air box HONDA CR-V 2000 RD1-RD3 / 1.G Repair Manual

a
Heater and Air Conditioning
Heater ...........21
NOTE: Section 21 ("Heater") is included in section 22.
Air Conditioning ......'..'.. '.'22'1
SUPPLEMENTAL RESTRAINT SYSTEM (SRS}
This model has an SRS which includes a driver's airbag in the steering wheel hub, a passenger's airbag in the dashboard
above the glove box ('97,00 models). and seat belt tensioners in the seat belt retractors ('98 - 00 models). Information
necessary to safely service the SRS is included in this Service Manual. ltems marked with an asterisk (*) on the contents
page include. or are located near, SRS components. Servicing, disassembling or replacing these items will require special
precautions and tools, and should only be done by an authorized Honda dealer.
@. To avoid rendering the SRS inoperative, which could lead to personal iniury or death in the event of 8 severe frontal
collision, all SRS service work must be performed by an authotized Honda dealer.
lmproper service procedures, including incorrect removal and installation of the SRS, could lead to personal iniury
caused by unintentional deployment of the airbags ('97 - 00 models), and seat belt tensioners 138 - 00 models).
Do not bump the SRS unit. Otherwise, the system may fail in case of a collision, or the airbags may deploy when the
ignition switch is ON {lll.
SRS eleqtrical wiring harnesses are identified by yellow color coding. Related components are located in the steering
column, front console, dashboard, dashboard lower panel, and in the dashboard above the glove box. Do not use elec-
tricaltest equipment on thes€ cilcuils.
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Rcpbcc tho blower motor rolay.
Ch.ck th. under-hood tu.o/rolaybox:Measur6 the voltage between theNo. 3 terminal ofthe blower motorrelay 4P socket and body ground.
Chack tor an open in the wilo:1. Turn the ignition switch ON (ll).
2. Measure the voltage betweenthe No. 4 terminal of theblower motor relav ,[P socketand body ground.
Ropair opon in the wirs botwoonth. No. 17 fu3o and th. blow6rmotol lolay.ls thore battery voltage?
Chack tor an opon in tho wilo:1. Turn the ignition switch OFF.2. Check for continuity betweenthe No. 2 terminal ot theblower motor relay 4P socketand body ground.
Chock tor !n opan in the wilebstween tha blowar motor ralaY.nd body ground. It tho wilc isOK, chock fol poor ground atG/Ol and G402.
Ropair opon in th. BLU/WHTwira batwaan lho blowor motolrohy and tho blowe. motor.
Frcm page 22-16
BLOWER MOTOR RELAY 4P SOCKET
922-1
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Troubleshooting
Mode Control Motor
NO
MODE CONTROL MOTOR 7P CONNECTOR
13I5
BLK/YEL
Wire side of female terminals
HEATER CONTROL PANEL 2OP CONNECTOR
BRN/WHT
Wire side of female terminals
Mode control motol does not run.or ono or more modes are inoD€aa-
Check the No. 17 {7.5 A) Iuse inthe under-dash fuse/relay box.
Replace the tus€, snd iecheck.
Chock tor an open in th€ wi.6:1. Disconnect the mode controlmotor 7P connector.2. Turn the ignition switch ON (ll).3. Measure the voltage betweenthe No. l terminal and bodyground.
Repair opon in the wire betwoontho No. 17 luse and tho modecontrol motor.
Check the mode control motor:1. Turn the ignition switch OFF.2. Test the mode control motorGee page 22 41') .
Chock th€ mode cont.ol link.geand doors:1. Remove the mode controlmotor (see page 22-41).2. Check the mode control linkageand doors for smooth move-ment,
ls lhe mode control motor OK?
Do the mode control linkageand doors move smoothly?
Replece the inod6 control motor.
Chock for s shon in the wir€s:1. Remove the heater controlpanel (see page 22'46).2. Check for continuity betweenthe No. 12, 13, 14, 15, 16 and 19terminals ol the heater controlpanel 20P connector and bodyground individuaily.
Repair any short in the wire(slbetween the mode control rnotoaand the h6ater control Danel.
ls there continuity?
2l,/1,/8I10
111213ta151617r81320
BLU
[E!r!
YEL/RED
Ii
To page 22-23
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Troubleshooting
Recirculation Gontrol Motor
YES
To page 22-25
REORCULATION CONTROL MOTOR,rP CONNESTOR
q?- T--- V-l
l1, lrl/l1lI BI.IUYEL(v)
+
Wire side of female terminals
Rocirculation control door do6snoi chango botw€en Fresh andReci.culate.
Check the No. 17 {7.5 A)tuse in theunder-dash f use/relay box.
Roplace the fu36, and rechock.
Check for .n open in the wire:1. Disconnect the recirculationcontrol motor 4P connector.2. Turn the ignition switch ON (ll).3. Measure the voltage betlveenthe No. l terminal and bodyground.
Repair op6n in the wire bdtweenthe No. 17 fuse and thc recircule-tion control motor.
Check the rocirculation controlmoior:1. Turn the ignition switch OFF.2. Test the recirculation controlmotor (see page 22-42).
Chock ths r.circulation controllinkag. end doori1. Remove the recirculation con-trol motor (see page 22,42).2. Check the recirculation controllinkage and door for smooth
Do the recirculation control linkage and door move smoothly?Boprir the recirculrtion controllinkag. or dooJ,
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Both Fans
RADIATOR FAN RELAY 'P SOCKET
BLK/YEL
PCM CONNECTOR A I32PI
'9? model:
PCM/ECM CONNECTOR A (32PI
'98 - 0O mod6ls:
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 multimeter. Using the wire insulation as a guide for the contoured tip of the backprobe adapter,gently slide the tip into the connector from the wire side until it comes in contact with the terminal end ofthe ware {see section l1).
Check the No. 17 (7.5 A) tuse inthe under-dash fuse/relay box.
Reolace the tuse. and recheck.
Check for an op€n in the wire:1. Remove the radiator fan relay.2. TLrrn the ignition switch ON (ll).
3. Measure the voltage betweenthe No.4 terminalofthe radiator fan relay 4P socket andbody ground.
Repair open in the wire betweenlhe No. 17 luse and the radiatortan relay.
Check for an open in the wire:1. Make sure the A/C switch isOFF.2. Using a *Backprobe Set {T/N07SAZ - 001000A), measurethe voltage between the No. 27I20l terminal ol the PCM/ECMconnector A (32P) and bodyground with the PCM/ECM con-nectors connected.[ ]: '98 - 00 models
Repair open in the wire b€tweenthe.adiator fan ralav, the con-denser tan rolay and the PCM/ECM.
Check tor loose wires or poor con-nodions at the PCM/ECM connoc-tor A (32P1. lf the connections arcgood, substitute a known-goodPCM/ECM, and recheck. It thesymptom/indicalion goes away,r.plrce the original PCM/ECM.
1
2
1
12461011
12t5t61718r9222321
GRN
Wire side oI female terminals
22-33
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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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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]-,
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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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Connector ldentification and Wire Harness Routing
Engino Wire Harness
Connecto; or
Terminal
Number of
CavitiesLocationConneqts toNotos
c101
c102
c103
c 104
c105
c105
c106
c 107
c 108
c 109
c]10
c1l'l
c112
c113
c't 14
cl16
cl16
c117
c118
c119
c120
c121
c't22
c't23
c't25
cl26
cl27
cr 28
cl29
c130
c131
c132
c 133
c134
c134
c135
c 136
10
6
1
2
1
2
1
10
20
31
16
22
l0
l0'14
14
1
Left side of engine compartment
Left side of engine compartment
Middle of engine
Middle of engine
Left side of engine compartment
Left side of engine compartment
Middle of engine
Middle of engine
Middle of engine
Middle of engine
Middle of engine
Middle of engine
Middle of engine
Middle of engine
Middle of engine
Middle of engine
Middle of engine
Middle of engine
Middle of engine
Middle of engine
Middle of engine
Right side of engine
Middle of engine
Behind right kick panel
Under right side of dash
Under right side of dash
Under right side of dash
Under right side of dash
Under right side of dash
Right side of engine
Right side of engine
Middle of engine
Middle of engine
Middle of engine
Middle of engine
Middle of engine
Middle of engine
Left side of engine compartment
Middle of engine
Middle of engine
Main wire harness (C304)
Main wire harness (C305):'97 - 98 models
No. 1 fuel injector
Crankshaft speed fluctuation (CKF) sensor
Alternator
Alternator
Engine oil pressure switch
No.2 fuel injector
Evaporative emission (EVAP) purge
control solenoid valve
No. 3 fuel injector
No. 4 fuel injector
Primary heated oxygen sensor(Primary HO2S) (sensor 1)
Radiator fan switch
Coolant temperature sending unit
Engine coolant temperature (ECT) sensor
Mainshaft speed sensor
Lock-up control solenoid valve
Back-up light switch
Shift control solenoid valve
Linear solenoid valve
Countershaft speed sesnsor
Starter solenoid
Distributor
Junction connector
PCM
ECIWPCM
ECM/PCM
ECM/PCM
Main wire harness (C,|:}1)
IVT gear position switch
Vehicle speed sensor (VSS)
Throttle position (TP) sensor
MAP sensor
ldle air control (lAC)valve
lntake air temperature (lAT) sensor
Junction connector
Junction connector
Power steering pressure (PSP) switch
Junction connector
Knock sensor (KS)
A/r
USA
Canada
Alr
AlT
M/'r
Afi
'97mooel
'97 model'98 - 00
mooets
'99 - 00
models
T101
r102
Left side of en0ine companment
Right side of engine compartment
Alternator
Under-hood fuse/relay box
G101Middle of engineEngine ground, via engine wire harness
23-14
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Connector ldentification and Wire Harness Routing
Hoat6r Sub-harness
Connector or
Tgrminal
Numbsr ot
CavitiesLocalionConnects toNotes
c73']
c731
c732
c733
c734
c735
c736
c737
c738
c739
c7 40
c7 40
5
7
7
24
1
Under middle of dash
Under middle of dash
Behind middle of dash
Behind middle of dash
Behind glove box
Behind glove box
Behind glove box
Behind glove box
Behind glove box
Behind glove box
Behind middle of dash
Behind middle of dash
Main wire harness {C436)
Main wire harness (C436)
Mode control motor
Dashboard wire harness (C522)
Air mix control motor
Evaporator temperature sensor
Blower motor high relay
Blower motor
Power transistor
Recirculation control motor
Dashboard wire harness (C523)
Dashboard wire harness (C523)
'97 model'98 - 00
modsls
'97 model'98 - 00
mooels
Combination Switch Sub-harness
Conneqtor ol
Terminal
Number of
CavitiesLocationConnests toNotos
c751
c753
c754
c755
c756
c757
c758
c760
c760
6
7
12
10
2
7
6
8
5
Above under-dash fuse/relay box
Above under-dash fuse/relay box
Under left side of dash
Under left side of dash
Behind steering column
Behind steering column
Behind steering column
Behind steering column
Behind steering column
Behind steering column
Under left side of dash
Under left side of dash
Under-dash fuse/relay box (C914)
Under-dash fuse/relay box {C915)
Main wire harness (C413)
Main wire harness (C413)
Shift lock solenoid
Parking pin switch
Combination light switch
Combination light switch
Wiper/washer switch
Wiper/washer switch
Main wire harness (C442)
Main wire harness (C442)
'97 - 98
mod6ls'99 - 00
models
'97 - 98
models'99 - 00
models
23-36
,
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