Fan switch HONDA CR-V 2000 RD1-RD3 / 1.G Workshop Manual

Standards andService Limits
Engine LubricationSection 8
CoolingSection 10
Fuel and EmissionsSection 11
MEASUREMENTSTANDARO {NEWISERVICE LIMIT
Engine oilCapacityf (US qt, lmp qt)4.6 (4.9, 4.0)Ior engine overhaul3.8 {4.0,3.3)for oilchange, including filter3.5 (3.7, 3.1) for oil change, without Iilter
OilpumpInner-to-outer rotor clearancePump housing-to-outer rotor clearancePump housing-to rotor axial clearance
0.04 - 0.16 (0.002 - 0.006)0.10 -0.19 (0.004 - 0.007)0.02 -0.07 (0.001 - 0.003i
0.20 (0.008)
0.20 (0.008)
0.15 (0.006)
Relief valvePressure setting at engine oil temp. 176'F (80'C)kPa (kgt/cm,, psi) At ldleAt 3,000 rpm70 (0.7, 10) min.340 {3.5,50) min.
MEASUREMENTSTANDARO INEW}
RadiatorCoolant capacity , (US q1, lmp qt)
llncluding engine, heater, ILcooling line and reservoirlReservoir capacity:0.61 (0.63 US qt,0.53lmp qt)
M/T
5.9 {6.2, 5.2}tor overhaul3.9 (4.1, 3.4ifor coolant change6.0 (6.3, 5.3ifor overhaul4.0 (4.2, 3.5) for coolant change
Radiator capOpening pressure kPa (kgf/cm?, psi)93 - 123 (0.95 - 1.25, 14 18)
ThermostatStarts to open 'F 1"C)Fully open 'F ("C)
Valve lift at tully open
169 - 176 (76 - 80)194 (90)
8.0 (0.31imin.
Cooling fanThermoswitch "ON" temperature "F {'C)Thermoswitch "OFF" temperature 'F ('C)196 - 203 (91 - 95)Subtract 5 - 14 (3 - 8) trom actual "ON" temperature
MEASUREMENTSTANDARD INEW}
Pressure regulatorPressure with regulator vacuum hose disconnectedkPa (kgflcm', psi) '97,'98 models'99, '00 rnodels260 - 31012.7 3.2,38- 46)270 -32012.8 3.3,40 - 471
FueltankCapacity / (US gal, lmp gal)58 (15.3, 12.8)
E ngineldle speed with headlights and cooling fan off rpm'97 model'98 model'99, '00 models
MTAT {E or E position)
750 r 50730 1 50
750 t 50750 r 507301 50
Fast idle rpm '97 model'98 model'99, '00 models1,5001 2001,600 r 200
1,5001 2001,5001 2001,600 r 200
ldle CO %0.1 max.
2-4
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Gharging System
Troubleshooting (cont'd)
Alternator/Regulator Test
NOTE: Make sure the battery is sufficiently charged (see section 23).
FIELDSELECTOR
TESTswtTcH
I
VOLTMEIERPOSmVEt
NEGATIVE TESTERCABI.E {BLKI
(BED)
TESTERINDUCTIVEPICK.UP{GRN)CABLE IREDIAhernator/Regulator Test (cont'd)lI Release the accelerator pedal,and let the engine idle.2 Make sure all accessories areturned off. Turn the selectorswitch to posjtion 2 (charging).3 Remove the inductive pick up,and zero the ammeter.{ Place the inductive pick-upover the battery ground cableso that the arrow points to thebaftery negative terminal.5. Raise the engine speed to2 000 rpm, and hold ir there.
I
(
T
I
WHT WIRE
Alternator/Regulator Test:1. Connect a Sun VAT-40 (orequrvalent tester), and turnthe selector switch to position1{sraning).2. Shift to neutral (A/T in E orN) position, and start theengane. Hold the engine at3,000 rpm with no load untilthe radiator fan comes on,then let it idle.3. Raise the engine speed to2,000 rpm, and hold it there.
ls the voltage over 15.1 V?
ls the voltage less than 13.5 V?
Altarnator/Regulator Test (cont'd:Apply a load with a VAT-40 untilthe battery voltage drops tobetween 12 - 13.5 V.
To next page
4-28
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Actuator Cable Adiustment
'1.Check that the actuator cable operates smoothly
with no binding or sticking.
Start the engine. Hold the engine at 3,000 rpm with
no load (A,/T in E or E position, M/T in neutral)
until the radiator fan comes on, then let it idle.
Measure the amount of movement of the actuator
rod until ths cable pulls on the accelerator lever
(engine speed starts to increase). Free play should
be 11 t 1.0 mm (0.43 i 0.04 in).
LOCKNUT FREE PLAY: 11 t 1.0 mm
10.43 r 0.04 in)
lf free play is not within specs, loosen the locknut,
and turn the adjusting nut as requirsd,
NOTE: lf necessary, check the throttl€ cable frso
play (s€e section 11), then recheck the actuator rod
free play.
Retighten the locknut, and recheck the free play.
st
te
ACTUATOR ROD
Clutch Switch Test
1. Disconngct ths 2P connector from the clutch switch.
CLUTCH SWITCH 2P CONNECTORTerminalside ofmale terminals
2.
5.
Remove the clutch switch,
Check for continuity between the terminals accord-
ing to the table.
4. lf necessary, replace the switch or adjust the pedal
height (see section t2).
Terminal
Clutch Switch \
OEPRESSED
RELEASEDoo
4-43
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13. Remove the upper radiator hose, heater hose and
water bypass hose.
WATER BYPASS
UPPEBRADIATORHOSE
17
HEATERHOSE
Remove the engine wire harness connectors and
wire harness clamps from the cylinder head and the
intake manifold.
o Four fuel injector connectors
. Engine coolant temperature (ECT) sensor con-
neclor
. Radiator fan switch connector
. Coolant temperature gauge sendlng unlt connec-
tor
. Throttle position sensor connector
. Manifold absolute pressure {MAP) sensor con-
nector
Primary heated oxygen sensor (primary HO2S)
connector
ldle air control (lAC) valve connector
Distributor connector
Remove the spark plug caps and distributor from the
cylinder head.
Remove the cruise control actuator (see section 4).
Support the engine with a jack, then remove the
upper bracket. Make sure to place a cushion
between the oil pan and the iack (see page 6-10).
a
18. Remove the cylinder head cover.
19. Inspect the timing belt (see page 6-9).
CYLINDER
(cont'd)
6-19
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Oil Pressure SwitchOil Pressure
Testing
Remove the YEL/RED wire from the engine oil pres-
sure swrtcn.
Check for continuity between the positive terminal
and the engine {ground). There should be continuity
with the engine stopped. There should be no conti-
nuity with the engine running.
L
PRESSURE SWTCH18 N.m {1.8 kgf.m,13 tbr.ftlApply liquid sealantto the threads,
lf the switch fails
level. lf the engine
orl pressure.
to operate, check the engine oil
oil level is OK, check the engine
Testing
lf the oil pressure warning light stays on with the engine
running, check the engine oil level. lf the oil level is cor-
rect:
L Connect a tachometer.
2. Remove the engine oil
an oil pressure gauge.
ADAPTER(1/8" - 28, BSTP)(Commercially available)
pressure switch. and install
OIL PRESSURE GAUGE
{Commercially available)
4.
ENGINE OIL PRESSURESWTTCH MOUNNNGHOt-E
Start the engine. Shut it off immedjately if the gauge
registers no oil pressure. Repair the problem before
continuing.
Allow the engine to reach operating temperature (fan
comes on at least twice). The pressure should be:
Engino Oil Temperature: 176'F (80'C)
Engine Oil Pressure:
At ldle:70 kPa (0.7 kgt/cm', 10 psil
minimum
Ai 3,000 rpm: 3/r0 kPa {3.5 kgt/cm', 50 psi)
minimum
lf oil pressure in not within specifications, inspect the
oil pump (see page 8-9).
8-7
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Cooling
f ffustrated Index ........... ..... 1O-2
Radiator
Rep|acement ...........,....,...................... 10-4
Engine Coolant Refilling and
Bleeding ..,.,................. 10-5
Cap Testing .................... 10-7
Testing ......10-7
Thermostat
Rep|acement ....................................... 10-8
Testing ...... 10-9
Water Pump
lllustrated lndex ....,..... .. 10-10
Inspection . 10-1 1
Replacement ....................................,.. 10-1 1
Fan Gontrol
Component Location Index ............... 10-12
Circuit Diagram ............. 10-13
Fan Motor Testing ......... 10-14
Radiator Fan Switch Testing ............. 10-14
Coolant Temperature Gauge
Gauge Testing ............... 10-15
Coolant temperature Sending
Unit Testing ........,....... 10-15
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Water Pump
lllustrated Index
ENGINE COOLANTTEMPERATURE IECTISENSOR18 N.m 11,8 kgt.m,13 tbt.ftl
COOLANTTEMPERATUREGAUGEUNIT
6x1.0mm9.8 N'm (1.0 kgf.m,7.2 tbt frl
9 N.m {0.3 kgf.m,7 tbf.fttApply liquid gasketto the threads.
WATER OUTLETCOVERApply liquid gasker part No.087'18 - 0001 or 08718 - 0003to the mating surface.
RADIATOR FAN SWITCH2il N.m (2.i1 kgl.m,17 tbfft)
WATER PUMPlnspection, page 10-11
O-RINGReplac€.
6xl,0mm12 N.tn n.2 lgl.rn,8.7 tbf'ft)
CONNECTINGPIPE
6x1.0mm12 N.m 11.2 kgf.m,8.7 tbtftl
10-10
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Circuit Diagram
UNDER OASHFUSEiRELAY BOX
6; E;';lwHTsLka rtF',*",El-l
I
RAOIATORFANSWITCHfClosed :Above)L 199oF {930C) J
BLK/RED
I
L^,^,.,
T*'
IBLK
I
I
oro,
IGNITION SWITCH
No.41{100A) N0.42140A)
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Fan Control
Fan Motor Testing
1. Disconnect the 2P connector.
Terminalside ofmale terminals
Test the motor by connecting battery power to theNo. 2 terminal and ground to the No. 1 terminal.
lf the motor fails to run or does not run smoothly,reptace rt.
RADIATOR FAN MOTOR
10-14
Radiator Fan Switch Testing
E@ Removing the radiator fan switch whilethe engine is hot can cause the coolant to spray out, seri-ously scalding you. Always let the enginc and radiatorcool down before removing the radiator fan switch.
1. Remove the radiator fan switch from the thermostathousing (see page 10 '10).
2. Suspend the radiator fan switch in a container ofwater as shown.
Heat the water, and check the temperature with athermometer. Do not let the thermometer touch thebottom of the hot container.
Measure the continuity between the A and B termi-nals according to the table.
Bleed the air from the cooling system after installingthe radiator fan switch (see page 10-5).
Terminal
op".*i- Tr"ip".a*" \.B
SWITCH
ON196 - 203"F
{91 - 95.C)o---o
OFF
5 - 14"F (3 - 8.C)
lower than the tem-peratu re wh en itgoes on
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Powertrain Control Module Terminal Arrangement -'97 Model
FCM CONNECTOR A (32P)NOTE: Standard battery voltage is 12 V.
Wire side of lemale terminals
f€rminalnumlreJWirecolor
Telminalnama
DescriptionSignal
YELlNJ4 (No.4 FUELINJECTOR)Drives No. 4 {uel injector.With engine running: duty controlled
2BLUlNJ3 (No.3 FUELINJECTOR)Drives No. 3luel injector.
REDlNJ2 {No.2 FUELINJECTOR)Drives No.2 tuel injector.
BRNlNJl (No. l FUELINJECTOR)Drives No. 1 fuel injector.
5BLK WHTSO2SHIC (SECONDARY
HEATED OXYGEN SENSOR HEATER CONTROL)
D ves secondary heated oxygensensor heater.With ignition switch ON {ll): battery voltageWith fully warmed up engino running: dutycontrolled
6BLKAr'YHT
PO2SHTC (PRIMARY
HEATED OXYGENSENSOR HEATERCONTROL}
Drives primary heated oxygensensor heater,With ignition switch ON lll): battery voltagewith fully warmed up engine running: dutycontroll6d
I8RN/BLKLGl (LOGIC GROUND}Ground forthe PCM control circuit.Less than 1.0 V at all times
10BLKPG1 lPOWER GROUND}Ground for the PCM power circuit.
l1YEUELKIGPl lPOWER SOURCE}Power source for the PCM controlcircuit.
With ignition switch ON (ll): battery voltageWith ignition switch OFF: 0 V
12BLI(BLUIACV {IDLE AIRCONTROL VALVE}Drives IACV.With €ngine running: duty controlled
REDryEL
PCS (EVAP PURGECONTFOL SOLENOIDVALVE)
Drives EVAP purge controlsolenoid valve.
With engine running, engine coolantbelow 154'F (68"C): battery voltageWith engine running, engine coolantabove 154"F (68"C): duty controlled
16GRN/VELFLR (FUEL PUMP RELAY)Drives Iuel pump relay.0 V for two seconds after turning ignition
switch ON lll), then battery voltage
118LI(REDACC (A,/C CLUTCHRELAY}Drives Ay'C clutch relay.With comoressor ON: 0 VWith compressor OFF: baftery voltage
18GRN/ORNMIL (MALFUNCTION
INDICATOR LAMP}Drives MlL.With MIL turned ON: 0 VWith MIL turned OFF: baftery voltage
19*WHT/GRNALTC (ALTERNATOR
CONTROL}Sends alternator control signal.With tully warmed-up engine running:
battery voltageDuring driving with smallelectrical load:0 '
20YEUGRNICM (IGNITION CONTROLMODULE)Sends ignition pulse.With ignition switch ON (ll): baftery voltageWith engine running: pulses
22BRN/BLKLG2 (LOGIC GROUND}Ground tor the PCM control circuit.Less than 1.0 V at alltimes
23BLKPG2 {POWER GROUND}Ground lor the PCM power circuit.
24YEUBLKIGP2 {POWER SOURCE}Power source for the PCM controlcircuit.
With ignition switch ON (ll): battery voltage
With engine switch OFF: 0 V
27GRNFANC (RADIATOR FANCONTROL)Drives radiator {an relay.With radiator fan running: 0 VWith radiator fan stopped: baftery voltage
*: USA
{cont'd)
11-67
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