key HONDA CIVIC 2000 6.G Repair Manual

Ground-to-Components I ndex
f.,lONOTE: All ground wires are BLK unless otherwise noted.
GroundPageComponents or Circuit Grounded
Battery (BLKYEL)
Steering pump bracket
t+-rg ITransmission housing
l
G101
(-1)
G101
(-2)
14-2
and
14-3
ano
14-1
Powertrain or engine control module (PG1 and pG2 are BLK: LG1 and LG2 are
BRN/BLK), EGR control solenoid valve (CW, EGR valve and lift sensor (Dt6yS enginewith M,/T), Engine coolant temperature switch, pGM-Fl main relay, power steeringpressure switch (USA), Primary HO2S (D16Y5 engine with l\/,/T), Vehicle speed sensor,VTEC pressure switch (D16Y5/D16Y8 engines), CKF sensor (BRN/BLK), Transmission
control module (CYf) (Pc1 is BLK: LG1 is BRN/BLK)
Shielding betvveen the PCM or ECM and these components (all have BRN/BLK wires):
CKF sensor, TDC/CKP/CYP sensor. Primary and secondary heated oxygen sensors.
Knock sensor (CWDl6YB engine), Mainshaft speed sensor (AiT except CVT),
I Countershaft speed sensor (A/T except CVf)
Shielding between the TCM and these components (CVT) (all have BRN/BLK wires):
Drive pulley speed sensor, Driven pulley speed sensor, Secondary gear shaft
speed sensor
Powertrain or engine control module (PG1 and pG2 are BLK; LG1 and LGz are
BRN/BLK), EGR control solenoid valve (D16Y5 engine), EGR valve (Dt685), Engine
coolant temperature switch, Fuel pressure regulator shut-off solenoid valve (D1685),
PGM-FI main relay, Power steering pressure switch (USA), Vehicle speed sensor, VTECpressure switch (All except D16Y7 engine), CKF sensor (A

except 81642) (BRN/BLK)
Shielding between the PCM or ECM and these components (all have BRN/BLK wires):
CKF sensor, TDC/CKP/CYP sensor, Primary and secondary heated oxygen sensors,
Knock sensor (All except D16Y7 engine), i/ainshaft speed sensor (Arf except CW),
Countershaft speed sensor (A,/T except CVf), Drive pulley speed sensor (CW), Drivenpulley speed sensor (CVT), Secondary gear shaft speed sensor (CVf)
I Badiator fan motor, Right front parking/turn signat tight, Right headtight
G20214-4I Cruise control actuator, Left front parking/turn signal lights, Left headlight, Rear window
I washer motor, Windshield washer motor, Washer fluid level switch (,99-'00 Canada)
G401| +-o
and
14-7
Accessory power socket, Brake fluid level switch, Clutch interlock switch (M/T), Clutchswitch (lillT with cruise/D16Y5 engine with MfD, Combination wiper switch (Z wires),
Cruise control main switch, Cruise control unit, Dash lights brightness controller, Data
link connector, Daytime running lights control unit (Canada), Gauge assembly, Horn('96-'97 models), Integrated control unit, Interlock control unit (ArI), Keyless door lock
control unit ('99-'00 models with keyless), Moonroof close and open relays, Moonroof
switch, Park pin switch (A/r), Power window relay, Rear window defogger relay, Rear
window defogger switch ('96-'98 models), Steering lock, Stereo radio tuner (,96-,98
USA: LX, EX, and HX), Turn signal/hazard relay, Windshield wiper motor.....plus
everything grounded through G402
6-6

Ground
G402
Components or Clrcult Grounded
Arr gear position switch, ABS control unit (3 wires), Blower motor high relay ('99-'00
models), Blower motor relay, ELD unit, Heater Jan switch ('96-'98 models), Heater
control panel, Mode control motor ('96.98 models), Power transistor ('99-'00 models),
Service check connector....plus everything grounded through G401
| 14-13 | ABS pump motor
1l-9 i Stereo radio tuner ('96-'98 models), Audio unit ('99-'00 models)
Drivsr's door lock actuator, Driver's door lock switch, Drivefs window motor' Left mirror
defogger, Pow€r window master switch (2 wires), Power door lock control unit (all
except '99-'00 with keyless), Power mirror switch
G55214-9 i Driver's s€at belt switch, Fuel pump, Fuel tank unit, Right mkror defogger
G601
(Hatch-
back)
14-12 iLeft and right back-up lights, Left and right brake lighvtail lights, Lefl and right rear
turn signal lights, Left and right tail lights....plus eveMhing grounded through G761
G601 I 14-10
(All Coupesl
ano
(96198
S6dans)
High mount brake light, Left and right back-up lights, Left and right inner brake lighv
taiilights, Lett and right license plale lights, Lett and right outer brak€ lighvtail lights'
Left and right rear turn signal lights, Rear window deJogger, Trunk latch switch
G601
(99-'oo
Sedans)
G602
('ss-'00
Sedans)
G761
(Hatch-
back)
G771
(Hatch-
back)
14-11
14-12 i
High mount brake light, Left and right back-up lights, Left and right brake lighvouter
taillights, Left and right inner taillight, Left and right rear turn signal light' Rear window
deJogger (GX), Trunk latch switch
Window antenna coil
Hatch latch switch ('98-'00 models), High mount brake light' Left and right license plate
lights, Rear window wiper motor...plus everything grounded through G601
Rear window defogger
14-13 i SRS unit (2 wires)
*1 = All '96-98 models €xcept Dl685, '99100 D16Y5 with M/T*2 = '98 D1685, all '99-'00 models except Dl6Y5 with M/T
e7

A/T
"ar"r"f
-L
I
I
\
FUSE 14(cRu€€ colrTnol)((Ef[rss)1,9'A
c501PHO|O 60vtEw 55
UNDER.DASHFUSE/RELAYBOXPHOfO 58
2 | cssl
FUSE 19BACX UPLtGxTSi7,5A
c4t9
vtEw 49
FUSE 23tsns)
'8YC4l9 , 12' lI P/rOrO 63 |
I BIK/YEL
ll
(Not l0
Used)
c801
.--t
YEL/REOGBY (17)or GFN
* = '99-'00 models except 016Y5
M/T
I
I
"ar"ao I
I
,::, * g;%,,'." I v/Er,v 5e
ll,*'
o""'":f.,
tl
ll
BACK.UPLIGHTswlTcHPage 110or 110-1
?
I
Ill:L-.J
KEYLESS :DOOR LOCK ,CONTROLUNITPage 130-12 :PHOTO 134vtEw 75
- '99-'OO models . .:with KeylessEntry
CRUISECONTROLMAINswrTcHPage 34
ll
STEREORADIOTUNERPage 130-2
vlEw68
'96-'98
- - USA| LX, -EX, andHX
ll
A/T GEARPOSITIONswtrcHPage 110or 1 10-1
snsUNITPage 47
(cont'd)
10-3
'86

Power Distribution
- From Fuse to Relays and Components (cont'd)
FUSE 48HEAOL|SHT30A
c3s2 3
vtEw 27
WTIT/GFN
FUSF 50FEAFDEFBOSTEF30A
ooon r,ooxuxn \RooF -' I204
I
I
I
I
5t
FusE sr t
9l
;:$*fiit"rl.ru'"'""
I i*il
:::*ffi,
""'_[
tallt r--1 r--1
l-=Ji llll;i'ifr'ilrowi | | | |NEAN
DEFOGGER: L--J L--J
!EuI. ! powen KEYLEss
3g9F I oocin iocx DooR LocKI CONTROL CONTROLPHorobs ! Uttf UN|TL----J ii"j- , "n ^.UNDER-DASH r:d.r ppdro,uFUSETRELAY Box ;;;; "" ,!Fw /); - - - - - - ' - - - - - - - - - - I I P4atasa ;;"; i,
:-;-ry wHr/GFN
: I .-.-.i. -", I '-': :-'I "o''. I l "ott
i
";L____j_lU*?,?"
| .,"Iii;n*
: f'4. ii ;f' ii ,L-.-Ii"?,%' ;f5-"i4.-"'";5-{"'"r'!|L1
:! ! ::! ! :; 3$3i'9,1" r! ! I | | |
i l- l-
- - -
_:-
- ---------1 - - - - - - -
i I r'
- -
T
-
I F$r".',lP,XiI
ii{*"..0 ,' 1;;;il--l l | leox
i! ipp ii liuir'-*i |
')l 'l
l i' r--t-----'-.r--rL--------J- -------t I /---L-I
i
"
l-----l i ::[ir:;?:' i ::[?:+: |
"""1
'*'
i[.iiilr-il[-j,*---]d;1.*-;il;1,
:l I r:l I i: ts6'""?cro* i! ! L--i r--J
i ilr--,.ir...^.._^i I
'rr6-;i."
i: !:lJ',"#,",,*. i i.itc-,tr# Bgg,FooF u-oorinoor' RUNN|NG LrcHrs , ' LocK ; : ; !!gEr_.. ;;,1'y RELAYi cournol^urtr , i pase^138 :: i Swircn- -- Fj.Ti, pase 122, Paoe 110-13 or'138-1 Paoes 100. 110 2 -:Y;^:':;;;''"" :i ;hoi;,; ;: vehicrespre_wired ;!id-?iXioii.' glj:,';: ffl?3;1i,-- canada ----r l----A,/T ---,.-. for accessory -, |;r"*ir" .n 5 vtEvtl 13
10-12
secu.ity system

Horn
- '99-'00 Models
FUSE 52HORI,SfOP LTt5a
UNDER.HOODFUSE/RELAYBOX
HORNRELAY
2
BIU/FED
Ior
GRY
.,1 ,
J---a-----r---O
i ;l i ;,1...,' r--1 : SECUR|TY:ll:sYsrEM,ia,coNNEcroR' ! ! (oPrloN), L--J , i!,o!o 73, KEYLESS I vlEw 58
: DooR LocK withi coNTRoL Kevless, UNIT EntryI PHOIO 134I vtEw 75
i o.--------;
:T:' cnvl :
i"l ii ri-'--.| coMBtNATtoN
: lrft ! !',f,11" I' | | puotozz :', l--J vttw u ;
i--- Er""pt ex.ooer ----j
c214
v|EW21
c430PHOTO 65
Vehicles pre-wired foraccessory security system
STEERINGWHEEL
CABLEREEL
.l
I
I
I
ISee CruiseControl
GRY
ELU
I
a\
I
GRY
HORN
---------^1
niffil"a!m"
40-2

Integrated Control Unit
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, page 21,21-1, ot 21-2.
See BrakeSystemlndicatorli^hl
FUSE 3IstaaTEaSIGI{AT7AAI
I
I
I
I
I
\
\
\
\
\
\
I
I
I
I
I
I
/
S€s SiarlingSyslsm, pago 21,21-1. or 21'2.
SEs BrakeSystemlndicetorLight A6
SsaClharSrrESystom
Eog GoundDistlbution,page l,l-7.
L------3c420PHO|O 63vtEw 53
--r-r..r'
FED/BLU
SeeCeilingLightSee Seat Beltand lgnitionKey Remind€rs
t@
i'l-;;,-lH8B'r*| rrmn1gn I FUSEI
i f t*" ig8f"LJr____J PHOTO 7
u'lf tf,%,
S vtEw 3a
wHr/FED
| 3fl3,n'"n
wHr,FED I sYsteh
<--=- !t
,r"r,".0 | ,n"r,".u I
| .l B*?r:"" ,.!,.*,

Seat Belt and lgnition Key Reminders
UNDEF-HOODFUSE/RELAYBOX
S6s Pow€fDistribrtion,pe961&10.
FUS€ 25UFIEN?,irA
UNDER.DASHFUSE/RELAYBOXPHOfO 58
+Ss€ PowerDistribution,Fag6 1G6.(Termlnals 17-20)
vlEw 56r:f ftir
YEIt
S€€ Pow€tDistibliion,pag€ 10"6.
Tf
----rer,'-----l$Fffi
r"il-ffi3#-.-T-lii*"f *'
*;-'-1,rffi{ru+"
iiw-Q!""
ffi. sL,' #* lBffir' i iL_@__J_iInpu Inpur Inpr',t | | | 86 l'
=f,f-----J
| "'o'""I-ni=of'"
!:*+',
--[--:p----j
',
I f--. Erid*'i,ll*,
'"'"'"1
| ,,"."1 ^i:,:l"tt"#"'
,.*, I ,*'*.,
"'
. t tx,,:.,
'"''"[
,*,,
*Fgt it:- _ _ _, .r..*;ff'"* o",ur*,.
I Lqffi^j'-. hl.u.1f*"
cFNI
t""ff*;--- 'lt'-h*
I
'=es'oomode,sexcep,cx
i
ilT,.+ry, ".-l ttr,'g$t
AgBBBBB$"l',il*
"'*tj
L:iPHoro s6 : G4ol
r--xr------
.I RTY
iFn-
il-----*L----a;.T'--
S€ecrou$ IDistribr.niofl, >-a
Y:___L__'lftf'*
I
I-^l
I
see cround I
il",jli'.91'
I
tt*r: c4ojPHO|O 57
--f*.?*-j
--LryJ
',J,trni:
.4
Beeper o0tpul
SsarDoor f€y b6hswiich sr'/itch switcflinput inpul inpd
73

How the Circuit Works
Seat Belt Warning
With the ignition switch in ON (ll) or START (lll),
battery voltage is applied to the seat belt reminder
light. When the seat belt is not buckled, the seat
belt reminder/key-on beeper circuit in the
integrated control unit senses ground through the
closed seat belt switch. The seat belt reminder light
comes on and stays on, and the beeper beeps for
6 seconds. The reminder light and beeper will stop
when the seat belt is buckled or the timer circuit
deactivates them.
lgnition Key Warning
Battery voltage is supplied at all times to the seat
belt reminder/key-on beeper circuit in the
integrated control unit. When you turn on the
ignition key switch the integrated control unit
senses ground. lf you open the driver's door, the
door switch closes, causing the beeper to sound
until the door is closed.
Refer to the Service Manual (Section 23, Electrical)
for specitic tests or troubleshootrng procedures.
73-1

License Lights, Parking Lights, and Taillights
- Coupe, Sedan, and Hatchback
I I rusecs I
Li5:_i
"^1,1fr!;?'
arr*
HI
UNDER.DASHFUSE/RELAYBOX
UNDER.HOOOFUSE/RELAYBOX
g€o Pow€rDlstrbutiofl,page 101?.
B1 YFED/GFN ll-- -
:t! - - - '--:gsg-l 3totur['JY3;tttu vehicres pre'wired tor
: -i::-- - - -. c;A (oPrroN) ceucssu'Yir
neoionlr lf C422 | Ptloro 56I PHorc 587 A, vtEw t6
-)' 56€. Hsadlqht I
FUsEsr lYi-"'l;-. I
:]% ropnor.rt cLlEssv'v .evu"rt JtJre"'
ru9c ltz DaO€ 10$1.uclrlaEtlclllS -
ta{- uotfls7.lla
c927 13 Y CssloPTfoN I ltlglo 63
clNl.rEcroR I
-" "'
tFEoiEL( |
II
v
To Daoe 110-3(AliC6upes and '96- 98 Sedans),or page 1 10-4 ( 99- 00 Sedans),or page 110-5 (Halchback)
FED/8LK
1(with cruise 3)
RED/BLI(
GAN/YEI
AED/ELX'99100
moqelsc202r -'! wiiri| | xtYess
I I EntryI
KEYLESS '
DOORLOCK :CONTROL ;UNIT
RIGHT FRONTPARKING/TURNSIGNAL LIGHT
L.-r
/-1M LEFT FRONTfb d I PARKTNGIuRN
\Y,Z slcNAL LlcHr
'I
see Ground
"* | 3$l''Tll
II
l.?'J
! czoz- PHOfa 19
110-2

Power Door Locks
- All Models Without Keyless Entry
G551
[t.dE-l=
- ---- --:[
l'!fi:i- ".",.1
l'! l-------- r I
li I I
*"I!'k------#-r*.*rq;,pft?is,,,flr::fi
| : I I c"u,',", i c"",o"" i 21 i cs03 security'
I i"x[v*fl
i$k------+-----=#f;ffi svseni
I i t I ou*."jJ*"'l '** '"*J"l ^,,**0, #'#[""j,% i
I i ! I &H'E5o I ,ig^* d$n* |
.e&.s8usA usA ; 'o'"rto it,Ii
lrr!
-"ll'**n*ru;X,*#",XHm,
i
lil I
| :.--!---i
| .L-J iiriioflil", iffffliii F$fl,H"- itJ !F$$,i$", iI l-T;1-li"3g5"= iioriibl-r'-" 1 iffi !
I lunr.ocx I rccK IswrrcH : Lunl----i L!flJI l"'*^1 *-l- - i sreREo RADro srEREo RADro
t --t , ,--- ",r*- :
UNDER.HOODFUSE/RELAYBOXi--r?Grs;-'ir oooF Locx I
L__{g:":l9 Y C3sl
'n',o"n I iE?Loo'
I see PowerIl Distribution.I ^r^a llr-i,
"*,:TI
Bdt6rynpur
Unlock LockGround input input
130
'='99-'00 models