1997 HONDA CIVIC For

EGT Switch
-f
Testing
Replace the thermostat if it is open at room temperature'
To test a closed thermostat:
1, Suspend the thermostat in a container of water as
shown.
THEBMOMETER
THERMOSTAT
Heat the water, and check the temperature with a
thermometer. Check the temperature at which the
thermostat first opens, and at which it is fully open
CAUTION: Do not let the thermometer touch the
bottom of the hot Gonlainel.
Measure lift height of the thermostat when fully
open.
STANDARD THERMOSTAT
Lift height above 8.0 mm (0.31 inl
Starts opsning: 169' - 176'F (76' - 80'Cl
Fully open: 194'F {90"C1
!'o
10-1 1
Testing
!!@ Romoving the EcT swhch while lhs engine
i!-ot can cause the coolant to sPray out, seriously scald-
ing you. Always lst th€ ongine and rediator cool down
before removing ihe ECT switch.
NOTE: Bleed air from the cooling system after installing
the ECT switch (see Page 10-7)
1. Remove the ECT switch from the thermostat hous-
ing (see Page'10-10).
2. Suspend the ECT switch in a container of water as
shown.
Heat the water, and check the temperature with a
thermometer.
CAUTION: Do not let the thermomoter touch tho
bottom of the hot container'
Measure the resistance between the A and B termi-
nals according to the table.4.
Terminal
Oo"rffi
swlTcH
ON196' - 203"F
(91" - 95'C)o--o
OFF
5" - 15'F {3" - 8'C)
lower than the temPera-
ture when t goes on

Water Pump
Inspection
't.
2.
Remove the timing belt (see section 6).
Turn the water pump pulley counterclockwise.Check that it tarns freely.
Check for signs of seal leakage.
NOTE: A small amount of "weeping,,from the bleedhole is normal.
Dl6Y5, Dl6Y7, D16Y8 engines:
BLEEDHOLE
B16A2 engine:
BLEED HOLE
BLEED HOLE
BLEED HOLE
10-14
Replacement
6x1.0mm
1.Remove the timing belt (see section 6).
Remove the water pump by removing five bolts.
NOTE: Inspect, repair and clean the O-ring grooveand mating surface with the cylinder block.
D16Y5, D16Y7, D16Y8 engines:
12 N.m {1.2 kgf.m, l0 x 1.25 mm8.7 lbt.ft) {4 N.m 14.5 kg{.m.33 tbt.ft)
Bl642 engine:
WATERPUMP
@;2
6x1.0mm12 N.m 11.2 kg{.m,8.7 tbf.ft)
O.RINGReplace.
3. Install the water pump in the reverse order of removal.
NOTE:
o Keep the O-ring in position when installing.. Clean the spilled engine coolant.
d
orp,
I

System Description
Vacuum Connections (cont'd)
D16Y8 engine ('96 sedan, '97 sedan: KA, KC modelsl:
PRIMARY HEATED OXYGEN SENSOR (PRIMARY HO2S.SENSOR SECONOARY HEATED OXYGEN SENSOR {SECONDARYHO2S, SENSOR 2lMANIFOLD ABSOLUTE PRESSUBE {MAPI SENSORENGINE COOLANT TEMPERATURE {ECTI SENSORINTAKE AIR TEMPERATUFE IIATI SENSORKNOCK SENSOR IKSICRANKSHAFT SPEED FLUCTUATION {CKFI SENSORIDLE AIR CONTROL IIACI VALVETHROTTLE EODY (T8)FUEL INJECTORFUEL FILTER
FUEL PRESSURE REGULATORFUEL PUMP {FPIFUEL TANKFUEL TANK EVAPORATIVE EMISSION IEVAP} VALVEAIR CLEANERRESONATORPOSITIVE CRANKCASE VENTILATION {PCV} VALVEEVAPORATIVE EMISSION IEVAP) PURGE CONTROLSOLENOID VALVEEVAPORATIVE EMISSION IEVAPI CONTROL CANISTEREVAFORATIVE EMISSION IEVAP} TWO WAY VALVETHREE WAY CATALYTIC CONVERTER (TWC'
{M/T}
i@l: F@i
HiiFl
(A/T)
I ENGINE I
I coor-rruri
i@ i+ il/A. nfi |(Or)l /U[ |)l#t,/,6
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t;
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@@@
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@@@(D
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11-22

System Connectors [Fuel Pumpl
'95 - 98 models, '99 - 00 Dl6Y5 engine with M/T:
ffi
c565
E
c792*r,.'5c793|.,.s
*1r USA mod€l'2: A/T {O16Y7, D16Y8 ensine}13: CVT {O16Y5 ensin€l*4: A/T ind D16Y7 .ngane*5: ExceFt A/T end D16Y7 engine'6: A/T lDl6Y8 enginel*7: CvT (Dl6Y5 enginoland 016Yg engine'8: ,96 Dl6YB engine {coupe),'97 Dl6Y8 sngine
{coupe: sll models, s€d.nr KL modell,'98 Dl5Y5.ngine,'98 D16Y7 engine,'99 - OO Dl6Y5 (M/Tl enginer9: D16Y5 onginet10: M/T {D15Y5 ensinelr1t: ExceDt M/T (D16Y5 engine)tl2: D16Y5, Dl6Yg engine*13: Dl6Y8 enginer14: D16Y7 engine*15:'97 Dl6Y7 ensine {coupe: KL model, sodan:
KL (LX) modeu,'98 Dt6Y7 engine
NOTE: . Different wires with the same color have been given a number suffix to distinguish them (for example' YEUBLK1
and YEVBLK' are not the samel.
. O: Related to Fuel and Emissions System'
. - Connector with male terminals (dou ble outline): View f rom term inal side
- Connector with female terminals (single outline): View from wire side
c7931...15
ffi
1 1-51

Cl0,r{C.nadal
r'fr]
l6mrrrnru IElilrwA----llTltHtBtu__l
:lo.
l'lrl
lrl.l
c109..
r'frtr
16lonl -l
l@LYEUBLK' Ibfgl-rcgtu'---l
c102
r'Trtt
l6lwtr,eED' _-l
E|BFIvBLK -l
l6lga-tnEcl--l
c105
Etr
c106
ffi
c114
fr
c108
ffi
c107
ffi
Bffiffi
c113*1
ffiffi
,DGRN/BLK'(9LT GRN?BLU]38
NOTE: . Different wires with the same color have been given a number suffix to distinguish them (for 6xample, YEUBLK1
and YEUBLK'are not the same).
. O: Related to Fuel and Emissions Syst€m'
. - Connector with male terminals (double outline): View from terminal side
- Connector with female terminals (single outline): View trom wire side
(cont'd)
11-53
c1a2.r
fr

c1t7
r'ffi]
f'TBLir-llO BLX,YEI Il6lEtu^tHr__-l
c125
ffi
16lwrrin+o' tliSlcFN/BLK I16T8LK^'Er-- l
-.,IBaK,r /Hr. I
c141*'
___l:t_
l-lrl
I ' LT GRNA/VHT I
f€,]-BLK,rEf-__l
cl16c1t5cl11
c128.'
ffi
1618r-uf/EL-_]
161-cfl,avHr -l
cl45rrc
Ft_
l-,T,ITd
t_-Ttli I
c127*'
fr
IFFEc'--__l
ftlwHn-'_l
-c,1*
t-El-rl1 I 2l 3l
l.l
'ul
16lvvrrr/BtK---.llglcnN/BrK, IlO YEvBru I16r lsrK' IET- --
f+plr-, -_l
c118"
ffi
trl-clrl---]latl IBLU, I
c126*'
ffi
fOTwHn-_-llOlREo. I
:.trn
.EL
[tT,l.l
v
I i wHl/8tK IlETc RNi BLF--l
ET-YtrrrruBiu-__-l
q]54't
r,f,"|
I i IBLK4/VHT IlOlsLK I
IO LGRN/RED I
c112
fr
c120
tdl cnN/YEt--l
NOTE: . Different wires with the same color have been given a number suffix to distinguish them (for example, YEUBLK'
and YEUBLIC are not the same).
. O: Belated to Fuel and Emissions System'
. - Connector with male terminals (double outline): View from terminal side
- Connector with female terminals (single outlins): View from wire side {cont'd}
c121*'
ffi
c123
ffi
c1a0rt
fr
l6lgrf,---_-lIOIREB I
c13!,.f
E
c122
iYEUGFNoBLU5REO!8L(,
YEL'98tu
510BLK/YEL
c351
1 1-55

c101c102
f,ftl
I. WHT/FED. I| ? lEFN/8LK' I
f3TBr--/BEo-l
c107
EE
c1o4 c104'1 lcanadal
ffi r'ftl
l3l.l
c105
ffi
c106
ffi
c113*!
r=1
,'l\
\2
li GRN. I
ftELiJ - -l
c108
ffi
c112
ffi
oGRNELKIoELUT
31I
Different wires with the same coror nave been given a number suffix to distinguish them {for example. YEUBLKl
and YEUBLK' are not the same).NOTE: o
a
O: Related to Fuel and Emissions System
- Connector with male terminals (double outline): View from terminal side
- Connector with female terminals (single outline): View from wire side
(cont'd)
11-57
fBLI(YEL6WHT/BLU
BLK'YEVGflN
3YEVBEDIBLU'4.BRN/8LK'BLK,A/VHT
.alYEUBLKil0BLKYEL

c114
ffi
c109
r'ff;t
Flo-'u Il! veugLx' I
ftFwatu;'--l
c123
ffi
cl18 {A/T}
F lrl
IOIGFN' I
16l Barr-- - l
cl17
r'ftr
fdl'.,c---_ll? BLKtEt Ib]-Br.-^^,Hr-_-l
cl24 (A/Tl
fr
lTlzRN,tsril I
l6l-YtL, ---l
lolFED/wHr I
fd-cRN/8tK'_]l
cl28lA/T)
F l,l
IC ISLU/YEL I
161-Grr.,*1/Hl I
Gt54*,
F1Eh
l'l3LlJ
l6ElKl,,/Hr-l
I6TBLK -_l
IO LGRN/ RED I
Different wires with the same color have been given a number suffix to distinguish them (for example, YEUBLK1
and YEUBLK' are not the same).
O: Related to Fuel and Emissions System.
- Connector with male terminals (double outline): View from terminal side
- Connector with female terminals (single outline): View from wire side
c141r16
ffi
lO LT GBN,.VVHT I
161-BIK/YEL-_--l
c121 |AFI
ffi
16lwHr--llOlREp I
cl26 (A/Tl
fr
fol;nrr-_-llOlREo. I
c125
ffi
l3l.l
lTltHr/R$' -l
loiiED/vEr--lbfBaK/vEL- l
f!]BLX,1,,iHT'-l
NOTE: o
aL
tYEUGNN8LU5oBEF
@CRN:BIK3YELl9BLU
5108LX]"/E!
1 1-59