Fuel HONDA CIVIC 1999 6.G Workshop 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

Power Distribution
- From Fuses to Relays and Components (cont'd)
-",JX-
I
I
\FUSE '3n{fEtbRUC|{T7.'.4
FUSE 44FI EA'!aacoa Dr6lc)
FUSE il8POUGNtvtl|Do{taoa
c351
c420PHOTO 63
I-.:CrJ
WIIT/ELX
1
I
I
I
I
FUELINJECTIONRELAYPage 25-1PHOTO 135
DATA LINKCONNECTOR(DLc)
Page 23-4,24-4, ot 25-4PHOfO 5001685 engine -
c419PHOTO 63
UNDER.DASHFUSE/RELAYBOXPHO|Q 5A
POWEBw]tDowNELAYPagE 120H$fa8
L-- ----- --20
wlIT/RED
-t
c420 6PHO|O 63vtEw 53
WHT/FEO
c407PHOTO 52Y|EW 2 ( 9& 00 modsrs)
c5s'rPHO|O 63
L-----JU DEN.DASHFUSE/RELAY BOXPHOfO 58
To Fuses 7, 8, 1 0, and I 1 ;tor deiails, s8€ PowerVYindotts, pa$ 120.
HatchbackCoup€ & S€dan
WHT/FED
(Sedan 1)
(e6-
101
,,, tr:::--*''.:lltut
(Not used)
i--l
tlL--J
TRUNKLIGHTPage 114-3
tl
tl
SPOT.LIGHTSPage 114-3
tl
tl
CEILINGLIGHTPage 114-3
* = Male-Femaleterminalsreversed for'99-'00 models
7A
tl
tl
PGM-FI MAINRELAYPage 23.24, ot 25
vtLw 18
I
I
PGM-FIRELAYPage 2324, ot 22
vtLw 18
i-,-x;-l
icontac{i
tlINTEGNATED
l__i!ffi*
10-10

Ground Distribution
- Gl01 ('98 Dl685;All '99-'00 models except D16YS with M/T)
NOTE: Wires shown without color codes are black.
01685/_ D16Y5/ -.016Y8engrnes
.__-;,#'-_,--', engrne ;
, wEc: PRESSURE '
, swtTcH :I Page24-4 iI PHOTO 150: r -'l
:t | :
:l | :,L-J.
FUELPRESSUREREGULATOR ENGINESHUT.OFF COOLANTSOLENOID TEMPERATUREVALVE SWTTCHPage 25-1 Page 63PHOIO 143 PHOTA 33r-1F-.|
llll
lltlL-J L-J
POWERTRAIN olENGINE CONTROLMODULE (PCM or ECM)Page 24-3 ot 25-3PHOTO 86
----:y4
tl
tl
PGi,|.FIMAINRELAYPage 24ol 25
vlEw 18
tl
tl
3Y'I'I
excaptD1685
VEHICLESPEEDSENSOR(vss)Page 336FN/ELKERll/EIKcl01PHOTO 21PHOTO 142(o1685)vtEw 28
ct16Cferml-nals8n 4)
FltaFt( vttw 39t- .''iiti ' " D1685/D16Y5 engrnes ---'
t2
. ENGINE : :
i 933'?il-; i 5"T,Yf,*' 33i,"o, i
i lgfft" i I S.ir1".l^ soL€NorD :' Pase 63 : : ;;;;; - pase 24.i :' PHOTO 63 | | VtEWlO pHOIa124 ;, r-1 | , F-.t r-.r
:l | ;:l | ! | :;t | :,t | | | ;
j,f
ii T.__.,|,,,,,.
j
--
----- --l i otoas I Dr6y5 :
:------.1.--------.
14-2
o-----J

_t
89c559
Wrth. - - MilrorFUEL , DetoggerTANKUNIT ' RIGHTpaoes 74 ; POWERanj sr -r , MIBRORPHofo 103 | Page 141-2
i-l : i-l
I ltl I
,,:l'it{;
FUELTANKFUEL INTERNALPUMP SOLENOIDPaqe 23-1 VALVEor1q: Page 25-1PHOTO 103 PHOTO 145
r-.| r-'r
tttl
tttlL-J L-J'l
:l'a,t,
- G501 and G502
'9&'98
m@els
NOTE: Wires shown without color codes are black.
DRIVER'SSEATBELTSWITCHPage 73
tl
tl
STEREORADIO AUDIOTUNER UNITPage 150-1 Page 150-1PHOTO 73 PHOTO 137vtEw 6a vlEw 74
F-.|F-.1
ttll
trtlL-J L-J-.I 'I
93'c557
vtEW 62
'99'00
modelexceprDl685
14
G501
14-9
!-6ssz

NOT-E: Fu^se.31 is HO-f-with lgnition Switch in START (tD and clutch pedat depressed orA"iT Gear Selector in PARK (P) or NEUTRAL (N), see Siarting Systeni, page 2i or 21-2.
See Int€oratedControl Jnit.page 70.
UNDER-OASHFUSE/RELAYBOXPHOTO 58
c420
vtEw 53
PGM-FIMAINRELAY
vtEW 18
|- flrn*',
""-"'l
""^"*l *L
I
016Y5/D16Y8 D16,
;-ensnewrh",r-t :--*f 3l3yi:131ffi,-'' ---
I H;[h- N
i ii jt
lilT:{xsl I
ffifi:iil:"'"" il
-UTtl
i ryffi$il: i i ffifrffi ,,1 _,_:_____r,"*,
,A124 , , A14A, A13A ' 416A C6APOWERTRAIN, , ,^lAcy) (iAcvP) (rAcv N) | crnt $rs): I rAurr'arve , i r--.-, : Fuel pump control Start input ! :rNGtNFi , nt;*Y:l"" , i r--r I Fuel pump conkol Stan input | ;'NG|NElr 'uv"nv' : , IAC valve controt ' ICONTROL\I , I MODULE
t'----- ':------------i l(PcMorEcM)
I t';[?,i?"*L------ ---J
(cont'd)
---l-lf -----=-------------=--:
i
"au*", IzI
23-1

PGM-FI (All '99-'00 Models except Dl6Y5 with M/T and Dt685)
@r-T-------r UNDER.DASHI t FUSE ro IFUSE/RELAYI FUEL PUMP I BOX
i { {"rl"t* i PHarc 58
! | see Power II H Distribution. I
I I page 1o-2. IL-Y,------J8 Y C420
FUSE 44n E/ur5A
FUSE/RELAYBOX
:1,-
I
"l[-------]:"il",.,
|
'f -------;;[
#""r'6"'
ll__
il _mfil?9'"*,*,,,"f,r*r"rl"l
^*_"'l t -
I
-"1
$$f'Fl,[ I
"-Tf;f,{=l[
"rrl
Lj",,. il
"""'-l
m' m'm'm'fti:i";r""'
| *i. fl.iK""l
l I
'l
!
"'-lr4'iJ
",,,!,
+il!"'bt,"*",,N.
"j :l :l :l :l
i,rrr&---------;!%
---i*t---. ---f
I back up. input inpd Fuel injector cortrol \
t\
atL------ ______J
@
BLU
sLu
24

PGM-FI (All '99-'q) Models except D16Y5 with M/T and D1685) (cont'd)
- Dl6Y7 Engine
ct6
(
k
GRN
GRN/ALK
II
)
-l.a
FUELTANKPRES-SURESENSOR(See S/M1
BLK
GFN/BLK
GNN/BLK
6
GAN/8LX
8
GFiI/BIK
tis3 :INTAKEAIRTEMPER-ATURE(|AT)SENSOR
PRIMARYHEATEDOXYGENSENSOR(HO2S)
c'123
c123
cs68PHOTO 103
c401
vtEw 40
ct31
vlEvt S9
FffiflH
{
r,Bi".'#
H
r{
t
f 5:o#'""'"n
rtrt
BLK
at
It
lFueltan* TP \lpr€asura Rg{grsncs ssnsor ECT IAT Primary IF€nsor inpJt voltago input sensor input sensor inpul HO2S inout I| (rt^xn Naca Crpsr lscn - -- 1-ran -- -(p,ioi3i-- ,L------- -----J
BLKT^YEL
clt5(Ierminals 8-14)
vlEw38
contaol
24-8

Programmed Fuel Injection System (PGM-F|) (D1685)
NOTE: Fuse 31 is HOT with lgnition Switch in START (lll) and A'/T Gear Selector in PARK (P) or NEUTRAL (N),
see Starting System, page 21-1 .
@
ii6iir-
- -TFU'E;--- - -
I gI3'5"
y#*i[HtF{,iiH.frIHHi Jiffi" !['.iF{,$SNALr5a Y 7.54| - See Inleqrat€dSse Pow€r | --+ ffii;l'i; -- | Phoro 58i ffi ffi:- |EHF? i I
p--',b"
I iffij*,**.,* iFE^l
SACI( UP7,ta
'[-------------'[&T:1,
L.[E"Jj!i_.f;ff:]_j
*L:*
ilTrr,*ii "",""[*=
{ {-
--
;[n*n-
--ftr-'lf
tlGFNYEI
T HI I
rv
J &l?3.,"","'o-,rr ! ,o"on
! #""?,* I
'rT#
*"ll
'fi-----n
h,T5$B.I
J J lvA!::, !
[--iI I
!tl
I onr I can ver- | er-u onn
Itt
A arsl rrsl a24
;t--7;,i----&;-----{IAC valve mnt.ol
;YN
IT/U
ll
v
ToBonlaclngpage
4
FED
I T------i:il;
,oln,.r I """-f-T:
-l-Lri | |d
l
wtl
Iil
i-,"ffifi
- - - - - - -- - -;s,nl - -ffi'J -.'"-
I Oac* rjp input input A
I
I
I|.-------
{F;H:{"
I
I
-"1
,,..!.'-^-*'! PowER-
f,mihHin.
I (PCM)
lif''?;"
25
BIU

From B
WHT/BED
WHT/REO
WHT/FED
W}ITIRED
2
c401
vlEw 73
WIIT/BED
LJ*
;.;.il,
m
:il
"u"T.l,
m
*
a
From A onfacing page.
v
I
*"rr"a^ |
,L-:l'il
mm-'
1:-a PHO|O147
I See Ground8LX I oistribtnbn,
|
*'"J'.
v'a-
FUELINJECTORRELAYPHOTO 135
r S€s Groundarr< Dietribution.
FUEL PRESSUREREGULATORSHUT.OFFSOLENOIDVALVE
: c4o'lc150
vtEW 72
r-
IT
;.;..{
'm'
m'ill"'"-"'
,t,iJ,-,
i{
it.;:;t"'-
INJECTORCONTROLMODULE
See G.oundDislribution,pag€ 14-3.
Y
!
BFN/BLKI-J
I
I Distribr;tion,I pags r{-6.
ti: clot
y'o,JPHOIO 86
G101
-"----.< c.t 16- -J (Terminals'l-7)""'7lw;8"'"
Ground GrouftGround Ground
fu*gr PorYgrfl[J2) (rNJ3] 0NJ4]
;:[
2s-1
!-'
BFN/BLK