.
Additional health and safety information may be obtainedfrom the refrigerant and lubricant manufacturers.
1, When an A,/C System has been opened to the atmo-
sphere, such as during installation or repair, it must
be evacuated using a R-l34a refrigerant recovery/
recycling/charging station. {lf the system has beenopen for several days, the receiver/dryer should bereplaced, and the system should be evacuated forseveral hours.)
Connect a R-134a refrigerant recovery/recyclin g/
charging station to the vehicle, as shown, following
the equipment manufacturer's instructions.
Evacuate the system,
lf the low-pressure does not reach more than 93.3kPa (700 mmHg,27.6 in.Hg) in 15 minutes, there isprobably a leak in the system. partially charge thesystem, and check for leaks (see Leak Test).
Recovery/Recycling/Charging Station
22-60
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Charging
Use only service equipment that is U.L.-listed and is cer-
tified to meet the requirements of SAE J2210 to remove
HFC-134a (R-134a) from the air conditioner system.
CAUTION: Exposure to air conditioner refrigerant and
lubricant vapor or mist can irritate eyes, nose and
throat. Avoid breathing th€ air conditioner refrigerant
and lubricant vapor or mist.
lf accidental system discharge occurs, ventilate work
area before resuming service. Additional health and
safety information may be obtained from the relrigerant
and lubricant manufacturers.
Connect a R-'134a refrigerant recovery/recycling/charging
station to the vehicle, as shown. following the equipment
manufacturer's instructions.
R€covery/Recycling/Charging Station
HIGH-PRESSURESIDE
Add the same amount of new refrigerant oil to system
that was removed during recovery. Use only SP-'10
refrigerant oil.
Charge the system with Required amount of R-134a
refrigerant. Do not overcharge the system; the compres-
sor will be damaged.
Select the appropriate unit of measure for your
charging station.
Refrigerant capacity: 700 to 750 g
0.70 to 0.?5 k9
1.5 to 1.6 lbs.
21.7 to 26.5 oz.
ll-
22-61
Leak Test
Use only service equipment that is U.L.-listed and is cer-
tified to meet the requirements of SAE J2210 to remove
HFC-134a (R-134a) from the air conditioner system.
CAUTION: Exposure to air conditionor refrigerant and
lubricant vapor or mist can irritate eyes, nose and throat.
Avoid breathing the air conditioner retrigerant and lubri-
cant vapor or mist.
lf accidental system discharge occurs, ventilate work
area before resuming service.
R-134a service equipment or vehicle ajr conditioner sys-
tems should not be pressure tested or leak tested with
compressed arr.
!@ some mixturos of air and R-1348 have
been shown to be combustible at olovatod pres3uras
and can result in fire or explosion causing iniury or
property damage. Never use comprelised air to pressure
test R-13ila service equipment or vehicle air conditioner
systems.
Additional health and safety information may be obtained
from the refrigerant and lubricant manufacturers.
2.
1.Connect a R-134a refrigerant recove rylrecycling/
charging station to the vehicle, as shown in the pre-
vious column, following the equipment manufactur-
er's instructions.
Open the high-pressure valve to charge the system
to the specified capacity, then close the supply
valve, and remove the charging system couplers.
Select the appropriate unit of measure for your
charging station.
Refrigerant capacity: 700 to 750 g
0.70 to 0.75 kg
1.5 to 1.6 lbs.
21.7 to 26.5 oz.
Check the system for leaks using a R-134a refriger-
ant leak detector with an accuracy of 14 g (0.5 ozl
per year or better.
lf you find leaks that require the system to be opened
(to repair or replace hoses, fittings, etc.), recover the
system according to the Recovery Procedure on page
22-59.
After checking and repairing leaks, the system must
be evacuated (see System Evacuation on page 22-601.
5.
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Compressor
Thermal Protector Replacement
1. Remove the bolt, the ground terminal and the hold-
er. Disconnect the field coil connector. then remove
the thermal Drotector.
7.4 N.m (0.75 kgrf.m,5lbf ftl
GROUNDTERMINAL
ReDlace the thermal protector with a new one, and
apply silicone sealant to the bottom of the thermal
orotector,
3. lnstall in the reverse order of removal.
SILICONE SEALANT
22-68
Relief Valve Replacement
l.Recover the refrigerant with a Recovery/Recycling/
Charging System (see page 22-59).
Remove the relief valve cover ('97 model), the relief
valve and the O-ring. Plug the opening to keep for-
eign matter from entering the system and the com-
pressor oil from running out.
O.RINGReplace.
RELIEFVALVE9.8 N.m {1.0 hgf.m,7.2 rbr.ftl
Put the cover on the relief valve so that the arrow
directs downwards as shown in the illustration
above ('97 model).
Clean the mating surfaces.
Replace the O-ring with a new one at the relief valve,
and apply a thin coat of refrigerant oil before
installing it.
Remove the plug. and install and tighten the relief
valve.
7. Charge the system (see page 22-61), and test its
performance (see page 22-561r.
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Gondenser
't.
Replacement
Recover the refrigerant with a recovery/recycling/
charging ststion (see page 22-59)
Remove the front grille (see section 20).
Remove the coolant reservoii, but do not discon-
nect the reservoir hose Jrom the coolant reservoir
and the radiator.
Remove the bolts and the suction line bracket as
shown. Remove the bolts and the upper mount
brsckets from the radiator.
UPPER MOUNTBRACKETS
Remove each bolt, then disconnect the discharge
and condenser lines from the condenser, Plug or
cap the lines immediately after disconnecting them
to avoid moisture and dust contamination.
6x1.0mm9.8 N.m 11,0 kgf.m, 7.2 lbfttl
t\,l/
ait- -:
i..
6x1.0mm
6xl.0mm9,8 N.m 11.0 kgf'm' 7.2lbf'ft)
22-70
DISCHARGE LINE
CONDENS€R LINE
6. Remove the mounting bolts, then remove the con-
denser by lifting it up as shown. Be careful not to
damage the radiator and condenser fins when
removing the condenser.
Install in the reverse order of removal. Make note of
the following items.
. lf you're installing a new condenser, add refriger-
ant oil (sP-10) (see page 22-54]..
o Replace the O-rings with new ones at each fit-
ting, and apply a thin coat of refrigerant oil
before installing them. Be sure to use the right
O-rings for HFC-134a (R-134a) to avoid leakage.
. Be careful not to damage the radiator and con-
denser fins when installing the condenser.
. Be sure to install the lower mount cushions of
condenser securely into the holes,
. Charge the system (see page 22-61), and test its
performance (see page 22-56).
7.
1,0 mm
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Body Electrical
Speciaf Toofs ,...,..,.............-.23-2
Troubleshooting
Tips and Precautions ......,.,..........,.................. 23-3
Five-step Troubleshooting ........,.,.,...,,.,......... 23-5
Wire Color Codes ...,....,.. 23-5
Relay and Control Unit Locations
Engine Compartment ..,.,......,......................... 23-6
Dashboard ,.,.,..............-.- 23-7
Door ....................... .........23-10
Index to Cilcuits and Sysiems
Accessory Socket .. ,....,.,..,.,. 23-95*Airbags ................ .,....,. Sestion 24
Air Conditioning ,.,.,.... Section 22
Alternator ................... Section 4
Anti-lock Brake System {ABSI ................... Section 19'A/T Gear Position Indicator ....................... Section 1,1
Automatic Transmission System ...........,.. Section 14
Battery ................... ..............23-50
Blower Controls .,...,.,, Section 22
Charging System ....... Seqtion il
Clock -'98 Model ................ 23-98
Connector ldentification and Wire HarnessRouting .................. ......... 23.11
Cruise Control ............ Ssction 4
Dash Lights Brightness Contlo||er ..................... 23-90
Fan Conlrols ...,......,.... Section 10
Fuel Pump ,..,.,...,....,.... Section 11
Fuses...................... .,,.,.,.,.,,.,23-40*Gauges
Circuit Diagram ......-....-..23-58
Fuel Gauge .....,.,..... Section 11
Speedometer ..,..........,... 23-56
Ground Distribution ,....,.,...23-46
Hatch Glsss ODenor .........................,.,.,.,.,..,.,.,.,,. 23-121
Heater Controls .-........ Soction 21*Horns.,...,..,.,.,....... ................23"104*fgnition Switch ,,.,.,..,.,.,,.,.,.,23-51
lgnition Key Light System -'97 Mod6l .............. 23.88
-+
BODY
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Power Distribution
Fuse
1
3
5
6
7
I
9
10
11
12
13
14
"^
RED/B LU
RED/GRN
WHT/BLK
RED/VVHT
YEUBLK
RED
GRN/BLK
BLU/BLK
YEVBLK
YEUGRN
RED
BLK/YE L
BLK/VVHT
17
7.5 A
7.5 A
BLVBLU
BLKA/EL
18
19
20
22
7.54
7.54
l0 A
10 A
YEUBLK
YEVRED
BLKAr'YHT
RED /VHT
RED/YE L
Fuse-to-Component(sl Index (numerical sequencel (cont'dl
Under-dash Fuse/Relay Box:
Capacity
10 A
10 A
10 A
10 A
20A
204
15A
204
204
7.5 A'15 A
7.5 A
7.5 A
Wire ColorCircuit{s) Protected
Not used
Not used
Rear window washer motor (via switch)
Rear window wiper control unit ('97 model)
Rear window wiper motor
Daytime running rights resister {Canada)
Right headlight {High beam}
Daytime running rights resister (Canada)
High beam indjcator light
Left headlight (High beam)
Rear accessory socket (via relay)
Left rear power window motor (via switch)
Right rear power window motor (via switch)
Distributor (ignition control module)
Front passenger's power window motor (via switch)
Driver's power window motor {via switch)
Power window master switch (power window control unit)
Turn signal/hazard relay (via switch)
PGM-FI main relay
SRS unit (VA)
Cruise control unit (via switch)
Cruise main switch indicator light
Alternator
Charging system light
ELD unit (USA)
EVAP bypass solenoid valve ('98 - 00 models)
EVAP control canister vent shut valve ('98 - 00 models)
EVAP purge control solenoid valve
Primary HO2S
Secondary H02S
VSS
ABS control unit
Option connector (lG2)
Ay'C compressor clutch relay
Blower motor high relay
Blower motor relay
Condenser fan relay
Heater control panel
Left power mirror actuators (via switch)
Mode control motor
Radiator fan relay
Recirculation control motor
Right power mirror actuators (via switch)
Daytime running lights control unit (Canada)
Back-up lights
Reverse relay (A"/T)
Daytime running lights control unit (Canada)
Right headlight (Low beam)
Left headlight (Low beam)
23-44
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