page 1 HONDA CR-V 1998 RD1-RD3 / 1.G Workshop Manual

Troubleshooting
To page 22-35
Check the No. 56 (20 A) fuse in theunder hood fuse/relay box, and theNo. 17 (7.5 A) fuse in the underdash luso/rglay box.
Replace the fuso(sl, and r6check.
Remove the compressor clutchrelay, and test it (see page 22 45).
Check the under-hood fuse/relayDOX:Measure the voltage between theNo. 2 terminal of the compressorclutch relay 4P socket and bodyground,
Chack lhe complessor clutch:Connect the No. 1 and No. 2 termi-nals ofthe comoressor clutch relav4P socket with a jumper wire.
Does the comprossor clutch click?
22-34
To page 22-36
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COMPRESSOR CLUTCH RELAYilP SOCKET
COMPRESSOR CLUYCH lP CONNECTORWire side of lemale terminals
-_-l RED
tr-=--l II
I.TT
@
I
$"f Ii 1 __---.1
1___J.RED
I
I
+
Ftom page 22-34
Check for an open in the wire:1. Disconnect the jumper wire.2. Disconnect the compressorclutch 1P connoctor.3. Check for continuity betweenthe No. 1 terminal of the com-pressor clutch relay 4P socketand the terminal ol the com-pressor clutch 1P connector.
Repair open in the wire betweenthe comp.e3sor clutch relay andthe comprsssor clutch.
Inspect tha compreslor clutchclearanco, the thormal protector,
and ths comDrg$or clutch tioldcoil lsee page 22-65).
I
I
.l-(cont'd)
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Troubleshooting
Compressor (cont'dl
COMPRESSOR CLUTCH RELAY4P SOCKET
1
2
43
BLK/YEL
PCM CONNECTOB A I32P)
'97 model:
Wire side of female terminals
PCM/ECM CONNECTOR A {32P}
38 - 00 models:
Wire side of {em6le terminals
* How to use the BackDrobe SetsConnect the backprobe adapters to the stacking patch cords, and connect the cords to a multi-meter. Using the wire insulation as a guide for the contoured tip ot the backprobe adapter,gently slide the tip into the connector trom the wire side until it comes in contact with the teFminalend o{the wire {see section l1).
Frcm page 22-34
Ch6ck for an open in the wire:1. Disconnect the jumper wire.2. Turn the ignition switch ON (ll).
3, Measure the voltage betweenthe No. 4 terminal ot the com'pressor clutch relay 4P socketand body ground.
Repair op.n in the wire betweenthe No. l7 fu3e and the compres-sor clutch ielay.
Check for an opon in the wire:1. Turn the ignition switch OFF,then reinstall the compressorclutch relay.2. Make sure the A"/C switch isOFF, then turn the ignitionswitch ON (ll).
3. Using a *Backprobe Set (T/N
07SAZ - 001000A), measurethe voltage between the No.17 terminal ol the PCM/ECMconnector A (32P) and bodyground with the PC M/ECMconnectors connected,
Repair open in lhe wire betwoonthe compressor clutch r6lay andthe PCM/ECM.
Check tor loose wires or Doorconnections at the PCM,/ECMconnecto. A {32P1. lf the connec-tions are good, sub3titute aknown-good PCM/ECM, androcheck. lf the symptom/indica-tion goas away, replac€ the origi-nal PCM/ECM.
126I1011
12151617'181S222321
BLK/RED
22-36
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A/C aystem does not come on{both fans and comDrossor).
Ch6ck lor .n open in the wire:1. Disconnect the A,/C pressureswitch 2P connector.2. Turn the ignition switch ON (ll).
3. Measure the voltage betweenthe No.2 terminal and bodyground.
ls there approx. 5 volts?
check tho PcM/EcM:Using a *Backprobe Set (T/N
07SAZ 0010004). measure thevoltage between the No.5 t27lterminal of the PCM/ECM connec,tor C (31P) [A 132P)l and bodyground with the PCM/ECM con-nectors connected,I l: '98 - 00 models
Rop.ir open in th6 wire botweonthe A/C Dr*sure switch and thePCM/ECM.
ls there approx.5 volts?
Check tor loo3e wires or Doorconnections at the PCM/ECMconnoctor C l3lPl lA (32Pll. It theconnections arg good, 3ubdtitut€a known-good PCM/ECM, andrecheck. ll the 3ymptom/indica-tion go.. eway, r€placo thG origi-nal PCM/ECM,[ ]: '98 -00 models
A/C System
A/C PRESSURE SWITCH 2P CONNECTOR
fo page 22-38
PCM CONNECTOR C (31PI
'97 modol:
Wire side of female terminals
PCM/ECM CONNECTOR A I32P'
38 - 00 modeb:
Wire side of female terminals
* How to use the Backprobe SetsConnect the backprobe adapters to the stacking patch cords, and connect the cords to a multi-meter. Using the wire insulation as a guide for the contoured tip ol the backprobe adapter,gently slide the tip into the connector from the wire side until it comes in contact with the ter.minalond olthe wire (see section 11).
(cont'd)
22-37
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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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Both heater and A/C do not work.
Check the No. 17 (7.5 A)fuse in theunder-dash fuse/relay box, and theNo. 47 (7.5 A) fuse in the under-hood luse/relay box.
nophcc ih. fur.l.l, .nd r.check.
Check tor rn open in the wiro:1. Remove the heater controlpanellsee page 22 46).2. Turn the ignition switch ON (ll).3. Measure the voltage betweenthe No. 1 terminal of theheater control panel 8P con-nector and body ground.
R.pair opan in lha wlra batw.cnthe No. 1? fuaa and tha h.ltcrcontrol panal.ls thero battery voltage?
Chgck for an opan in th€ wirg:1. Turn the ignition switch OFF.2. Measure the voltage betweenthe No. l l terminal of thoheater control panel 20P con-noctor and body ground.
Repsil opon in tha wi.a batwcanth. No. 47 tur. and tho hoitorcontlol panol.
ls there battery voltags?
Check for an opon in the wire:Ch6ck lor continuity betwoen theNo. 7 terminal of the heater con-trol panel 8P connector and bodyground.
Check for an opon in tho wirab6{woon tho hoatar control p.noland body ground. It the wir. i3OK, chsck for poor ground rtGlOl lnd Glo2.
Check for loose wire3 or oooaconnection3 at the haater controlprnol 8P and 20P connoctors. Itthc conncction3 are good, substi-tuta a known-good h€ater con-trol prnol, and rechecft. lf thesymptom/indic.lion go.3 ewry,repl.cg the original ha.ter con-tlol oancl.
HEATER CONTROL PANEL 8P CONNECTOR
Wire side ot female terminals
HEATER CONTROL PANEL 2OP CONNECTOR
I2A,/1,/58910
1t12131a151517181920
WHT/BLU
Wire side of female terminals
23
{578
BLK
0
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Heater Control PanelBlower Unit
Replacement
'1.Remove the center panel together with the heater
control panel and the audio unit (see section 20).
Remove the self-tapping screws and the heater con-
trol panel from the center panel.
3. lnstall in the reverse order of removal.
CENTER PANEL
22-46
1.
Replacement
Bemove the evaporator (see page 22-48),
Disconnect the connectors from the blower motor,
the blower motor high relay, the power transistor
and the recirculation control motor. Remove the
wire harness clio from the recirculation control
motor, and release the wire harness from the clamp
on the blower unit. Remove the mounting bolts, the
mounting nut and the blower unit.
6x1.0mm9.8 N.m (r,0 kgf.m, 7.2 lbl.ftl
9.E N.m 11.0 kgf.m,7.2lbtftl
lnstall in the reverse order of removal. Make sure
that there is no air leakage.
6x1.0mm
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Overhaul
Note these items when overhauling the blower unit.
. The recirculation contfol motor. the power transistor, the blower motor high relay, and the blower motor can be
replaced without removing the blower unit.
. Betore reassembly, makesurethatthe recirculation control doorand linkage move smoothly without binding.
o After reassembly, make sure the recirculation control motor runs smoothly (se€ page 22-42).
o Make sure that there is no air leakage.
RECIBCULATION CONTBOL MOTORReplacement. page 22-42
BLOWER
m
Tost, page 22-45
POWEB TMNSISTORTest. page 22'44
22-47
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Evaporator
Replacement
1.Recover the refrigerant with a recovery/recycling/
charging station (see page 22-59).
Remove the battery.
Remove each bolt, then disconnect the suction and
receiver lines from the evaporator. Plug or cap the
lines immediately after disconnecting them to avoid
moisture and dust contamination,
RECEIVER LINE
..
\
6x1.0mm9.8 N'm (1.0 kgf m,7.2 tbl.ttl
Remove the glove box (see section 20).
Remove the self-tapping screw and the passenger's
dashboard lower cover, then remove the bolts and
the glove box frame together with the knee bolster.
GLOVE BOX FRAME
KNEE
22-44
6. Disconnect the connector from the evaoorator tem-
oerature sensor. and remove the wire harness from
the evaporator. Remove the self-tapping screws, the
mounting bolt and the mounting nut. Disconnect
the drain hose, then remove the evaporator.
5xl,0mm9.8 N.m {1.0
II
I
Io
kgf.m, 7.2 lbf.ftl
, -l: "
7.
EVAPORATOR
6x1.0mm9.8 N.m (1.0 kgtm,7.2lbf.ftl
Install in the reverse order of removal, and note of
these items.
. lf you're installing a new evaporator, add refrig-
erant oil (SP.10) (see page 22-541.
Replace the O-rings with new ones at each fit-
ting, and apply a thin coat of refrigerant oil
before installing them. Be su.e to use the right
O-rings for HFC-134a (R-134alto avoid leakage.
Apply sealant to the grommets.
Make sure that there is no air Ieakage.
Charge the system (see page 22-6'll, and test its
performance (see page 22-56]-,
a
a
a
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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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