1998 ACURA INTEGRA ABS

Engine Removal/lnstallation
2. Remove the strut brace.
Make sure iacks and safety stands ate placed plopel-
ly and hoist brackets are attached to the correct po-
sitions on the engine {see section 11,
Make sure the car will not rollolt stands and latl whileyou are wgrking under it.
8 x 1.25 mm24 N.m {2.4 kgf.m,17 tbf.tt)
CAUTION:
. Use fender covers to avoid damaging painted sur-
faces.
Unplug the wiring connectors carelully while holding
the coupler and the connector portion to avoid d8m-
age.
Mark all wiring and hoses to avoid misconnection.
Also. be sure that they do not contact other wiring
or hoses, or intedere with other parts.
NOTE: Anti-theft radios have a coded theft protection cir-
cuit. Be sure to get the customer's code number betore- Disconnecting the battery.- Removing the No.32 (7.5 A) fuse from the under
hood fuse/relay box.
Removing the radio
After service, reconnect power to the radio and turn it
on. When the word "CODE" is displayed, enter the cus
tomer's 5-digit code to restore radio operation.
1. Remove the hood (see section 20).
3.Disconnect the battery negative terminal first, then
the positive terminal.
Disconnect the battery cables Irom the under-hood
Iuse/relay box and under hood ABS {use/relay box.
6x1.0mm9.8 N.'4 (1 .0 kgf .m,
7.2 rbf.ft)
(cont'dl
STRUT BRACE
BAITERY CABLES
5-3

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

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
Vacuum Connections
Bl8BI engine:
\
MANIFOLDABSOLUTEPEESSUREIMAP) SENSOR
EVAPORATIVE EMISSION
{EVAP)THREEWAYVALVE
EVAPORATIVEEMtssloN(EVAP}
TWO WAYVALVEEVAPORATIVE EMISSION(EVAP} CONTROL CANISTER
EVAPORATIVE EMISSION
{EVAP)PURGE CONTROLSOLENOID VALVE
11-8
L

B18C1 engine:
EVAPORATIVEEMtSStONIEVAPIPURGE CONTROLSOLENOID VALVEMANIFOLD ABSOLUTEPRESSURE {MAP) SENSOBFRONT OFVEHICLE
INTAKEAIREYPASS IIAB)VACUUMTANK
To EVAPORATIVEEMISSION {EVAP)THREEWAY VALVE
O: Vacuum hose No,
EVAPORATIVE EMISSIONIEVAPI CONTROL CANISTER
EVAPORATIVEEMtSSION{EVAP}TWO WAYVALVE
INTAKEBYPASS (IABI
CONTROL SOLENOID VALVE
INTAKE AIRBYPASS {IABICHECK VALVE
{cont'd)
1 1-9

System DescriPtion
Vacuum Connections (cont'd)
Bl8C5 engine:
FUELPRESSURE REGULATOR
MANIFOLD ABSOLUTEPRESSURE (MAPI SENSOR
EVAPORATIVE EMISSIONIEVAPIPURGE CONTROLSOLENOID VALVETo EVAPORATIVEEMISSION IEVAPITHREEWAY VALVE
L
EVAPORATIVEEM|SSTON{EVAP)TWO WAYVALVE
EVAPORATIVE EMISSION
{EVAP} CONTROL CANISTER
11-10
\

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
@(t
@oiio@@Q]
a!at
@@
(cont'd)
11-11