1999 HONDA CIVIC HO2S

PGM-FI (All '9e'98 Models except D16B5; '99-'00 D16y5 with M/T)
- D16Y7 Engine
' I pressure Ret€rence sensor ECT IAT primary I' i sensor input , voltag€ input sensor rnput sensor inDut HO2S inout I| ! praNKi ' OCc2) irpsr (Ecr)' ,tAr) ' l"no)si- I, r (Pr^Nn, \wtz) {rPs) iEcr} (AT) {PHozs)lL-------J----- --_-__J: Dis y j oro y ory D2 y D8y D7y
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r (suzl lPo2sHrc) I! Sensor inmary'| 6rl1d Ho2s \
a - heater \
t control I,L------- -----J'
23-8

POWERTRAIN TFUSE 15AtTEii|AtOf, ^ -aPsE|{aon see Fowert5a ^ Distribution,99coldary---]-l-"jt='-.iHO2S iinBt
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See Pow€rDistribution,page 10.5.
EVAPORATIVEEMtSStON(EVAP) PURGECONTROLSOLENOIDVALVE
EVAPORA. 'TIVEEMtSStON '
(EVAP) :BYPASS iSOLENOID ,VALVEEvaponn- 2
TIVEEMtSStON(EVAP)CONTROLCANISTERVENT SHUTVALVEPHATO 39
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'97 model:Calilornia Coupe,Calilornia Sedan LX'98 modei: all
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23-9

t)
POWERTRAINorENGINECONTROLMODULE(PCM or ECM)
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fFUSE 15AL1EA|{A]OAsP sExsoa7.54See PowerDistribution,page 10-5.
UNDER.DASHFUSE/RELAYBOX
t\-I Secondary! HO2S input, (sf,o2sl-------
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see Power
SECOND- F rl EVAPORATIVE ' f-tl-l EVAPORA- ;ARY I I I EMISSION 'I I ITIVE
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coupes,
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BLKAA/HT
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c401
c568
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Distribution, '
page 10-5. :
, BLK' YEL
SHUT BLU
(Terminals 1-10)
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II
23-11

FED/YEL! il'Jlilli:Distribulon,
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Fromnext page.FI
t
H
INTAKE '
AIR ;TEMPER. .ATURE(rAr)SENSOR 'PHO|O 4s i 4
BRN/BLK
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PRIMARYHEATEDOXYGENSENSOR(HO2S)
PRIMARYHEATEDOXYGENSENSOR(H02S)
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i sdltGr i irimari' ' I oR ENGINE
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hear.r 'l MODULE| , haat.. .tMvuuLE
I ; ;;ii;r i | (PcM oR EcM)
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(cont'd)
. I OR ENGINE' HOzS Primary i CONTROLI fruzs Fflmary a c(JNIHor Label VS celt Dumo HOzS' ' , primary | MOOULE
i l"dqanc6 vohags Befe{ence bell . heater i : !-1029 | (p-Q!/| OB: red$snce voltag€ Beftrence c€ll heater ' : HOzS | (PCM OB: insJt input voltage control control ; ; inpul I ECM), (rABELt Ms+) tlP-.vs-) (rp+) (Po2sHrc) ; , l"Y_ j r;!J?.*----i---
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: I I see Grourd
23-13

POWERTRAINCONTFOLMODULE(PCM)PHOTO 86
FUSE 15AI'EiIIATOR3F S€txsoe?.5A
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See Pow€rDisltbution,page 10"5.
UNDER-DASHFUSE/RELAYBOXPhoTo 58
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: (Pa2grTG)I Primary
I HO2S
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i lffitsr conuot varv€ controt conaor ---
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24-7

PGM-FI (All '99-'q) Models except D16Y5 with M/T and D1685) (cont'd)
- Dl6Y7 Engine
ct6
(
k
GRN
GRN/ALK
II
)
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FUELTANKPRES-SURESENSOR(See S/M1
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GFN/BLK
GNN/BLK
6
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8
GFiI/BIK
tis3 :INTAKEAIRTEMPER-ATURE(|AT)SENSOR
PRIMARYHEATEDOXYGENSENSOR(HO2S)
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BLKT^YEL
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24-8

--.I POWERTRAt lor I I rusers i oasx
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----, (sO2sHTc) (PCS) (vSV) L2WBS)i Secondary EVAP pufge EVAP control EVAP bypass !r. HO2S control canister venl solenoid Itt heater solenoid shut valve valve control I! control valve control controli *'-- |.E------ ----J
13 g c401
POWER.TRAIN orENGINECONTROLMODULE(PCM orECM)
vtEW 70
24-11

PGM-FI (Dl685) (cont'd)
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UNDER-DASHFUSE/RELAYBOXPHOTO 58
POWERTRAIN T
PrimaryHO2SInput(PHO25)
Secondary
input
CONTROLMODULE(PcM)PHO|O A6vlEW 70
S€s PowerDistribution,p6gs 1&5.
i (PHozst (sHo?srL-------
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See GroundDistuibution,pago 14-2.
G101PHOfO 33
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Sea PowerDislibution,pag€'1G5.
c't23
c123
PRIMARYHEATEDOXYGENSENSOR(HO2S)
c125
c125
SECONDARYHEATEDOXYGENSENSOR(HO2S)
(1
BLK
BLK
2
GFN/ALK
HOzS' HO2S
POWERTRAINCONTROL MODULE(PcM)
n€aterconlrolhgatercontrolI
25-8