1996 HONDA CIVIC PCM

--1 UNDER.DASH TT---] UNDER.HOOD
ilryi'.
i t !,1f:,1:FUSE 13 I FUSE/RELAY I ,' FUSE 44 I FUSE/RELAY4a!c!!q : Box !
reu : Box
I J ggr'"ti R,ej.l?I:: liu-irouDislribution,
ih3:ili*:: i il"*L.,g---------J L
lFI'T
r- Dr6ys --r I L____ _l l;l,zs;", ensines :a f-------
---*l
lvi;iia-
i g4urse i ! .t s€€PGtr'tn <.-!__J
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rl..- -'l PGM.FII I MA|N
- in:HY.
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soacround -''-'"1ff?*t''"..'''
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lifffil;! , Cruseconuot | - : coNTRoLI , sbnatinput : .,-,*-_" Power input ! uooule. : -tpl:lyP$- -; Marnshar Power input luooule\:;;;-#-- ;&c r(PcM)
,pd sensd, 9ims9r Grcund 1",f3tr7"*i irprt inputf otct {trM) PGr) (PG4 rLGl' (LG2),a=----- -----_---J
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| 'f;r,"See GroundOistribution,page'14-2.
(cont'd)
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Ground
BAN/ELKBFN/BLK
39-9

A/T Controls ('98 GX and All '99-'00 Models except CW) (cont'd)
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POWERTRAIN
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UNDER-DASHFUSE/RELAYBOXiT-*-.'-;---l
LJ5Effi$iJ
lL[9*?:{. csoT
See PowerDistribution,page 10-6.
===a oerm|nars 17-20)
lJ'lll"-+
See Dash and Console Lights
l*'r
L__l+: G40t
See GroundDistribution,c€lge 14-7.
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c410
vlEW 35
c136
vtEw 20
r--,"";---- -----^-_=--r powERTRAtN
I s"""iy n'i'^- lcoNTRoL
i ;a; iiii"rto, i MoDULE (PcM)
L------- ----:Slgrol- -j ur-iic,
SeePGM-FI
39-10

POWERTRAINCONTROLMODULE(PCM)
t1fo 85'59
36 GX) rfo 142'20
= lrale-Female)rminals are also)versed on GX
-I POWET
I Parrv I c-oNrF
i l"=9"' l?v.9rse gll[gR'Y'
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g_'" 9?,o;1"",.r n"n I
u't"" caucEAssE
nro I PI
SeeA/T GearPositionlndicator
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See A,/TGearPositionlndicator
,nrt I
-
See !y'TC*arhsitionIndicator
A/T GoarPositionIndicaior
c410
V|EW35 WHT
o
13
GBN12GFNAVHI.! AiT GEARPOSTTIONSWITCH
See Cruise Control
39-11

?uTi'i'------lUNDER.OASHFUSE/RELAYBOX
UNDER-HOODFUSE/RELAYBOXfI,€! PtfiP
f#rntt)See PowerDistribution,
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page 10-2.tJ---------J" Y 3,,t"?:"""""T
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PGM-FIMAINRELAY
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Power input
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SeePGM,FI
POWER.TRAINCONTROLMODULE(PcM)PHO|O 86
(cont'd)
\!
CW hansm|ssion_ control solonoids Ground I
t (HLC LS-) THLCLS+) (SCLS-) (SCLS'I iSH LS I rSHLS+j ISOLINHI lPGr) (PO2) (LG1) rLG2r IL-------i:---- ---------J
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GRNBLII
cl16(Terminals8-14)
vlEW 39BLK
CVTTRANS.MISSIONSOLENOID
See GroundDistribution,page 14-2.
BRN/BLK
PH.PL START SHtF'CONTROL CLUTCH CONTNOLUN€AR CONTNOL LINEARSOLENOID UI{EAR SOLENOIDsoLEltotD
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39-13

A/T Controls ('99-'00 CVT) (cont'd)
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Y,
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Sa€ POM-FI,page t4€-
YEUBU,I
THROTTLEPOStTtON
FP)SENSOR
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c410
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AL
-'r PowERTRAtN' I coNrBoL-. I MODULE (PCM):, I PHO|O 86| | vtEw 70
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39-14

A/C Compressor Controls
- AllModels
cc5)M7
BLU/RED
?
\a
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&cCOMPRESSORCLUTCHRELAYPHOfO 10
a
! ,acc, : POWERTRATN! arn.^-^,o..^, I or ENGINE
! ii i"i-iiii"v i.,ii.r | fi 3$18.
I A/C request ! (pCM or ECM)I (ACSJ a pHOrO a6L------J vtEw 70
REO
BEO
1
RED
BLU/FEO
2
BLU/FEO
ct31
:"1'!i'------;
Fi:rz, a ='e6-'s8: A|| moders except D1685vtEw 21 '99100: D16Y5 with l\illT'* = 96-'98: All models
ir'iio ," 99. 00: Dt6y5 wth t\4/t Dl6Bb
atcPRESSUREswtTcH
c752
c1
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To facing page ('96''98 models)or page 62'2 ( 99-'00 models).
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-t---------Jc353
c2'14
vtEW21
c209
A,/CCOMPRESSORCLUTCH
COMPRESSORTHERMALPROTECTOR
UNDER-HOODFUSE/RELAYBOXf-T-*-'.T'---l H53.',EPA?' i-l-------
i iflH* !F,?r",, i f6F"'.i:.",",
| tsBi":J;"#il ! a T| | oaoe 1o-9. ! I I See PowerL_J1_j:_-_j ! H Distriburion.e Y c42o i I
pase 1o-1.
***
f ifi"l'
^ see power ! |
62
!(on bracket)

- 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
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I :L--J :I ' PoWERTRAIN ordu. ' ENGINE CONTROL '' MODULE
: (PCMoTECM) :I PHAfO 86I wEw 7allqA ----.ENGINECOOLANTTEMPERATUREswtrcH BLLPHO|O 33 ?
Ses GrolndDiskibution,oaqe 14.
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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