2000 HONDA CR-V Cat

From page 22-22
Chgck for a short to power:
Check th6 same wires lor voltage.
Ropair lhort to powor in the wiiobetw6an tho mode comrol motorend thc hoat.r cont.ol pan.l.(This damagF tha h€ator Gontrolpancl.l
Chack for an opon in tha wiles:Check lor continuity between thefollowing terminals oI the mode
control motor 7P connector andthe heater control panol 20P con-nector.20Pt 7P.No. 12 - No. 3No. '13 - No. 4No. 14- No.5No. 15 - No. 6No. t6 - No. 2No. 19 - No. 7
R.pair any opon in tho wilols)betwaen th6 modg cortrol motorand th. heatar control p.nsl.
Chock fo. loose wiret or pool
connections at the heat6r controlpancl 20P connector and tt themodo control motor 7P connoc-tor. lf tho connactions sre good,
substitute a known-good hortcrcontrol pan6l, and tech.ck. lf thesymptom/indication goes awaytroplaco tho original hcater @nttolp3nel.
HEATER CONTROL PANEL 2OP CONNECTOR
12'VVLgl8910
't112rslrrlrslre17181920
8LU/BLX
:L/BLUBRN/WHT
BRN/WHT
BRN/WHT
Wire side ot female terminals
MODE CONTROI- MOTOR 7P CONNECTORWire side ol temale terminals
2,/1,/l/II10
111213t14t151511181920
BLU/BL
GRi
YEL/
Kt I I|/YEL I IIYEL/REDI
t-BLUI q
;f;T;T;
YEL/BLU
YEL
BLU/BLK
GRN/ItEL
YI:L/FED
22-23
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Ftom page 22-24
Check tol a short in the wit6:1. Remove the heater controlpanel {see page 22-46)2. Check for continuity betweenthe No.2 and No.3terminals of
the heater controlpanel8P connector and body ground indi-vidually.
Reoaii short in tfte wir€{s) b€irv€€nthe redrc{lstion conttol motor and
ihe hedter control panel.
Check for a shon to power:
Check the same wires lor voltage.
Repair short to power in the wite
between the rocirculation controlmotor and lh€ heator controlpanel. (This demsges the heater
conlrol panel.l
ls there any voltage?
Ch€ck tor an open in the wires:Check for continuity between thefollowing terminals ol the recircu'lation control motor 4P connectorand the heater control panel 8P
8P: 4P:No.2 - No.4No.3- No.2
Ropair open in the wile(sl betweenthe recirculalion control motorand the heeter cortrol Pan€|.
Check for loose wires or pool
connections at the heat€r control
Danel 8P connoctor and .t therocirculation control motor 4Pconnector. lf lhe connec{ions aregood, substitule a known-goodhester control oanel, and rochock.lI the symptom/indication goes
away, .eplace the otiginal heater
control pan€|.
HEATER CONTROL PANEL 8P CONNECTOR
Wire side of female terminals
GRN/REO---1 T'lF Iir l516 I
213
;T;
1ffiIVI4I
GRN/WHT
RECIRCULATION CONTROL MOTOR,lP CONNECTORwire side ot female terminals
22-25
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Troubleshooting
A/G System {cont'd)
From page 22-37
A/C PRESSURE SWITCHCheck th€ A/C pressure switch:1. Turn the ignition switch OFF.2. Check lor continuity bgtweenthe No. 1 and No.2 terminalsofthe A,/C pressure switch.
Check for proper Ay'C system pressure.
Roplece tha A/C pr€ssure switch.
Chock lor an opgn in thg wire:1. Feconnect the A/C pressure
switch 2P connector,2. Remove the heater controlpanel (see page 22-46).3. Turn the ignition switch ON llli.4. Measure the voltage betweenthe No. 10 terminal of theheater control panel 20P con-nector and body ground.
Repair open in the wir. botwcenthe A/C pres3ur€ switch and theheater control oanel.ls there approx. 5 volts?
Check lor loos6 wiras or pool
connections at the heater controlDanel 20P connoctor and at theA/C pr.ssule switch 2P connsc-tor. lf the connections ere good,
substitute a known-good heatarco trol pangl, end recheck. lf thesymptom/indication goes away,replace the original heater conlrolpanel.
HEATER CONTROL PANEL 2OP CONNECTOR
Wire side ol female terminals
22-38'
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Evaporator Temperature
SensorPower Transistor
Test
Dip the sensor in ice water, and measure the resistance
with a digital multimeter. Then pour hot water on the
sensor, and check lor change in resistance.
Compare the resistance reading between the No. | 8nd
No. 2 terminals of the evaporator temperature sensor
with the specifications shown in the following graph;
resistance should be within the specifications.
EVAPOBATOR TEMPERATURE SENSOB
Terminal side ol male terminals
4
RESISTANCEko
t0
50 68 86.F10 20 30'c
22-44
12V 1.2-3.1W
No. 2 ILT GRN/BLK)
No. I IBLU/BLK)
Test
1.Disconnect the 3P connector from the oower tran-
st$or.
Carefully release the lock tab on the No. 2 terminal in
the 3P connector, then remove the terminal and insu-
late it from body ground.
Connect a 1.2 - 3.4 W bulb between the No, 1 and
the No,2 cavity on the 3P connectol
Reconnect the 3P connector to the power transistor.
Turn the ignition switch ON (ll). and check that the
blower motor runs.
a lf the blower motor runs at half soeed the oower
transistor is OK, replace the heater control panel.
. lf ths blower motor does not run at half soeed,
reDlaca the Dower transistor.
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}-Overhaul
1. Remove the filter lid. then pull out the A/C filter
assembly.
Pull out the evaporator temperature sensor from
the evaporator fins.
Remove the self-tapping screws and the clamps
from the housings.
Carefully separate the housings, then remove the
evaporator.
lf necessary, remove the expansion valve When
loosening the nuts of the expansion valve, use a sec-
ond wrench to hold the expansion valve or the evapo-
rator line. Otherwise, they can be damaged.
6. Reassemble the evaporator in the reverse order of
disassembly. Make note of these items.
. Replace the O-rings with new ones at each fitting,
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.
. Install the expansion valve capillary tube with
the capillary tube in contact with the outlet line
directly, and wrap it with electricaltape.
. Reinstall the evaporator temperature sensor to
its original location.
. Make sure that there is no air leakage.
ELECTRICAL TAPEReplace.Make sure there is no foreign matter stuck between
the capillary tube and outlet line.
CAPILLARY TUAE
EXPANSION VALVE
4.
TEMPERATURESENSORlest, page 22-41
,m
\!{
YFILTER LID
;
I-OWER HOUSINGA/C FILTER ASSEMBLY
22-49
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A/C FilterHeater Unit
Replacement
1.Remove the glove box (see section 20).
Remove the glove box frame {see page 22-4A).
Release the wire harness from the clamps on the
evaporator. Remove the filter lid, then pull out the
,VC filter assembly from the evaporator housing.
A/C FILTER ASSEMELY
Remove the A/C filter from the filter housing.
Replace the Ay'C filter according to the maintenance
schedule in the owner's manual.
Install in the reverse order of removal. Make sure
that there is no air leakage.
22-50
Replacement
SRS components are located in this area. Review the
SRS component locations, precautions, and procedures
in the SRS section {24) before performing repairs or ser-
1. Disconnect the negative cable from the battery.
2. From under the hood, open the cable clamp, then dis-
connect the heater valve cable from the heater valve
arm. Turn the heater valve arm to the fullv ooened
oosition as shown.
When the engine is cool, drain the engine coolant
from the radiator (see section 10).
@ Do not remove the rldiator cap when
the engine is hot; the engine coolant is under pres-
sure and could sevo.ely scald you.
HEATER VALVE ARM
HEATER VALVE CABLE
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A/C System Torque Specifications
EVAPORATOR
SUCTION LINE
SUCTION HOSE
RECEIVER LINE ARECEIVEN LINE B
RECEIVER/ORYER
O Discharge hos€ to the compressor {6 x 1.0 mml.... 9.8 N.m 11.0 kgrf.m.7.2lbtftl
@ Condenser line to the condenser (6 x 1.0 mm)
@ Condensor line to the receiver/dryer {6 x 1.0 mm) ........9.8 N.m {1.0 kgf.m, 7.2 lbt.ft)
O Receiver line A to the receivor/dryer (6 x 1.0 mm) ...... ....................... 9.8 N.m {1.0 kgf.m.7.2 lbf.ft}
@ Receiver line B to th€ receive. line A
O R€ceiver tine C to the receivor line B
@ Recoiver line C to the evaporator (6 x 1'0 mml9.8 N'm (1.0 kgf.m,7.2lbtftl
O Sustion line to the evaporatot 16 x 1.0 mml
@ Sustion line to the suction hose...... 31 N.m (3.2 kgl.m, 23 lbf.ft)
@ Sucion hose to the qompressor (6 x 1.0 mm) .....'...' 9 8 N'm (1 0 kgt'm, 7'2 lbf'ftI
@ Compressor to the compressor bracket {8 x 1.25 mm) ... 24 N.m l2.il kgf'm, 17 lbf'ft}
@ Compressor bracket to the cylindsr block (10 x 1.25 mm) ................ ......... il,t N'm (4.5 kgt'm, 33 lbf'ft)
@ ldler pulley bracket to the compressor bracket (10 x 1.25 mm)..................... ,14 N.m (/r.5 kgf'm, 33 lbf'ft)
@ Lock nut of the sdiusting boh to the compressor bracket ......................... 24 N'm (2./t kgt'm, 17 lbf'ft)
@|d|erpu||eytotheid|orpu||eybracket.....'..........................'....\
.'.....'........'....44N.m(4.5kg''m'33|bf.f)
@ compressor bracket to the left front mount (12 x 1.25 mml ................... ............................ 59 N'm (6.0 kgt'm, /l:| lbf'ft1
22-55
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A/G System Service
Performance Test
The performance test will helD determine if the air con-
ditioner system is operating within specifications.
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 svstem.
CAUTION: Exposure to air condiiioner r€trigerant and
lubricant vapor or mist can irritate €yes, nose and
throat. Avoid bre8thing the air conditioner retrige.ant
and lubricant vapor or mist,
lf accidental system discharge occurs. ventilate work
area before resuming service.
R-134a service equipment o. vehicle air conditioner sys-
tems should not be pressure tested or leak tested with
comDressed air.
@ some mixtur€s ol air and R-134a have becn
shown to be combuslible at olsvated pressures and can
result in lire or explosion causing iniury or property
damage. Never use compressed air to prgssure test R-
13i[a service equipment or vehicle air conditioner sys.
tems.
Additional health and safety information may be obtained
from the refrigerant and lubricant manufacturers.
Recovory/Recycling/charging station
LOW.PRESSURESIDE
1.Connect a R-134a refrigerant recover/recycling/
charging station to the vehicle, as shown. following
the equipment manufacturer's instructions,
Insen a thermometer in the center air vent. Determine
the relative humidity and air temperature.
Test conditions:
. Avoid direct sunlight.
o Open hood.
. open front doors.
. Set the temperature control dial on MAX COOL,
the mode control dial on VENT and the reci.cula-
tion control switch on RECIRCULATE.
. Turn the A,/C switch on and the fan switch on
MAX.
. Run the engine at 1,500 rpm.
. No driver or passengers in vehicle
After running the air conditioning for 10 minutes
under the above test conditions, read the deliverv
temperature from the thermometer in the dash vent
and the high and low system pressure from the Ay'Cgauges.
2.
22-56
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