1998 ACURA INTEGRA coolant temperature

Gylinder Head
Removal (cont'dl
Remove the fuel return hose and positive crankcase
ventilation (PCV) hose.
Remove the brake booster vacuum hose, water
bypass hose and vacuum hose.
ltosE
VACUUM HOSE
6-18
10.
9.
11.
Remove the throttle cable,
Remove the throttle control cable (automatic trans-
mission only).
NOTE:
. Take care not to bend the cable when removing
it. Always replace any kinked cable with a new
one.
. Adjust the throttle cable and throttle control
cable when installing (s€e section 11 and 14).
THROTTLE CONTROLCABLE
ADJUSTING NUT
Remove the engine wire harness connectors and
wire harness clamps f.om the cylinder head and the
intake manifold.
Four fuel injector connectors
Intake air temperature (lATl sensor connector
Engine coolant temperature {ECT) sensor con,
nector
TDC/CKP/CYP sensor connector
lgnition coil connector
ECT gauge sending unit connector
Throttle position (TP) sensor connector
Manifold absolute pressure (MAP) sensor con-
necto r
ldle air control (lAC) valve connector
EVAP purge control solenoid valve connector
Crankshaft speed fluctuation (CKF) sensor con-
nector
a
a
a
a
a
a
a
a
ADJUSTING

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)

81881 engine:
O PRIMARY HEATED OXYGEN SENSOR {PRIMARY HO2S}{SENSOR 1}(' SECoNDARY HEATED oxYGEN sENsoR (sEcoNDARYHO2S) (SENSOR 2l€) MANIFoLD ABSoLUTE PRESSURE IMAP} sENsoRq] ENGINE COOLANT TEMPERATURE {ECT} SENSORO INTAKE AIN TEMPERATURE {IAT} SENSOB.O CRANKSHAFT SPEED FLUCTUATION {CKFI SENSOR€) IDLE AIR CONTROL IIAC) VALVE@ FAST IDLE THERMo vALvEO FUEL INJEcToR@ FUEL FTLTERO FUEL PRESSURE REGULAToR@ FUEL PUMP {FPl@ FUEL TANK
FUEL TANK EVAPORATIVE EMISSION IEVAP} VALVEFUEL PUI-SATION DAMPERAIR CLEANERRESONATORTHREE WAY CATALYTIC CONVERTER (TWC}POSITIVE CRANKCASE VENTILATION IPCV} VALVEEVAPOMTIVE EMISSON IEVAPI OONTROL CANTSTEREVAPORATIVE EMISSION IEVAP) PURGE CONTROLSOLENOID VALVEEVAPORATIVE EMISSION {EVAP} TWO WAY VALVEEVAPOBATIVE EMISSION IEVAP} BYPASS SOLENOID VALVEEVAPOMTIVE EMISSION {EVAP) OONTROL CANISTER VENTSHUT VALVEFUEL TANK PRESSURE SENSOREVAPORATIVE EMISSION {EVAP) THREE WAY VALVE
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(cont'd)
11-11

System Description
Vacuum Connections (cont'dl
Bl8Cl engine:
rl
llj
lli;r
Fil
ryl
xr
flti
li
tl
I
lr; I
,l'{9^h;'L-r
'-1] PRIMARY HEATED OXYGEN SENSOR IPRIMARY HO2SItsENsoR 1l
O SECONDARY HEATED OXYGEN SENSOR (SECONDARY
HO2SI ISENSOR 2)
.3) MANIFOLD ABSOLUTE PRESSUBE {MAPI SENSORii ENGINE COOLANT TEMPERATURE (ECT} SENSORii INTAKE AIR TEMPERATURE IIAT) SENSORi6-- CRANKSHAFT SPEEO FLUCTUATION ICKF} SENSOR
a7) KNocK sENsoR lKslO IDLE AIR CONTROL IIAC) VALVE
i' FUEL INJECTOR
@ FUEL FILTER
O FUEL PRESSURE REGULATOR
[4 FUEL PUMP {FP}@ FUEL TANKI.13 FUEL TANK EVAPORATIVE EMISSION (EVAP) VALVE
.19 FUEL PULSATION DAMPER{!9 AIR CLEANER
O RESONATOR
I t-az
I: Vacuum hose No.
iio INTAKE AIR BYPASS IIAE) CONTROL DIAPHRAGM VALVE(!9) INTAKE AIR BYPASS {IABI CONTROL SOLENOID VALVE
6I INTAKE AIR BYPASS (IAB) VACUUM TANK
CI INTAKE AIR BYPASS {IABI CHECK VALVE
€9 THREE WAY CATALYTIC CONVEFTER (TWC)
2jI POSITIVE CRANKCASE VENTILATION (PCV} VALVE
€! EVAPORATIVE EMISSION (EVAPI CONTROL CANISTER
?9 EVAPORATIVE EMISSION {€VAPI PURGE CONTNOLSOLENOID VALVE0d EVAPORATIVE EMISSION (EVAP}TWO WAY VALVE
iii) EVAPORANVE EMISSION {EVAP) BYPASS SOLENOID VALVE,3 EVAPORAIVE EMTSSTON {EVAP} CONTROL CANISTER VENTSHUT VALVE?9 FUEL TANK PRESSUR€ SENSORi3O] EVAPORATIVE EMISSION IEVAP} THREE WAY VALVE

818C5 engine:
il] PRIMARY HEATED OXYGEN SENSOR {PRIMARY HO2SI{SENSOR 1)O SECONDARY HEATED OXYGEN SENSOR ISECONDARYHO2S) {SENSOR 2)O MANIFoLD ABSoLUTE PFESSURE (MAPI sENsoRi4] ENGINE COOLANT TEMPERATURE {ECT} SENSOR(9) INTAKE AIR TEMPERATURE IIAT} SENSORG) CRANKSHAFT SPEED FLUCTUATTON TCKFI SENSON[t KNOCK SENSOR tKSt@ IDLE AIR coNTRoL {IACI vALvEO FUEL INJECToR{D FUEL FILTERO FUEL PRESSURE REGULAToR(} FUEL PUMP {FP}(} FU€L TANK
FUEL TANK EVAPORATIVE EMISSION (EVAPI VALVEFUEL PULSATION DAMPERAIR CLEANERRESONATORTHREE WAY CATALYTIC CONVERTER {TWCIPOSITIVE CRANKCASE VENNLATION (PCV) VALVEEVAPOMTIVE EMISSION {EVAP} CONTNOL CANISTEREVAPONATIVE EMISSION {EVAP) PURGE CONTROLSOLENOID VALVEEVAPORATIVE EMISSION IEVAP} TWO WAY VALVEEVAPORATIVE EMISSION IEVAP) BYPASS SOLENOID VALVEEVAPORATIVE EMISSION IEVAP) CONTROL CANISTER VENTSHUT VALVEFUEL TANK PRESSURE SENSOREVAPORATIVE EMISSION IEVAP}THREE WAY VALVE
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11-13