1998 HONDA INTEGRA relay

Fans
- Without A/C
UNDER-HOODFUSE/RELAYBOX
r--------UNDER-DASHFUSE/RELAYBOXFUSE 57cooLrfic FAx2oa
a4 Distribution,
_ ' Cg(F
ll Pase 106'BLK,YEL I
. A """?t'3"---------JI Soe Powgri------{' Distribution,
I page 10-6./\-_--_--
'I
GBN
RADIATORFANRELAYP|1OTO 22
: l__
ru::
.i
-d*"^
ffil u
(Not Used)---?f;---------==:
I (Nor Used)BLUT'EL
f
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i*'Er t: 11,c402 i
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:ilt; ".r,".o I
i ,, I "oo.: (. s) x (c4oe -)
l---rNTl:,oll,ffIE '"
: Used) I CoNTROL' I MODULE
: | (PcM or EcM). I PHA|O 77 (98 99):_----- PHOTO 140 taAl.,
)8 '99 Models
(Not Used)
?i-------=
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. I .oo,PF.IA/c
Lf l"r,i"r,B%
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24
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t9
GBN
See GroundDistribution,page 14-2.
I
I
_l
, r27) A C408
i r-;--, I iiiir o
; I FAN. I control;t, L----
I'irl RAOIATORI t I FANswtrcH
l{-cl 9J3?39,"-"e e3 c (2oo F)
1 Y c11r
"*l
Orr< See GroundI Distribution,BLK
L/-4
eaee 14.
1FJ::.,"
usA ---.
* '98
._____.-'.1!;;6i-
PHO|O 4
63-2

Fans (cont'd)
- How the Gircuit Works
When the ignition switch is in ON (ll), voltage is
applied to the coils of the radiator fan relay and the
condenser fan relay (with A,/C) through fuse 17.
Whenever a ground is provided to the radiator fan
relay and condenser fan relay, the relays are
energized, turning on the radiator fan motor and
condenser fan motor. The relays can be grounded
by the radiator fan switch, engine or powertrain
control module (ECM or PCM) (USA), or the A,/C
and heater lan switches via the A'lC pressure switch
and the A,/C lhermostat.
A,/C Thermostat
The A,/C thermostat is located on the evaporator
housing. The A/C thermostat turns oft the A/C
compressor clutch it the temperature at the
evaporator goes below 3'C (37"F). This prevents
condensalion from freezing on the evaporator fins
and blocking the air delivery into the passenger
compartment. lt the temperature goes below 3'C
(37'F) turning off the A"/C thermostat, and the
BLU/RED wire at the A,/C diode was the only wire
providing ground to the condenser and radiator
fan relays (A,/C switch on, heater fans switch on,
radiator fan switch open, and ECM or PCM fan
controi output not grounded), the relay will
deenergize removing voltage from the condenser
and radiator fan motors causing them to stop
running.
A,/C Pressure Switch
The AJC oressure switch is located in the condenser
outlet line where refrigerant is in a high
temperature/high pressure liquid state. The A,/C
switch turns off the A,/C compressor clutch if it
senses abnormally high or low pressure. lf the A'lC
pressure switch opens, and the BLU/RED wire at
the A/C diode was the only wire providing ground
to the condenser and radiator fan relays (L/C switch
on, heater fans switch on, radiator lan switch open'
and ECM or PCM fan control output not grounded),
the relay will deenergize removing voltage from the
condenser and radiator fan motors causing them to
stop running.
A./C Diode
This diode orevents the radiator fan switch f rom
grounding the "A'lC ON" input to the engine or
powertrain control module (ECM or PCM).
Refer to the Service Manual (Section 23, Electrical)
for specific tests or troubleshooting procedures.
63-3

H"ar ffndow Defogger
---.I UNDER.
i-I,;.;;lH8B'J i
illk.**"llieF iL-Ja---J PEoro 21 L
I DASH
i FUSE/I RELAYI Box
FUSE 16NEAR DEFROSI€B NEIAY7.54
__J PHO|O sA
[._
See Dashand ConsoleLights
Y
"ao,"a" I
--g-,1 cser
c2172
ALK/BLU
'T 9#.'9,,BTruBLU
i
"r'u"au !
@cREARwtNDowDEFOGGERswtTcH
See PowerDistribution,pago 1G6.
c422
UNDER-DASHFUSE/RELAYBOX
S€e GroundDistribution,page 14-5.
:ffilfi$Eijc914Hatchback t1
-----l".* o"nf, L----
f ;fl,:" "onn"",o., -",
I not be presenl in allcars.)
BL|(GRN
I
I
I "u.o
l-lFl REARI .5 | WTNDOW
lll
oEFoGGER
,.^f "tt'
"";',u'," i il{:{'}Fl
l'*'**T.lJ: PHoTo 102
c753
1 REARI WINDOW
I DEFOGGERIJ BLIIGRNc771
1
BLK/GFN
rII
G?7.1 L
".of,or"i:
BU( ltGFNA c516
'." ! 1]ll'.llGRN ll pre6e
2 J C525BL|! ll P,lorc
neof czss
msi
lllo'Y c771
BLK
BLK
cs16(ln-line connectorlmay not bepresent in allcars.)
"..1
t
REARwtNDow
swlTcHLIGT'Toila_
ONINDICA.TOR
ry$:F*
::";,=.4
-
: :
-L[; - -
T
- - - - -
I
iiffit]lffi**'
BLKBLU
64

- How the Circuit Works
Voltage is applied at all times through f use 50 to
the rear window defogger relay. With the ignition
swrtch in ON (ll), voltage is applied through luse
16 to the rear window defogger relay and the
defogger ON indicator.
When you turn the rear window defogger switch to
ON, a path to ground is provided for the rear
window defogger relay and the defogger ON
indicator through the integrated control unit. The
defogger ON indicator light comes on and the rear
window detogger relay contacts close. Voltage is
applied to the detogger grid on the surface of the
rear window and the grid heats the rear window to
remove any fog lrom the glass.
A timer in the integrated control unit will automatically
tum off the defogger atter 20 to 30 minutes.
Refer to the Service Manual (Section 23, Electrical)
for specific tests or troubleshooting procedures.
64-1

Integrated Control Unit
see Rear @Window See Wipef/Washer |-'l----
, See Ground' Distribution,
: pase 14-5.
c439
\
\
I
I
t
I
I
WHT/BLU
c438
YEUREO
'r9,x3
*t
Y
SeeCharoinoSyste'm '
--.-,
See Wiper^Vasher
See EngineOil PressureIndicatorLight
rr{See GroundDishibution,page 14-5.
Y
v---!G401
Window See Wioef/Washer f -'l-- - -'l UNDER-HOODDefogser ,-- | I rUS: +e IFUSE/RELAY
I I I llg:-i***'
1'11f ;'.il::ll ^-.wlhcombined utr?i;,'",,
I I I :,8:[il; * o"' ,n", ",o I
!!!i.t@..!.,*,*..
i
-T--
T-[-- :-;:=::::::{----1-- - - - - - - - -
7'
illli{ry;a';:i {iii:*l i
i, tr---I".!,.*, i, Ljiri'dt'l-t{-:--h i:tf{#;r {
il
L-
See Rear
Defogger
FUSE 26 ,
FFAWASiIEB ' See power
' page 10-5. 6
RearWindowDefoggerTimerCircult
IntermftentWiper RelayCircult
Englns OilPrgssureIndicatolFlasherClrcuit
70
!..

NOTE: Fuse 31 is HOT with lgnition Switch in START (lll) and clutch pedal depressed or A./T Gear Selector
in PARK (P) or NEUTRAL (N), see Starting System, pages 21 and 21-1.
See BrakeSystemlndicatorI i^ht
c504PHO|O 62
SBe Headlight
FUSE 31STAATEAS|GTAL7.54uee
Switch,page 100-'1. I
FUSE 30usrnu EtlTUGT'Tl|?.5A
S€e BrakoSystemlndicatorUqht
INTEGBATEDCONTROL UNITPHOfO 62
UNDER-OASHFUSE/RELAYBOX
SeeCeilingLight
c422
DRIVER'S DOORswtTcHClosed withdoor open.
PHoto 88 (sedan)
70-1

Engine Oil Pressure Indicator Light
lgnition input
L - - - - - *---- ---- --J14 I' Ca14See GroundDistribution,page l4-5.
L------
See Ground
r------- ----__J_--___J
| .---- . to Y cssi
i i vor-mce nEGuLAroR i f,t"t5l|otot ".u"., f
ono'" "
! !i------li il;ffi,r?rl$
i lL--j---.I ! 1*n"'o.u
I L___L___.,i ".,,".u I| 3 lf cile ol csss
I
UNDER-DASHFUSE/RELAYBOX
Ses PovrerDistribution,p,age 1G5.
wHr/BLU | !-;T-------1.;T
c't27 !
-
f+ see IndicatorsPHO|O 36 | I
| ,A low er,rcrxeI { 6l (xL PfiESSURE
s::t.. i Y l.x8i.."i'o'ttr-r
i ,,,1 lr=r,l
L-:g-------
Z J-C.tZz ! H SBe Indicators
GAUGEASSEMBLY
""'.,[r,o_,._
i
eh"#fiFs$.
11
c438
c452
r(RS 4)
YEURED
6
"'"1[,*.,
"rr"ao
I
'-"-[':,':"
l-rlFl ENGTNE OtLI 1 I PRESSURE
l--Il,8yjl?h:^,
Englne Oil Pr6guroIndlcator FlasherClrcull
72
o--< Distrtbution,

Low Fuel Indicator Light
!
--------Jc551
See PowerDistribution,page 10-5.
See Gauges, I ASSEMBLYIndicators
LOW FUELINDICATORLIGHT
lrnl
FUSE 25ffETEF7,5ASee PowerDistribution,page 10-5.
I
c505
UNOER.DASHFUSE/RELAYBOX
D4
L-3
10
3c51 l
Thermlstor
SeeGaugesL-------
FUELTANKUNIT
1