cooling HONDA INTEGRA 1998 4.G User Guide

ldle
Air
Gontrol System
Gonditioning Signal
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This signals the ECM when there is a demand for cooling from the air conditioning system'
ECM CONNECTORS
a l32Pl
LGl(BRN/BLKI
c t31Pt
ACSIBLU/REDI
wire side of femal€ torminals
;
L
LGI
JUMPERWIRE
ACS IBLU/REDI
Check lor.3hort in thG wira(ACS lino):1. Turn the ignition switch OFF.2. Disconnect the A/C pressure
switch connector and A/Cdiode connector,3. Turn the ignition switch ON (ll).
4. Measu re voltage betwo€nECM connector terminals C5and A9.
Ch.ck to.. rhorl in th. wir. IACSlincl:1. Turn the ignition switch OFF.2. Disconnect the ECM connec-tor C (31P).
3. Ch6ck {or continuity betwe€n
body ground tnd ECM con-nector terminal C5.
lsthere approx.5 V?
Rapair rhort In tho wira batwaon
th. EcM {c5l and thc A/c pre.-
sur. rwitch ot A/C diod.,
- Subtlilut I known{ood Ecttllnd raahack. lf prtactibad voft-
rgo ir now avaihbla, tcplacalh. originll ECM.- Saa tha air condhiond in.plction 1... r.ction 221.
Check lor an opan in th€ wi.a(ACC lin.l:'1. Turn the ignition switch OFF.2. Reconnect th6 A,/C pressure
switch connector and A/Cdiode connector.3. Turn the ignilion switch ON (ll).
4. Momentarily connect ECMconnector terminals A'17 andAg wkh a iumper wire severaltimes,
(To page 11"103)
IBRN/BLKI
Ial,/l l8 I r0 I rl
12't516 11alrslzo ,/ l4l a3 | 2.
aa2621zel dt
IBLK/REDI
11-102
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Emission Gontrol System
System Description
Three Way Catalytic Converter (TWCI
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The emission control system includes a Three Way
Catalytic Converter (TWC), Positive Crankcase Ventilation
(PCV) system and Evaporative Emission (EVAP) Control
system. The emission control system is designed to meet
tederal and state emission standards.
InsDeciion
!@@ Do not smoke during this procedure. Keep
any open llame away from your work area.
1. Start the engine. Hold the engine at 3,000 rpm with
no load {in Park or neutral) until the radiator fan
comes on, then let it idle.
2. Connect a tachometer.
Check and adjust the idle speed, if necessary (see
page '11-11 ! ).
Warm up and calibrate the CO meter according to the
meter manufacturer's instructions.
Check idle CO with rhe headlights, heater blower,
rear window defogger, cooling fan, and air condition-
er off.
NOTE: {Canada) Pull the parking brake lever up.
Start the engine, then check that the headlights are
olf.
CO meter should indicste 0.17o maximum.
DescriDtion
The Three Way Catalytic Converter {TWC) is used to convert hydrocarbons (HC), carbon monoxide (CO), and oxides of
nitrogen (NOx) in the exhaust gas, to carbon dioxide (COr), dinitrogen {Nr) and water vapor.
Bl8Cl engine l818Bl, 818C5 engines is similar):
FRONT OFVEHICLE
PRIMAEYHEATEDOXYGEN SENSORIPRIMARY HO2S}
HOUSING
WAYCATALYSTS
SECONOARYHEATEDOXYGEN SENSOR{SECONDARYH02St
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Stall Speed
V
€nt transmission damage, do not tost stall speod for mol€ than
shitt tho lever while raising the engina speed,
10 soconds at a time.
L
CAUTION:
a To prev€nt transmission damage, do not tost stall speod for mol€ than 10 soconds at a time.
a Do not shitt tho lever while raising the engina speed,
a Be suro to remove tho plossule gaugo bolore testing st8ll spe€d.
1. Engage the parking brake. and block all lour wheels.
2. Connect the tachometer, and start the engine,
3. Make sure the A/C switch is OFF.
4. After the engine has warmed up to normal operating temperature {the radiator fan comes on), shift into g position.
5. Fully depress the brake pedal and accelerator for 6 to I seconds. and note engine speed.
6. Allow two minutes for cooling, then repeat the test in [, [Dll and @ oositions.
NOTE:
a Stall speed tests should be used tor diagnostic purposes only.
. Stall speed should be the same in E, tr, tr and @ Fositions.
Stall Speed FPM: rpm
Specification:
Bl88l €ngine 2,5q) rpm
Bl8Cl engine 2.i|{10 .pm
Sorvice Limit:
81881 engins 2,350 - 2,650 rpm
Bl8Ct ongine 2,250 - 2,550 rpm
TROUBLEPROBABLE CAUSE
Stall rpm hish in E, E, I and @position
Low tluid level or ATF pump output
Clogged ATF strainer
Pressure regulator valve stuck closed
Slipping clutch
Stall rpm high in I positionSlippage of 1st clutch, 1st-hold clutch or 1st gear one-way clutch
Stall rpm high in E positionSlippage of 2nd clutch
Stall rpm high in ldnl posirionSlippage of 1st clutch. 1st gear one-way clutch
Stall rpm high in [!l positionSlippage of 4th clutch
Stall rpm low in E, E. I and @position
Engine output low
Torque convener one-way clutch slipping
14-97

Throttle Control Cable
Inspection
NOTE: Before inspecting the throttle controlcable, makesure:
a Throttle cable tree play is correct (see section I 1).a ldle speed is correct (see section 1l).a To warm up the engine to normal operating tempera-
ture (the cooling fan comes on).
1 . Verify that the throttle control cable is clamped cor-rectly in three positions.
CONTROL CABLE
LOWERHOSEClamp at the end ofblue tape on the cable.
Verily that the throttle controldrum is synchronized
with the throttle linkage while depressing and releas-
ing the accelerator pedal.
ll the throttle control drum is not synchronized with
the throttle linkage, adjust rhe throttle control cable.
(cont'd)
14-179

Adjustment
NOTE: Before adjusting the throttle controlcable, make
sure:
a Throttle cable lree play is correct (see section 11).a ldle speed is correct (see section 11).a To warm up the engine to normal operating tempera-
ture {the cooling fan comes on)
1 . Verify that the throttle control cable is clamped correctly in three positions.
THROTTLEATF COOLERPIPE
LOWERHOSEClamp at the end ofblue tape on the cable.
Verily that the throttle linkage is in the fully-closedposttron.
Loosen the locknut of the throttle control cable at
the throttle linkage.
CONTROL CABLE
LOCKNUTS
14-181
Push in this directron.
Remove the free play of the throttle control cable
with the locknut, while pushing the throttle control
drum to the tull-closed potision as shown.
5. Tighten the locknuts.
6.After tightening the locknuts, inspect the synchroni-
zation and throttle control drum movement.

J
Troubleshooting
Reference Chart
. Any abnormality must be corrected before continuing the test.. Because of the precise measurements needed, use a multimeter when testing.
Before performing any troubleshooting procedures check:. Fuses No, 56 (20 A), No. 57 (20 A) in the under-hood fuse/relay box, and No. 17 {7.5 A) in rhe under-dash fuse/relay box.. Grounds No. G401, G201, G151, G101. Cleanliness and tightness of all connectors
I'IT
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SYMPTOMREMEDY
Radiator fan does not run at all.Perform the procedures in the flowchart {see page 22-8).
Condenser fan does not run at all,Perform the procedures in the flowchart (see page 22-1O1.
Both fans {radiator and condenser) do not
run for engine cooling, but they both run
with the IVC on.
Perform the procedures in the tlowchart (see page 22-12).
Both fans do not run at all.Perform the procedures in the flowchart (see page 22-13).
Compressor clutch does not engage.Perform the procedures in the flowchart (see page 22-14).
l'lc system does not come on
{compressor and both fans).Perform the procedures in the flowchart (see page 22-15).
22-7

Troubleshooting
Engine Coolant Temperature(ECT}Switch
Both fans (radiator and con-denserl do not run for enginecooling, but they both run withthe A,/c on.
Disconnect the engine coolanttemperature lECT) switch 2P con
Turn the ignirion switch ON ( ll).
Measure the voltage between theGRN wire terminal (+) and bodyground (-)-
Repair open in the GRN wire b€-tween the ECT switch and theunder-hood luse/rel6v box,ls there battery voltageT
Turn the ignition switch OFF andcheck for continuity in the BLKwire between the ECT switch andbody ground.
Check for en ooen in the BLKwire between the ECT switchand body ground. ll th. wire isOK, check lor poor ground atG101.
ls there continuity?
Check the temperature gauge.
Does it read above normal?
View from wire side
GRN (+)

lgnition System
1. Inspect the electrodes and ceramic insulator for:
Spark Plug lnspection
. lmproper gap. Oil-fouling. Carbon deposits. Cracked centerelectrode insulatorDamagedgaskei
Burned or worn electrodes may be caused by:
. Advanced ignition timing. Loose spark plug
. Plug heat range too low. Insufficient cooling
Fouled plugs may be caused bY:. Retarded ignition liming. Oil in combustion chamber. Incorrect spark plug gap
. Plug heat range too high. Excessive rdling'low speed running
. Clogged air cleaner element. Deteriorated ignition coil or ignition wires
81881, 818C5 engine:
. Adjust the gap wjth a suitable gapping tool, and
replace the plug if the center electrode is rounded
as shown below.
Electrode Gap:
Standard 'l .1 ; r mm {0.043 ; ooa in)
E.
23-98
3.818C1 engine:
a Do not adjust the gap ol a platinum tip plug;
replace the spark plug it the center electrode is
rounded or if the gap is not within the specifi-
cattons.
Electrode Gap:
Standard I t.s-3., mm (0.051-3.oo4in)
5.
PLATINUM TIP
NOTE: Use onlv the spark plugs listed below
Spark plug
Bl88l engine:
NGK I ZFR5F-11
DENSO I KJ 16CR-111
818C1 engine:
NGK PFR6G-13
DENSO I PK2OPR-113
818C5 engine:
NGK PFR6G-I1
DENSO PK2OPR-111
Apply a small quantity ot anti-seize compound to the
plug threads belore installing the plugs.
Screw the plugs into the cylinder head tinger tight,
then torque them to 18 N.m (1 .8 kgf.m, 13lbf.ft).

)
Fan Motor Test
Disconnect the 2P connector from the fan motor.
Test the motor by connecting battery power to the
B terminal, and ground to the A termlnal.
lf the fan motor fails to run smoothly, replace it.
NOTE: The illustration shows the radiator fan.
Radiator Fan Switch Test
NOTE: Bleed air from the cooling system after installing
the radiator fan switch (see section 10)
1. Remove the radiator fan switch from the thermostat
housing.
2. Suspend the radiator fan switch in a container ol
coolanl as shown.
Heat the coolant and check engine coolant tempera
ture with a thermometer.
Check the continuity between the A and B terminals
according to the table:
23-119
Te rm Inal
Operatlon -------\
Tcmoerature ------
ON196. -203'F
(91" 95'C)
-5" 14.F i3" _8"C) ;*,*
than the temperature when
rt goes on.
SWITCH
OFF
B
-o
.-

Fans
- with
|------
See PowerDistribution,page 1G6.
;;;----13X3,5"
l,fP"[r s"" eo'""t
A/C -
E@
UNDER.HOODFUSE/RELAYBOXDistribution,
FUSE 56(coxoEr{sE8 faN}FUSE 57COOLING
204
FUSE/RELAY
2
(Not
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I Y C439sucrel ll PHoro"62rrr.
orl
*T'.I.
:-gg]gi Ji,'oio,,,
Seg PowerDistribution,page 10.6.c216y":':---______i
See PowerDbtribution,page lG1.
c2'16 1
BLKBEO
' POWERTRAIN ,
: or ENGINE, CONTROL ::,::A ,. ' MODULE ;(PCM or ECM) ,' PHOIA 77 (9A 99 |' PHofa 14a $q :!---- usA.----
COI{DENSERFANRELAYPHOTO 23
RADIATORFANRELAYHlofa 22
c215-----J
* '98199 [,4odels
cltl8LU/BLK
c9{t6
c206
c206
ffi-
".",".t"f
"oo' 6
i
v
To Splice onfacing page
c151
c155
BLU/BIK
BLU/ALK
CONDENSERFANMOTOR
RADIATORFANMOTOR
RADIATORFAN SWITCHClosed above93"C (200"F).
".:r
"'''
I see c,ornoarr< Distribution,
".,.f
','"i.
-lr:;--: PHafo 28
c155PHOTA 9
See GroundDistribution,page 14-2
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63
I. G151