G401 HONDA INTEGRA 1998 4.G Service Manual

Circuit Diagram
FRONTPASSENGEF'SAJRBAGINFLATOR
f\4r
tlGRN GRN(YEL) (BLi.,'YEL)
I
G701
IGNITIONswtTcH
SRS INOICATOF CIBCUIT(ln the gauge assembly)
8LU
I
I
siEi'
IGRN
GRN(8RN)
I?
RNAVHT BRII/WHTlltl\---7 \*7
ECM SERVICECHECKcoirNEcTon
WHT/BLK +WHT
t"'
DATA LINKCONNECTOF(DLC)(r6P)
UNDEF-DASHFUSURELAY80x
ELKRED
J
PGM-FImain r€lay
MEIiIORY ERASEr2pt SIGNAL (MESIcoNNECToR (2P)
SRS UNIT TERMJNALS
BLX
G201G401
-NOER.NOOD FUSE/RELAY BOX
SRS INDICATORLIGHT 0.4W)
10 14 1 13 6 7(VA) 3(VB)SRS UNIT16 17 15 9188
DRIVER'SAJFBAGINFLATOR
1367I
10,/1,/1314151718
lerminal sde o{ male tefinnals
23-280
\'

Ground-to-Components I ndex
NOTE: All ground wires are BLK unless otherwise noted.
GroundPageComponents or Circuit Grounded
Battery (BLIVYEL)
--t'I Valve cover (BRN)
G101t.+
and
14-1
Daia link connector (BRN/BLK), Engine or powertrain controt module (pct and pG2
are BLK; LG1 and LG2 are BRN/BLR, IAB controt solenoid valve (GS-B),
lmmobilizer receiver unit ('00 Model) (BRN/BLR, PGM-Ft main retay, Radiator fan
switch, Transmission control module ('98.99 Models with MD (2 BRN/BLK wires),
Vehicle speed sensor, WEC pressure switch (GS-R, Type-R)
Shielding between the ECM or PCM and these components (all have BRAIDED wires):
CKF sensor, Primary and secondary heated oxygen sensors, Knock sensor (GS-R,
Type-R), TDC/CKP/CYP sensor
Shielding between the TCM ('98-'99 Models) or PCM ('00 Model) and these components(all have BRAIDED wires): Countershaft speed sensor, Mainshaft speed sensor
G1s1 ii Condenser fan motor
Brake fluid level switch, Cruise control actuator, Left front parking/turn signal light, Left
front side marker light, Left headlight, Power steering pressure switch (USA), Rear
window washer motor (Hatchback), Windshield washer motor, Windshield wiper motor
14-3
Blower motor relay, ELD unit, Badiator fan motor, Right front parking/turn signal light,
Right front side marker light, Right headlight.....plus everything grounded through G401
ABS fail-safe relay, ABS pump motor
G40114-4
ano
l4-c
A,/T gear position switch, Cigarette lighter, Clutch switch (M,/T), Ctock, Ctutch interlock
switch (MfD, Combination wiper switch (2 wires), Cruise control main switch, Cruise
control unit, Dash lights brightness controller, Data link connector, Daytime running
lights control unit (Canada), Front passenger's door key cylinder switch, Frontpassenger's door lock switch, Gauge assembly (2 wires), Glove box light, Heater
control panel, Heater tan switch, lgnition key switch, Integrated control unit, Interlock
control unit (AfI), Maintenance reminder unit, Mode control motor, Moonroof relay,
Moonroof switch, Parking pin switch (AfD, Power window relay, Rear window defogger
switch, Service check connector, Turn signal/hazard relay.....plus everything grounded
throuoh G201
Driver's door key cylinder switch, Driver's door lock actuator, Drivels door lock switch,Driver's seat belt switch, Fuel pump (BLI(/WHT), Fuel tank unit (BLI(/WHT), power doorlock control unit, Power mirror switch, Power window master switch (2 wires)
Hatch key cylinder switch, Hatch latch switch, Hatch opener actuator, Hatch ooener
switch, Left and right back-up lights, Left and right brake light/taillights, Lett and right
rear parking lights, Left and right rear turn signal lights, License plate lights, power
antenna motor, Trailer lighting connector..... plus everything grounded through G751
6-6
'14-8G503
(Sedan)
High mount brake light, Left and right back-up lights, Lett and right inner brake tighv
taillights, Left and right outer brake light/taittights, Left and right rear parking tights, Leftand right rear turn signal lights, License plate lights, Rear window detogger, Trailer
lighting connector, Trunk latch switch

Ground Distributior (cont'd)
- G401
CLUTCHswtTcHPage 34-3
tl
tl
'l**
A/T GEARPOStTTONSWITCH
139""i#;3a, cLUrcH
ig.ii,oor.--" TNTERLOCK
89, 138 (rss- 99t lwlTcHand 138-1 { 00) Page zl-lPHO|OTo PHOfa 130
r--1 r--1
lttl
ttlll-J t--J
| 2 rc428'Y 9:t:,2." I
ttI,L
SERVICE INTERLOCKCHECK CONTROLCONNECTOR UNITPages Page 13823-6 ( 98-99), PHoro5z24,6 ('00), i--t
iifiii;"' ! !PHOTO 76 L__J'I*- 'l*"
I -
I
-l
ll- o------- o
FRONTPASSENGER'S .-. A,/T -..DOOR ;KEY FRONT ' PARK PtN 'CYLINDER PASSENGER'S ' SWITCHSWITCH OOOR LOCK ' Paqe 138 :Paqe 130 SWITCH I (ge ggt or ior130-2 Page t30 ; 138-1 C00) ,PHafa o6 or 130-2 | pHaro 12a
!.--.! r--1 , r--1 :I | | | ;l | :
| | I | ;t | ;tT' t^-.--i^- , LrJ
"I ^^^-
z
l
t'or' : tY'"*u"" :'Yk91i t ' I'zi :a';"'" I : I
I I :lErl
"1i,.
| .
NOTE: Wires shown without color codes are black.
c403
STEERINGLOCKPage 73'i!Y-', PAIA,LT$
| . i ;;":,;i;
;p,'nron i ffi."ro*Switch I Page 23-7
!'---'' i !i:; iSii'
);
DAYTIMERUNNINGLIGHTSCONTROLUNITPage 110-9
tl
tl
't Y c41(
Canada
\YTIME
Page
I
I12 Y C406
c41
o
a
Llrri.i
i'#!"..,'lgl::""
14-4

* = '98-'99 f,4odels
CRUISECONTROLMAINswrTcHPage 34
GAUGEASSEMBLYPages 80-1, 80 2,81-1, and Bg
REARwtNDowDEFOGGERSWITCHPage 64
DASHLIGHTS
Page 114
BRIGHTNESS RELAYCONTROLLER Page 122
MOONROOF
I
IJc662L-------J
CIGARETTELIGHTERPages 114-1and 155
tl
All
. - - except -.,RS
: GLOVE ;, BOX' LIGHTI Page 114
'll
:l t:
MOONROOFswtTcHPage 122
tl
ll
2 Y C664
I
:F.
Oerminals5-10)c661PHOfA 58
TURNSIGiIAU POWERHAZARD WINDOWRELAY RELAY INTEGRATEDpaoes 11G2 Pages 120 CONTROLani tt0-+ and120-2 UN|T?HOTO'O PHOTO@ PNO|O 62
r-.1r--1|.--1
c45o :ll
------Jc439
COMBINATIONWIPER SWITCHPages 9l-'l
r--1
tl
llL-.J
5 Y C437
-l
UNDER-OASIIFUSE/BELAYBOX
tl
tl
tl
ll
c926 1Y C92s 14
I coHuecron ' : Page 92, (oPTtoN),(oPnoN);,r--1
i sYcrso lll I
G401
14-5

Automatic Transmission Controls
- '98-'99 Models (cont'd)
YEUatu
-ry
UNDER-DASHFUSE/RELAYBOX
SERVICE CHECK CONNECTOR
1l[----- -i-f c+os
"""t"'
I see
-^
|.EE< ABS,
i-1
Ti:
t':,;"'1...,
*";'1".,,
- sRS
""1
#t*r-^:----- ENGTNE r--:-I TRANSM|SS|ON I rI r*ib rsis, I coNTRoLl r"sb'sr I coNTRoL I i
fl i$yjHlr'!;f#n",!ffiii:' \i- !- G401- PHOTO 56
r)J-1
i*J itTffe.- ir:";-
- - - -
s:I-
- - - -
;;; I HffilEr''". i T r.s:;
- -
II voliage l{ECM) | input
I w,?- | i.o, o,, L :t - - - - - jrfl - - - - - Si
j hfiY:t'
".
i 1-%** i
l_: f, "o'oror c410 4tr-------E[c4ts 17tr' c420 LJ__HSIJ
:ii t Hb ^f'""'* ! "."".* :;;! !
';l "lz*"
-
-[ ;;
"*i*'*i[Try[",".
""."]1,**^ "'""'"!
*u*u''o
ft_ _ _____+___ _ _'lfi g;to,..,. o"n,"J, f t",",,

Automatic Transmission Controls
- '00 Model (cont'd)
[---;""'.f
-lc+os 141' c4o8 LJ-:*:IJ
|
:t
, ;:".1
*"",",1 "**-
I
-.11,[t*r'""
I .l ,.,1,","" .J,o*". i
r*ru;l
i.";-
- - -
Is"*
- - - - -
Fsil
- - -
;; I i.l{T'Fil^'- i I ;;
- -
I Ui3"*I voltage Inout
L js!'- - - - - - d": - - - - - 3t - - - - - roql j Hili:
i i-Ti*.*,*,, i F"H*i,'ll-------zrI_------16'rc4os 14tr' c408 LJ_j*::J
:tt, I ".ou.*l I I
r rii ^ r "."-,. r ^""",. r ". ::[ 9#3-
**[
[ [ X"., !r*g+;l"f-----
t
't
l;:,.il*[;,;
""T1",,,""
! ! !i;T-"{_
___-}.[1dnw'"t*il *"*-l "'o*n'l i'I---L-
I I NLi::--::::-:=a-*$$ti
.l_______l ",,, ,l ",,.
'r "*'
I_ITI ENGINE COOLANT
iddirioil I Jr l,.g:tilu;SENSOR lJJal PHora 17
c106
GFN/BLK
SERVICE CHECK CONNECTORPHOIO 76
-"^,:,[
.:
"{
'T[_:'*' "..1
;*liil, lFffi*'" I
c405
BLI
BLK I
I'
See GroundDistribution,pages 14-4and 14-5.
V
I ..
G401
39-6

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
!..

See Dash andConsole Lights
GAUGEASSEMBLY
(cont'd)
80-1
CRUISEcor{TRoL'NDICATONLIGHT
TcrurFlI cofnot I
r.ow ENGTNE IOIL PRESSURE IINDICATORLIGH'
I\YrlL:J
See Gauges,I'lT Gear PositionIndicator
"ff
I
See CrlControl
See GroundDistribution,page 14'5.
Y
I
.-t
G401PHO|O 56
T
li
'"1
See PGM'FI See Engineoil PressurelndicalorLight
* = '98-'99 Modets
SeeMaintenanceReminderLight
\. I [,'d['*"' I il]i"fl".,B* I
i,1_* =i^ .l
'*f----l- :{

Wiperffasher (contd)
- How the Circuit Works
When the ignition switch is in ON (ll) or START (lll),
battery voltage is applied to lhe windshield
wiper/washer switch, and the windshield wiper
motor.
Low Speed
When you turn the wiper switch to LO, the wiper
motor's low speed winding is grounded through the
BLU wire and the LO speed contacts of the wiper
switch at G401, and the wipers run at low speed.
ParUOfi
When you turn the wiper switch OFF, the integrated
control unit (PARK input) grounds the wiper motor
through the BLUMHT wire. The cam switch on the
motor signals the integrated control unit that the
wipers are in the PARK position; the control unit
then removes ground from the motor, and the
wipers stop in the PARK position.
High Speed
When the wiper switch is in Hl, the high speed
windings ol the windshield wiper motor are
grounded through the BLUI/EL wire and the Hl
contacts of the wiper switch at G401 , and the
wipers run at high speed.
Intermittent
When the wiper switch is in lNT, battery voltage is
applied through the YEUBLU wire to the integrated
control unit (lntermittent wiper ON input). The
integrated control unit (lntermittenvPark Wiper
Control) grounds the low speed windings of the
wiper motor and the wipers make a single sweep
every few seconds (See Low Speed above). When
the wiper returns to the PARK position, the park
switch applies battery voltage through the
BLUMHT wire to the integrated control unit (PARK
input), and the wipers stop in the PARK position.
91-2
Mist
When you pull the wiper switch down to MIST
position, the high speed windings of the wiper motor
are grounded through the BLU//EL wire and the
closed contacts of the mist switch at G401, and the
wipers make one pass across the windshield at high
speed. The PABKOFF tunction then takes over and
the wrpers stop in the PARK position.
Washer
When you pull the wiper switch toward you to turn on
the washer switch, battery voltage is applied to the
washer motor. The motor pumps fluid onto the
windshield until you release the lever. On models
with combined wiper/washer operation (Canada), the
integrated control unit (windshield washer ON input)
senses power al the BLI(GRN wire terminal and
runs the washer motor whenever the wioers run.
Reter to the Service irlanual (Section 23, Electrical)
for specific tests or troubleshooting procedures.

Security System
NOTE: Wires that look like this --::= are part of the optional Security System harness installed betlveen
factory harness connectors.
!-l-'*;;--
-----f.-u'?;l
HBB'J' !--T-'u-"-"-13X3"'*-| ) Ho-BN.srop ) B..l\-cj^qp I FUSE/ | ) Flg!!!p I FusE,| 1."^ | lTl"'", I RELAY I a ;'lx'" I RELAY| {--------------- l'* | Box I l -^ lBox
LJ--------.J4---------9----JP4oto21 L-Ja----JPHoro,3"\W27**^ -"hlT'jZn8:,*[:*ift :.1::t*'
seepowerpage 1o-8. a+ Distributjon,See Power Dislribulion. rZ)z----- I page 104.page 10-9.
''"' "t' 1.*"
*', "r:l-
- - - - - -,C **
, f]3,"0u, "1,f ";"3" *",J"11-------;'ff ;;;"
[F=]F;"#,.. kfl
t"ffBr+T'
EilHr{" E
mli
"."".:X-:-S]""'
"T['*-
ll ll
ffi'-"*FL_____r*F_*l
l^y^
c4s1 wnr I t"o'o 'o tn"r ".u | | ".. | | *n' ' '
i Horn control Security Battery lgnition Antenna Ia Horn control Security Battery lgnilion Antenna I
I Drsarm/varet rq indicator 'nPut \
: Ground switch input r.JllXi'lJ;,L control I! Ground switch input s'ivitcn inprlt IL------; ------Jtoy--T|f- -----,;]1
BrK ll rrGRNll LrBLU ll7 Yi- -;-lt- - - - - - -;-:t c426
"-l ,"":l :::lb.i[ri?n'a'fl:. r..rn?.,n| 'eru I Kev Reminders rRANsMlrrER
r

c4so z:L cqgz
:l-il*
",, I
ttu' . *'*'i'f, F;l'o"
rh d.,til i;-fr H{jfJ. I i{",;::*
Ed'"""" LliCir'l':i
":it*t*'
"t--,i[;""
I See Ground Distributron.I pages 14-4 and 14 5.
-.1
I
I
"..1
133
G401