Ac and heat HONDA CR-V 1998 RD1-RD3 / 1.G Manual Online

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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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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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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4. Disconnect the heater hoses from the heater unit.
Engine coolant will run out when the hoses are dis-
connected; drain in into a clean drip pan.
CAUTION: Engino coolant will damage p8int. Ouickly
rinse any spill€d engine coolant Itom painted sur-
faces.
HEATER HOSEIOUTLET SIDE)
Remove the mounting nut from the heater unit.
Take care not to damage or bend the fuel lines, the
brake lines. etc.
CLAMPS
13 N.m 11.3 kg{.m,9.4 lbtftl
22-51
7.
ll.
Remove the dashboard (see section 20).
Remove the evaporator (see page 22-48).
Disconnect the connectors from the mode control
motor and the air mix control motor, and remove the
wire harness clips and wire harness from the heater
unit. Remove the clip from the heater duct, then
remove the mounting nuts and the heater unit
6x1.0mm9,8 N.m (1.0 kgt m,7.2lblft)
qInstall in the reverse order of removal. Make note of
the following items.
a
a
a
a
Apply sealant to the grommets.
Do not interchange the inlet and outlet heater
hoses. Make sure that the clamps are secure.
Refill the cooling system with engine coolant
{see section 10).
Adiust the heater valve cable (see page 22-53).
Make sure that there is no air leakage.
HEATER UNIT
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Heater Unit
Overhaul
1. Remove the self-tapping screws and the heater corecover.
Pull out the grommet from the heater core pipes.
Remove the self-tapping screw and the pipe clamp.
HEATER CORE COVER
Pull out the heate. core. Be careful not to bend the
inlet and outlet pipes during heater core removal.
Reassemble the heater unit in the reverse order of
disassemblv.
HEATER CORE
22-52
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Temperature Control
Adjustment
l. From under the hood, open the cable clamp, then
disconnect the heater valve cable from the heater
vatve arm.
From under the dash, disconnect the heater valve
cable housing from the cable clamp. and disconnect
the heater valve cable from the air mix contlol arm
Set the temperature control dial on MAX COOL with
the ignition switch ON (ll).
Attach the heater valve cable to the air mix control
arm as shown above. Hold the end of the heater
valve cable housing against the stop, then snap the
heater valve cable housing into the cable clamp.
HEATER VALVE ARM
HEATER VALVE CABLE
5. From under the hood. turn the heater valve arm to
the fullv closed position as shown, and hold it.
Attach the heater valve cable to the heater valve
arm, and gently pull on the heater valve cable hous-
ing to take up any slack, then install the heate. valve
cable housing into the cable clamp.
HEATER VALVE ARM
HEATER VALVE CABLE
22-53
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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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Relay and Gontrol Unit Locations
Dashboard (cont'd)
HEATER CONTROL PANEL
REAR WINDOW DEFOGGER RELAY
WINDOW RELAY
-rj,r1 /-\,r1Iu lJ-JlJ r*t
23-8
INTEGRATEO CONTROL UNITTURN SIGNAL/HAZARD RELAY
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Gonnector ldentification and Wire Harness Routing
How to ldentity Connectors:
ldentification numbers have been assigned to all connectors, The number is preceded by the letter "C" for connectors.
"G" for ground terminals or "T" for non-ground terminals.
Location
HarnessEngine CompartmsntDashboardOthers lFloor, Door,
8oof, Tailgate)
Starter cableT1, T2 and @
Battery ground cableG1 and O
Engine ground cableT3
Transmission ground cableT4
G3
Engine wire harnessC101 through C137
T101 and T102
G101
Engine compartment ware harnessC201 through C218
G201 and G202
Under-hood ABS fuse/relay box
wire harness
t5ano9
Main wire harnessC301 through C309
C351 through C361
C401 through C447
G401 and G402
Dashboard wire harnessC501 through C524 (C525)
G501
Left side wire harnessC551 through C581
G551, G552 and G553
Right side wire harnessC601 through C605
lnterior wire harnessC701 through C703
Rear bumper wire harnessC641 through C643
Heater sub-harnessC731 through C740
Secondary heated oxygen sensor
sub-harness
C721 through C722
Combination switch sub-harnessC751 through C760
Driver's door wire harnessC661 through C667
Front passenger's door wire harnessC6Tl through C676
Left rear door wire harnessC681 through C684
Right rear door wire harnessC69'l through C694
Rear wire harnessC611 through C520
Tailgate wire harnessC631 through C634
G631
SRS main harnessC801 through C808
G801
High mount brake light sub-harnessC651 through C653
Fuel tank oressure sensor sub-harnessC645 through C647
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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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