Motor HONDA CR-V 1997 RD1-RD3 / 1.G Repair Manual

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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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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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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Ch6ck for an open in the wire:1. Disconnect the jumper wire.
2. Disconnect the radiator fan 2P
3. Check for continuity beNveenthe No. l terminal o{the radia-tor fan relay 4P socket and theNo. 2 terminal of the radia'tor fan 2P connector-
Repai. open in the wira betweenthe radiator fan .olay ,nd the radi'atorfan.
Check lor an open in the wi.e:Check for continuity between theNo. 1 terminal oI the radiator fan2P connector and body ground.
Check lor an open in the wir.
b€turosn the radi.tor fan and bodyground. lf ihe wire b OK, check folpoor ground .t G2()l .
ls there continuity?
Replace the radiator tan motor.
Ftom page 22-26
RADIATOR FAN REI-AY 4P SOCKET
BLK/RED
RADIATOR FAN 2P CONNECTORWire side of lemale terminals
(cont'd)
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Troubleshooting
Condenser Fan {cont'd)
CONDENSER FAN RELAY 4P SOCKET
r---------t wHT
lr_f__l12 | |
fT;.] |I/Or\j/
I
G
CONDENSER FAN 2P CONNECTORWire side ol temale torminals
-r+-,.12
TBtK
@
!
Chock for an open in the wire:'1. Disconnect the iumper wire.2. Disconnect the condenser fan2P connector.3. Check for continuity betweenthe No. 1 terminal of the con,denser fan relay 4P socket andthe No. 2 terminal of the con-denser fan 2P connector.
Ropair open in the wire betwoenth€ condenser fan rslay and thecondenser tan.
ls there continuity?
Chech tor an open in the wire:Check for continuity between theNo. I terminal of the condenserfan 2P connector and bodyground.
Check for an open in thg wirebetween the condenser fan andbody ground. lf the wiro is OK.check tor poor ground .t G202.
Replace tho condenser tan motor.
22-30
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Troubleshooting
Heater Control Panel Input/Output Signals
HEATER CONTROL PANEL CONNECTORS
8P CONNECTOR
Wire side of female terminals
2OP CONNECTOR
8P CONNECTOR
Cavitylrvire cololSignalCavityWire cololSignal
'lBLK/TE LIG2 (POWER)INPUTREDDASH LIGHTS ERIGHT-
NESS CONTROLLERCUTPUT
2GRN/REDRECIRCULATEINPUTRE D/BLK
COMBINATION LIGHT
SWITCH (Via No. 30 (7.5 A)
fuse)
INPUT
GRN/VVHTFRESHINPUT1BLKGROUNDOUTPUT
BLUI/ELREAR WINDOW
DEFOGGER RELAYCUTPUT8BLU/BLKBLOWER FEEDBACKINPUT
20P CONNECTOR
CavityWire colorSignalCavityWire colorSignal
1GRYAIR MIX POTENTIAL +5VOUTPUT'llWHT/BLUBACK PU (POWER)INPUT
2GRNEVAPORATOR TEMPERA.
TURE SENSOROUTPUT12YELMODE HEAT/DEFINPUT
13BLU/BLKMODE HEATINPUT
14GRN/YELMODE HEAT/VENTINPUT
ICYEUREDMODE VENTINPUT
6PNI(BLKAIR MIX POTENTIALINPUTtoYEUBLUMODE DEFINPUT
717RED/BLUAIR MIX COOLOUTPUI
8ORNrur'HTBLOWER MOTOR HIGH
RELAYINPUT18RE D/VE LAIR MIX HOTOUTPUI
BRNSENSOR GROUNDINPUT'19BRNA/VHTIVIODE MOTOR GROUNDINPUT
10BLU,ryVHTA"/C PRESSURE SWITCHINPUT20T GRN/BLKPOWER TRANSISTOR BASECUTPUT
22-40
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Mode Control Motor
Replacement
1. Disconnect the 7P connector from the mode control
motor. Remove the rod from the arm of the mode
control motor, Remove the self-tapping screws and
the mode control motor.
2.Install in the reveGe order of removal. After installa-
tion, make sure the mode control motor runssmoothlv.
7P CONNECTOR
MODE CONTROL MOTOR
Test
1.Disconnect the 7P connector from the mode control
motor.
Connect battery power to the No. 1 terminal, andground the No. 7 terminal. To avoid damaging the
mode control motor, do not reverse power andgrouno.
MODE CONTROL MOTOR
Using a jumper wire. connect the No. 7 terminalindividually to the No, 2,3, 4,5 and 6 terminals in
that order. Each time the connection is made. the
mode control motor should run smoothly and stop.
lf the mode control motor does not run when jump-
ing the first terminal, jump that terminal again afterjumping the other terminals. The mode control
motor is OK it it runs when jumping the first termi-
nal again.
lf the mode control motor does not run in step 3,remove it, then check the mode control linkage and
doors for smooth movement. lf they move smoothly,
reDlace the mode control motor.
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Recirculation Control Motor
Replacement
1. Oisconnect the 4P connector and the wire harness
clio from the recirculation control motor. Remove
the self-tapping screws and the recirculation control
motor,
lnstall in the reverse order of removal. After installa-
tion, make sure the recirculation control motor runs
smoothlv.
{P CONNECTOR
22-42
Test
1.
4.
Disconnect the 4P connector from the recirculation
control motor.
Connect battery power to the No. 1 terminal, and
ground the No. 2 and No. 4 terminals; the recircula-
tion control motor should run smoothly. To avoid
damaging the recirculation control motor. do not
reverse power and ground.
RECIRCULANON CONTROL MOTOR
Disconnect the No. 2 or No. 4 terminals from ground;
the recirculation control motor should stop at Fresh
or Recirculate. Don't cvcle the recirculation control
motor for a long time.
lf the recirculation control motor does not run in step
2, remove it, then check the recirculation control link-
age and door for smooth movement. lf they move
smoothly, replace the recirculation control motor.
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Air Mix Gontrol Motor
Replacement
1. Disconnect the 5P connector from the air mix con-
trol motor. Remove the self-tapping screws, the air
mix control motor and the flange collar.
AIR MIXCONTROLMOTOR
A
6
Install in the reverse order of removal. After installa-
tion. make sure the air mix control motor runs
smoothlv.
5P CONNECTOR
22-43
Test
1.Disconnect the 5P connector from the air mix con-
trol motor.
Connect battery power to the No. I terminal of the
air mix control moto., and ground the No, 5 termi-
nal; the air mix control moto. should run, and stop
at MAX HOT. lf it doesn't, reverse the connections;
the air mix control motor should run, and stoo at
MAX COOL.
lf the air mix control motor does not run, remove
it, then check the air mix control linkage and
doors for smooth movement.
lf they move smoothly, replace the air mix con-
trol motor.
AIR MIX CONTROL MOTOR
4.
Measure the resistance between the No. 2 and No. 3
terminals. lt should be approximately 6 kO t 20%.
Measure the resistance between the No. 2 and No, 4
terminals, lt should be approximately 4.8 kO:t 20% at
MAX HOT and approximately '1.2 kO t 20% at lilAx
cooL.
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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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