1998 ACURA INTEGRA electrical

i
iFuel and Emissions
SDeciaf Toofs ..,...,...............11-2
Component Locations
Index.,..,.,..................................,.,.,.,.,.,..,.,....... 11-3
System Description
Vacuum Connections ..................................,. 11-8
Electrical Connections ................................... 1 1-14
System Connectors ....,.,.,.,............................ 1 1-22
Troubleshooting
Troubfeshooting Procedures ........................ 11.32
Engine Control Module T€rminalArrangement .,.,.,..,.,. 11-39
Diagnostic Trouble Cods Chart .......-.-.......... 11-42
Howto Read Flowcharts ......,..,.,................... 1147
PGM-Fl System
System Description ............ 11-4
Troubleshooting Flowcharts
Engine Control Module ............,...,..,.,........... 11-50
Manifold Absolute PressureSensor...............................,..,.,...,................ 11-54
Intake Air TemDerature Sensor ..........,...,..... 11-58
Engine Coolant TemperatureSensor ....................,.,...,.,........................... 11-60
Throttle Position Sensor .,...........................,. 11-63
Primary Heated Oxygen Sensor(Sensor'l) .......,......,.,. 11-67
Secondary Heated Oxygen Sensorlsensor 2) .................. 11-71
Heated Oxygen Sensor Heater .....................'t1.74
Fuel Supply System ....................................... 1 1-76
Random Mistire ............. 11-78
Misfire Detected in One Cylinder .....,..:,,.,.... 11-79
Knock Sensor .........,.,..,. f -A2
Crankshaft Position/Top Dead Center/Cylinder Position Sensor .,........................ 11-83
Vehicle Speed Sensor .............,.,.,.,....,........... 11-85
Barometric Prsssute Sensor ..,...................... 11-86
Electrical Load Detector ...................,.,.......... 11-88
Crankshaft SDeed FluctuationSensor ...........................................,...,........ 11-90
ECM lnternal Circuit,..............................-......, 11-92
A/T Fl Date Line ............ 11-93
A/T Fl Signal A/B .......... 11-95
I,-1

Component Locations
Index
81881 engine:
TOP DEAD CENTER/CRANKSHAFTPOSITION/CYLINDER POSITION{TDC/CKP/CYP' SENSOR(Built into the distributor)Troubleshooting, page I 1-83
ELECTRICALLOAO
Troubleshooting,page 11-88
MANIFOLD AsSOLUTEPRESSURE IMAP} SENSOFTroubleshooting, psge 1 '1,54EVAPPURGE CONTROLSOLENOID VALVETroubleshooting,page 11-146THROTTLE POSITION {TPI SENSORTroubleshooting, page 11 63
IELO}
IDLE AIR CONTROL IIAC) VALVETroubleshooting, page 1 1-1OO
CRANKSHAFT SPEEDFLUCTUATION {CKF} SENSORTroubJeshoonng. page 1t 90
FAST IDLE THERMO VALVE {A/T modet)Inspection, page 1'l 110
INTAKE AIR TEMPERATURE {IA1 SENSORTroubleshooting, page 1 'l -58
POWER STEERING PRESSURE IPSP}swtTcHTroubleshooting, page 1 1,108
IGNITION CONTROL{Built into thedistributorlTesting, section 23
ENGTNE cooLANT TEnapenerune {ectisensoaTroubleshooting, page 1 1 -60
SECONDARY HEATED OXYGENSENSOR (SECONDARY HO2SITroubleshooting, page 1 1-71PRIMARY HEATEO OXYGENSENSOR {PFIMARY HO2SITroubleshooting, page 1 1-67
lz
(cont'd)'

Component Locations
Index (cont'dl
B18C1 engine:
THROTTLEPOSITION (TP}
SENSORTroubleshooting,page 1 'l -63
MANIFOLD AESOLUTEPRESSURE IMAP) SENSORTroubleshooting, page 11_54
INTAKE AIR TEMPERATURE{IATI SENSORTroubleshooting, page 11'58
TOP DEAD CENTER/CRANKSHAFTPOSITION/CYLINOER POSITION
{TDC/CKP/CYP) SENSOR{BUilt into the distributor)Troubleshooting, page 1 1-83
EVAPPURGE CONTROLSOLENOID VALVETroubleshooting,page rr rqo
IDLE AIR CONTROL (IAC) VALVETroubleshooting, page 1 l-100
ELECTRICALLOAD
Troubleshooting,page 11 88
POWER STEERING PRESSURE IPSP}swtTcHTroubleshooting, page 'l1 108
IGNITION CONTROL
;- \
SENSOR {SECONDARY HO2S)
Troubleshooting, Page 1 1_71
(Built into the distributodTesting, section 23
ENGINE COOLANTIECD SENSORTroubleshooting, page 11 60
SECONDARY HEATED
SPEED FLUCTUATION(CKF) SENSORTroubleshooting, page 1 1-90
PRIMARY HEATED OXYGENKNOCK SENSOR IKSITroubleshooling, page 1 1_82SENSOR IPRIMARY HO2S)Troubleshooting, Page 11 67
il\
e)
11-4

818C5 engine:MANIFOLD ABSOLUTEPRESSURE {MAPI SENSOFTroubleshooting, page 11 54 EVAPTHROTTLEPOSITION ITP}SENSORTroubleshooting,page 11 63
PURGE CONTROLSOLENOID VALVETroubleshooting,page 11 146
TOP DEAD CENTER/CRANKSHAFTPOSITION/CYLINDER POSITTONfiDC/CKP/CYP) SENSOR{Built into the distributor)Troubleshooting, page I t-83
IDLE AIR CONTROL IIAC) VALVETroubleshooting, page 11 100
INTAKE AIR TEMPERATUREIIAT) SENSOR
ELECTRICALLOADDETECTOR(ELD)
Troubleshootipage 11 88
Troubleshooting, page 1 1,58
POWER STEERING PRESSURE {PSP}swrTcHTroubleshooting, page 11 108
SPEEO FLUCTUATION{CKF} SENSORTroubleshooting, page 11 90
SENSOR (KS)Troubleshooting, page 1 1-82
ENGINE COOLANT TEMPENATUR€IECTI SENSORTroubleshootang, page 11-60
PRIMARY HEATED OXYGENSENSOR IPRIMARY HO2SITroubleshooting, page I1-67
HEATED OXYGENSENSOR ISECONDARY HO25)Troubleshootang, page 1 1,71
lcont'd)
1 1-5
,'(l)

System DescriPtion
Electrical Connections
FUELIN'ECTOHS
EVAP COIiTIBOL CANISTEAvE|rISHUT VAIVE
sotENoto vaLvE
lo FAOIAIOB FAN FELAY,CONOEI{SEh FAN FELAY
FUSESr-1) BATTERY {100 A)*
€) INTERIOF LIGHT {7.5 A}.
€) HORN STOP 120 A)'
o rcl (,$ A)*
o BACK UP IRADIO) 17.5 A)*
@ Fr €/M t15 Al'.'I NO. .I3 FUEL PUMP ISRS UNIN (15 A)
a,J No. 25 METER 17.5 Al
O No. 15 ALTERNATOR SP SENSOR {7.5 A}(0 No. 17 HEATER A/C R€LAY (7.5 A)(i) No. 31 STAnTEB SIGNAL (7.5 A)
*: in the under'hood fuse/relaY box

t;
System Description
sG2
Electrical Connections (cont'd)
c223 CiOSi
I
PO2SHTC
vccl
vcc2
cnl6lu'
OFN/BLK
YEVWHT
WHT/YEL
REO/YEL
YEVBLU
RED/ALX
WHI/qFN
TPS
neo,wrtrJffil
oFN/Btx--1-:JECt SE SOR
neonerJf$l
cnvELx--L# |IAT SENSOR
vsveLu--JJr[5lneozgr.x--_l F--? |cnN/Blx 1-:JfP SENSOR
".,.""11--,"u-l
I WECSOLENOIDI VALVE
VTEC PIIESSUFEswtTcH
-+ BLU/BLK - |----o o--l I- +- aq'- --l # |
+ i crdl
fr i-'-
t'=- - -
l
*-,*{Fli
,.,__!i
CXFSEN90B
._.._.._..J
PAI||ARYHO2S (SENSOR 1)cfl4ft'-------------1YEVBED ---l f .g--t- IFEo/cBN ___l F=-< f Icnr,wxr"_ lFj IIIAP SENSOB
cill
*4: 818C1, 818C5 engines*5: 81881 engine
11-16

System Description
Electrical Connections (cbnt'd)
TO GAUGE ASSEMBLY,oRN - -) rclt, cFutsE coNTRoL
SECONOAFYH02S(sEtisoR 2)
f- -tl
T--lPgP SWTICH
u"n'--J
rBLK --L
G301
r
I_G40'l
eu.ter-{ffr-lBLU^'VHT - tsfi:l IBrK'____{l - |
vevar-x'Jffil
BLK/BLU.1- I
DATA UNKCOI{NECTOF
anvwrrJ senvrce crecx
{ Blx -{coNNEcroF
8nN,/BtxlJGFN/wHr'-WHI/REO -BLK . -.{
*2r 818C1engine*5: 81881 engine
1-18
L

System DescriPtion
,'Electrical Connections (cont'dl
\
c217WNT/RED -
YEVWTTT -
wrfi/BLU'-
c2t6wHt/BtJ( -
- BIJ(AEL -
- CRN/RED -
- Btx -
_L c21r
/Btx
UNDEFHOOD FUSE/RELAY 8OX
w{T
UNOEEDASH FUSE/RELAY BOX
'.'u^'o-Jfffi---]
| | A/r GEAR POSITION IELK/,!YHI--1| srvrrc1| (^'n Il{lf ic41a/T: c4t3
PTTP (SRS (lID O5A)
c/xltwrrzneo {IIEuc.YEL -l
BLVRED -I
ca:|9ar-uzwrrJwHr/?ED -l
IYEVGRN -t
c55lYEVBLU -f
c4a0ELX,/YEL {
*1: USA
11-20