engine ground HONDA CIVIC 1996 6.G Workshop Manual

lgnition System
- All '96-'98 Models except Dl685; '99-'00 Dl6Y5 with M/T
NOTE: For Service Check Connector details, see page 23-3.
@
CKP CYPsensor sensorinput input(CKPP) (CYPP)
X,*.,
rDcsensorInpur(IDCP)
POWERTRAINor ENGINECONTROLMODULE(PCM or ECM)
POWERTRAINor ENGINECONTROLMODULE(PCM or ECM)
xr*"
BLKI/EL
I
I
BLK/YEL
I See Power
H Distribution,
J__99'"'_
I
I
I
I
I
I
UNOER-OASHFUSE/RELAYBOX
"a*,telfi
u I """%t'3.
,rrrr.iFiFx".-,''ril'fi :T-DASH ll pagelo-1.FUSE/ I( FUSE 9
F.itl, Lq::---
".:lo63
10
BLK,YEL
10
c101
vlEW28
c'120
vlEW29
BLK
c14
c120
vlEW29
rIDcM) IGKPM) (CYPM)Sensor Sensor Sensolground ground ground
L-- - - -- -----J PHora 36
L-----------J
:L_1__I,
! iii:?ifq"l
I
**:'
*-"*,t";'
= PHO|O 33PHOTO 123ICW)
Secondary
ti <..-/4 i t
iLi:"_gl_i iL-----1!-----r
96- 97 models I 98- 00 modets
20
Spark Plugs

lgnition System
- All Dl685 engines; All '99-'00 Models except Dl6Y5 with M/T
NOTE: For Service Check Connector details, see page 24-4 (except D1685) or 25-4 (D1685).
STEERINGLOCKPOWERTRAIN
lm- sii.- s*- iffffiEgr
I '8f", '3#n '3#n | (Pcn' or EcM)
L------ -----J Wro 86
',L_I__J,
!l---+--l !
'i---
j----i'
fl '","?siii,xl
I I I
i*n"'."
-"1 "-l '-l *"-^lr";J
I I I ='i.{i31i",,-
All except D1685D1685
gLK.Yer t
u l9f#'
fi
"*1,[
F,*';.,
!'T-f*-'i"i! {F+ Distdbution,
LJ_gg'n'_
i.x,r
9'x*"
-.t
iF--Hs-,mT-l
ll pase lGi. I
l( FUsEe I
!Lig::___J
.I UNDER-I DASH
a FUSE/
! RELAY- BOX
1 Y C419 UNDER-^,ol',lill,l?"u' rlir?IA) RELAYBOX
.t0
BLKI/EL
10(D16Y7/D16Y8 s)
c101
PHO|O 142 lA1685)vlEw 2a
c120
vtEw 29OFN/ALULT BLU orALU/GRN
BLU,^VEL
c120
vtEw 29
ELKWHT/BLU
7
FED
c21c9
ALK
c30
;;--;;---o;;;lSensor Sonsor Sensor I
POWERTRAINor ENGINECONTROLMODULE(PCM or ECM)
ground ground gtound
L ------ -----J PHoro 36
Sec!l|dary
Sparh Plugs
20-2

POWEBTRAINor ENGINECONTROL MODULE(PCM or ECM)
vtEw 70
lgnitionoulputsignatflcM)
I
YEUGBN
c'120
vtEw 29
DISTRIBUTOR
D1685 -------,
BLU
_9-
BLU
8
9LU
:'!'\?- - -
c101
vtEw 2a
----------<- c442
I frerminals 1-4]a|-u a olo'25 |I vlEw 54
19 g C411a PHOTA 60aru I vtrw ool,cBA- -.t GAUGF
i f#f rAcHoirErER ift?i,?""i
liitr" i !I L--J IL ---- - --- -J
TESTTACHOMETERcor.rNEcToRPHO|O2l
lgniiionnrpur Fh^ih-signal "p_il;Ground output
PrimaryoutPutcontsol
20-3

POWERTRAINotENGINECONTROLMODULE(PCM or ECM)
85
ee ABS,RS, A/Trontrots (cw)
vlEw 59
See ABSSRS, MControls
Y
I
-rJ
i-
i ,r.^ sewice ili\, see,ence 3!13o, sensor *ii!o* ru
i oft,lo n[%!t?o oi8",,lo Glitid "oll,??9, ilffs, n,&l]o 'no$., a:;&------ --J vlE
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Se€ GroundDis ibution,page 14-5.
Y
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lt
L___l-: G402See GroundDistribution,page 14.
(cont'd)
23-3
LF
PHO|O 123 (C\.t)

t)
POWERTRAINorENGINECONTROLMODULE(PCM or ECM)
BLKryVHT
fFUSE 15AL1EA|{A]OAsP sExsoa7.54See PowerDistribution,page 10-5.
UNDER.DASHFUSE/RELAYBOX
t\-I Secondary! HO2S input, (sf,o2sl-------
- ,.-"., -^,o"::.f=_
rtl
ll er-x'wnr
g A crer
""",".--*'i-"fj*"
c432
c7a2
-l--
:
$i
see Power
SECOND- F rl EVAPORATIVE ' f-tl-l EVAPORA- ;ARY I I I EMISSION 'I I ITIVE
8iiE,R I ltt l !'JiiABi*"'il ltt l Et,i"'J""sENsoR I Jll I soleHoro 'l )ll I i9x1661
!t"93:t IJJ vs!:", iLLl !Ailf*'",,
: I 'l"u.t
".*,^,'"rf I ,----j I l';i";?'*
2 J:--;t, C432 ll 96 model: all Coupesptlofo /6 i 97 model a

coupes,
BLKI"V!/HT
--1"r", 'Y :t f iiiv!3 Y iiol-o ao
onr.r wxr I I ll catrfornra Sedan ll 9 g c49 !s8 mocJr, iri I a il!9.!a^5?
""""._l**t' ,L-
r I i,,o"n,n",l "f,",ul,,
-"-.1,=l
;^[::Ttn*- I i I
""1
,
+ g:%,, *"[
il I :D13 A A5A A15 A , A2gA 428 |'-----=,-- -=-7-tsHo2sc) tso2sHTci {Pcs) | {vs!,) (2wBs)Sensor Secondary EVAP purge ' EVAP control EVAP bypassground HO2S hedter controisolenoid : canister vent solenoidt control valve control , shut valve valve controlt , conkglttb------
BLKAA/HT
BLKAVHT
1
c401
c568
BLKTIVHT
BIK
FED1
Distribution, '
page 10-5. :
, BLK' YEL
SHUT BLU
(Terminals 1-10)
vtEw 52
! Ii{:',+'i":
II
23-11

PGM-FI (All '96-'98 Models except D1685; 'g$.'00 D16y5 with M/T)
- D16Y5 engine (cont'd)
r-------1POWERTRAINOJENGINECONTROLMODULE(PCM or ECM)
c125
---------1
FUSE 15
$t"t!ilS8" see Powert.5A - Distribution,page 10-5.
UNDER-DASHFUSE/RELAYBOXSecondaryH02Sanput(sH02s)
D14 I'
,n"r,"ao I
rtr
lt I
I
i,tjclt5(Ierminals'1-7]T I 1
vtEw 3a
HI
lffiq,m
,.ul
- '' :
3A-3uA---g'A--i--**----f'I :(sro2sc) (so2sHrc) (pcs) , ryse -"-*"i - l! 39Y.E!:
;:m AA8r"y- rvffi's" i euo8S:noo' E\"L'Yssl 'iH;in';'
hearer sorenoid : :ill*',":* ;:fl'".t"* iiF!ii"te'-control valv6 control I controt ___-- ll?|Et",".,:
T
$
See Pow6rDistribution,page 10-5.
BLK,/li!/HT
BLK,\II/HT
1
c401
c568
EVAPORATIVE :EM|SSTON ;(EVAP) PUBGE .CONTROLSOLENOIDVALVEPHOfO 38
EVAPORA.TIVEEMISSION(EVAP)CONTROLCANISTEFVENTSHUTVALVE
EVAPORA-TIVEEMtSStON(EVAP)BYPASSSOLENOIDVALVE
(See S/Mpage | 1-9for'99-'00models)
'98-'00
mooets
c568
c4o1 :
PHO|A A5vlEW 59
11 g Ct31
See GroundDistribution,pag€ 14-1.
Y
I
anver.x
b9^
23-14

I
t
! c,orna, (LG1)
Referencevoltage(vcc1)
ServicecnecKconn€ctorInput(scs)
POWERTRAINolENGINECONTROLMODULE(PCM or ECM)PHOfO 86
MapsensorinputSensorground(sGl)
A10
Ground Ground Ground1LG2) (PG1) (PG2)
See GroundDistribution,page 14-2.
MANIFOLDABSOLUTEPRESSURE(MAP}SENSOR
PHO|A 49 p16v7l
See ABS,SRS
Y
I
--J
SERVICECHECKCONNECTOR
vtEw39See GroundDistribution,page 14-5.
I
I
___JSe€ Ground: c402
(cont'd)
24-3

A/T Gontrols ('96-'98 CVT) (conrd)
sfr
Dl0
YEUALU
@
I J
-'u-.'-.i - - -
I 3X3'5"
L]Sffiflulilir:
lLlftT:l,', "*,
3=:. fierminalslT-20)
*l
v56
r+
r andLights
"," I
;I
-JI!.
br
iee Dash
vtEw 56
IISs€ PowerDisfibution,page 10.6.Se€ PGIV-FI,page 23-12.See Dash arConsole Ligl
I FEo/ELK
lazIMANIFOLDABSOLUTEPRESSURE(MAP}
il'-
4o
(
REO/ELK-{ i["r.r,
RED/BLK
cl't5fferminals8n4)
wEw 3a
#.1 !3"" r,
c'l31PHOfO 85vtEw 59
1lc410
vtEw 35
Se€ GroundDistribution,page 1+7.
ORN/BLK
Dl1D12
a
-----1 ENGINE
I l-c_qllFgL
I l8l,:',T* lffiff" iF!&i:'
L_"S.f___ __y,' _j,ii!,J?"*
a
i
--r3 - -.
:F.
- - -.-o ,'i6i I rRANsMrssroN
I TP MAP
i iln'o, ;;;' iiaicato, i[f[!!! ftcM)
I input input conkol IVie-Jo:e'-L - - -- - - - - - - - - - - J
39-6
ir=l*--:*"ii*lF.?}t?''------JvtEwTa
\

- How the Circuit Works
Battery voltage is supplied through tuse 56 to the
A,/C compressor clutch r€lay contacts at all times.
With the ignition switch in ON (ll), vollage is applied
to the coil of the A,/C compressor clutch relay
through fuse 17. When you push the A,/C switch
ON, and the heater fan switch is in position | , 2, 3,
or 4, a "ground" input is provided to the engine
control module (ECM) or powertrain control module
(PCM) through the l'lC thermostat and the l'lC
pressure switch.
The A,/C compressor clutch relay is grounded by the
engine control module (ECM) or powertrain control
module (PCM). When energized, the A'lC
compressor clutch relay allows battery voltage to
turn on the A,/C comDressor clutch.
The A,/C ON indicator light comes on when the A,/C
system is requested.
A,/C Thermostat
The A'lC thermostat is located on the evaoorator
housing. The A,/C thermostat turns off the A,/C
compressor clutch if the temperature at the
evaporator goes below 3'C (37'F). This prevents
condensation from freezing on the evaporator fins
and blocking the air delivery into the passenger
compartment. The blower motor will keep running
when the sensor turns off the comDressor.
A,/C Pressure Switch
The fuC oressure switch is located in the condenser
outlet line where refrigerant is in a high
temperature/high pressure liquid state. The switch
will sense abnormally high or low pressure, and
open the circuit. This removes ground, and the
compressor will stop running.
Thermal Protectot
The thermal protector, located on the A,/C
compressor, opens and turns the compressor off if it
senses high temperature. Once the compressor
cools, the switch will close and the compressor will
begin running again.
Refer to the Service Manual (Section 22,
Air Conditioning) for specific tests or
troubleshooting procedures.
62-3

Fans
- AllModels\,1 |
splicedtogetherinstead of inthe junctionconnector onDl6Y5 models
c211PHOTO 11
FANRELAYPrtofo 10
Se€ I'i CCompre€sorCont ols
1
ALKAED
a
c352
f BLKaEou Y 9,;%,.cFN I vIEw 5e
;
"'
T
";::-:.."-!
Y:. ---::Y h!ii'in"," :
I : ""'I 'is.2o) :
I i,o''ur,ff;, l;l:'l?'* i
I r- - -, |JBEI :
I ; I control | ;
I :L--J :I ' PoWERTRAIN ordu. ' ENGINE CONTROL '' MODULE
: (PCMoTECM) :I PHAfO 86I wEw 7allqA ----.ENGINECOOLANTTEMPERATUREswtrcH BLLPHO|O 33 ?
Ses GrolndDiskibution,oaqe 14.
,I
H
:I
i:
"'*
1_l
c7531
BLU/BLK
ALK2
BLK
RADIATORFANMOTORI
BLK
BLK1
ELK
c753
CONDENSERFANMOTOR
a
* czsr
page 14.
II
FJ'Glot
c211
Gro!nd
T
Se€ GroundOstribution,Pago 14.4"t1 - '96.f98: All models'99-'00: 016Y5 with M/I 01685"2 = '99-'00: Allmodels exceptD16Y5 with M/T and 01685
cof{oENs€R
* czor33123lCVIl
63