AC control HONDA CIVIC 1996 6.G Owner's Guide

lntake Manifold
Replacement (cont'dl
NOTE: Use new O,rings and gaskets when reassembling.
CAUTION:
. Check lor folds or scratches on the surface of the gasket.. Replace with a new gasket il damaged.
D16Y8 engine:
INTAKE MANIFOLDReplace if cracked orif mating surfaces areoamageo,
INTAKE AIR CONTROL{ract vAt_vE {M/Tl
GASKETReplace.
8 x 1.25 mm24 N.m {2.{ kgtm.17 tbtftt
THROTTLEBODY
8 x 1.25 mm22 N.rn |.2.2 kgl.rn,16 tbtft)INTAKE MANIFOLDBRACKET
9-4

816A2 engine:
INTAKE MANIFOLDReplace if cracked orif mating surfaces areoamageo,
8 x 1.25 mm22 N.rA 12.2 kgl.trr,16 tbtftt
o
t_-lUH
E
INTAKE AIR CONTROLIIACI VALVE
8 x 1.25 mm24 N.m 12.4 kgf.m,17 tbtftl
8 x 1.25 mm23 N.m {2.3 kg{.m,17 tbt.ftl
Al N-m 12.2 kgt.m,16 tbt.ftlMANIFOLDBRACKET
n ""\--
VlCd>-^
M\G
yo
9-5

tl
Engine Coolant Refilling and Bleeding
CAUTION: when pouring engine coolant, be sure to
shut the relay box lid and not to lst coolant spill on the
eleqtrical parts or the paint. lf any coolant spills, rinse it
off immediately.
1. Slide the heater temperature control lever to maxl-
mum heat. Make sure the engine and radiator are
cool to the touch.
Remove the radiator caP.
Loosen the drain plug, and drain the coolant'
Remove the drain bolt from the cylinder block'
D16Y5. D16Y7, Dl6Yg sngines:
DRAIN PLUG
0d
I ro
78 N.m {8.0 kgl m.58lbt'ft)
6.
1.
B1642 engin€:
WASHERReplace.
DRAIN BOLT78 N m (8 0 kgf m' 58lbfft)
Apply liquid gasket to the drain bolt threads, then
reinstall the bolt with a new washer and tighten 't
securely.
Tighten the radiator drain plug securely
Remove, drain and reinstall the reservoir' Fill the
tank halfway to the MAX mark with water, then up
to the MAX mark with antitreeze.
(cont'd)
10-7
MAX MARK

!
Fuel and Emrsslons
SoecialToofs .....,...."..,. 11-2
Component Locations
lndex ....................., ......... 11-3
Svstem Description
Vacuum Connections ................,,..,.. ......... 11-12
Electrical Connections ...............,.,.,... ....... 11-29
System Connectors ........,.,.,.......................... 1 1-51
Troubleshooting
Troubleshooting Procedures ................. .. 11-81
Engine Control Module/PowertrainControl Module TerminalAfiangement ....,.,..... 11-88
Diagnostic Trouble Code Chart .................,., 11.97
How to Read Flowcharts .,.......................... . 11-103
PGM-Fl System
System Description ...... 11-10,1
Troubleshooting Flowcharts
Engine Control Module/PowertrainContlol Module ........ 11-107
Manitold Absolute Pressure Sensor .....'. . ... 11-115
fntake Air Temperatuie Sensor ..... . . ., . 11'121
Engine Coolant Temperatuae Sensol ........., 11-128
Throttle Position Sensor ...................,........... 11-132
Primary Heated Orygen Sensor (Sensor 1l ... 11-139
Secondary Heated Oxygen Sensor(Sensor 21.................................................... 1 1-153
Heated Oxygen Sensor Heater ...................,. 11-157
Fuel Supply System ...... 11-164
Random Mislire ......., ..11-166
Misfire Detected in One Cylindsr ................. 11-167
Knock Sensor .,.,............ 11-170
CKP/TDC/CYP Sensor ................................... 11'172
Vehicle Speed Sensor ...........,......,...,.,........... 1t-176
Barometric Pressure Sensor ...............,......... I 1-178
Electrical Load Detector,.,,............................ 1 1-179
CKF Sensor .................... 11-183
ECM/PCM Internal Circuit ............................. I 1-188
A/T Signal {TMA/TMBI .................................. I 1-189
ldle Control System
System Doscriplion ............ 11-190
Troubleshooting Flowcharts
ldle Control System ...... 11-192
ldle Air Control Va1ve .................................... I 1-19i1
Starter Switch Signal .................................... 1 1'202
Air Conditioning Signal ................................. 11'201
Ahernator FR Signal .................................... . 1 1-208
BrakeSwitch Signal ..................................... f 1"210
Power Sleering Prossure Switch Signal ......11-212
A/T Gear Position Signal ............................... 11-216
Clutch Swiich Signal ................................-.... 11-214
ldte Speed Setting . .............11-220
Fuel Supply System
Fuel Lines .,...................,.,.,.,11-221
Fuef Tube/Ouick-Connect Fittings ..........,.,........ 11 -227
System Description ....'.... 11-230
Fuel Pressure .......,.,,........... 11-230
Fuef fniectors ......................11-232
Fu€f Pressure Regulator .....,.......................'...,. 11-231
Fuef Fifter ............................11-235
Fuel Pump .............'.......'.... 11-236
PGM-FI Main Relay .............11'237
Fuel Tank ................ ....,...'.'.' 11'211
Intake Air System
System Description ....-.-.....11-243
Air Cfeaner ...........,......."". .11-211
Throttle Cable .....................11-211
Throttfe Body ........ ..'... . . .,.11-211
Fuel Iniestion Air Control System ,.,.,....-........... 11-250
Emission Control System
System Description .-..........11-252
Taifpip€ Emission ...............11-252
Three Way Catafytic Convert€r ............,.,,.,.,.,.... 11 -252
Exhaust Gas Racirculaiion System ...,.,,,,.,.,.,.,,. 11'254
Positive Crankcas€ Ventilation System .... . . .. 11-266
Evaoorative Emission Controls ..................,,..,.,. 11 -267

Gomponent Locations
L
lndex
D16Y5 engine:
{IATISENSORTroubleshooting,
ELECTRICAL LOADDETECTOR IELD) (USA mod6l)Troubleshooting, page 11 179
THROTTLE POSITION ITP)SENSORTroubleshooting, page 1 1-132
MANIFOLD ABSOLUTEPRESSURE IMAPI SENSORTroubleshooting, page 1'l-115
EXHAUST GAS RECIRCULATION
IEGRI VALVE and EXHAUST GAS
RECIRCULATION IEGRI VALVE
LIFT SENSORTroubleshooting, page'l 1-254
INTAKE AIR TEMPERATUR€
IDLE AIR CONTROL (IAC) VALVE
{M/T)Troubleshooting, page 1 1-194
EXHAUST GAS RECIRCULATION{EGRI CONTROL SOLENOIDVALVE ICW)Troubleshooting. page 1 1-254
EVAPORATIVE EMISSIONIEVAPI PUNGE CONTROLSOLENOID VALVETroubf eshooting, Page 1 1'21 1, 243
CRANKSHAFTPOS|TTON/TOP DEAD CENTER/CYLINDERPOS|T|ON
POWER STEERING PRESSURE(PSP) SWITCH (USAI
Troubleshooting, Page 1 1-212
KNoCK SENSoR (Ks)
(cwl
Troubleshooting, Page 1 1'170ICKP/TDC/CYP} SENSOR(Built into the distributor)Troubleshooting, Page 1 1'172
VEHICLE SPEED SENSORTroubleshooting, Page 1 1-176
FLUCTUATION (CKF} SENSOR
Troubleshooting, Page 1 1 -183
ENGINE COOLANTTEMPERATUREIECT) SENSORTroubleshooting, Page 11 128
IDT.ECONTROL IIACI VALVE
{cw)Troubleshooting, Page 11 198
WAY CATALYTICCONVERTER ITWCITroubleshooting, Page 1 1-252PRIMARY TIEATEDSENSOR {PNIMARY HO2SI
tsENsoR 1t {M/TlTroubleshooting, Page'l 1-146
PRIMARY HEATED OXYGENSENSOR (PRIMARY HO2SI
tsENsoR 1l {cw}Troubleshooting, Page 1 1-139
SECONDARY HEATED OXYGENSENSOR {SECONDARY HO2S){SENSOR 2)Troubleshooting, page 11 153
(cont'd)
1 1-3

Component Locations
Index (cont'd)
D16Y8 enginc:
THROTTLE POSITION {TPISENSORTroubleshooting, page 1 1-132
ELECTRICAL LOADDETECTOR IELDI {USAI
INTAKE AIR TEMPERATUREIIATISENSORTroubleshooting, page 1 1,124
MANIFOLO ABSOLUTEPRESSURE {MAPI SENSORTroubleshooting, page 1 1-1 15
IDI.E{A/T)
IDI.E AIR CONTROL IIACI VALVElMtflTroubleshooting, page 1 1-194
Troubleshooting, page 1 1-179EVAPORATIVE EMISSIONIEVAPI PURGE CONTROLSOLENOIO VALVETroubleshooting, page 1 1 27 1. 283CRANKSHAFTPOSTTTON/TOP DEAD CENTER/CYLINDERPOStTtON
POWER STEERING PRESSURE(PSPI SWTTCH |USA)Troubleshooting, page 1 1-212{CKP/TI'C/CYPI SENSOR(Built into the distributor)Troubleshooting. page 1 1-172KNOCK SENSOR IKSITroubleshooting, page 11 170
CRANKSHAFT SPEEDFLUCTUANON ICKFI SENSORTroubleshooting, page 1 1,183
CONTROL {IACI VALVE
ENGINE COOLANTTEMPERATURE{ECTI SENSORTroubleshooting, page 11 128
Troubleshooting, page 11 198
PRIMARY HEATED OXYGEN SENSOR{PRIMARY HO2S} (SENSOR 1l {'96 - 98 modolslTroubleshooting, page 1 1-139
'9!t - 00 modols:'96 - 98 modols:
THREE WAY CATALYNCCONVERTER ITWCITroubl6shooting, page 1 1-252
THREE WAY CATALYNCCONVERTER ITWCITroubleshooting. page 1 1-252
SECONDARY HEATED OXYGENSENSOn(SECONDARY HO2SI (SENSOR 2ITroubleshooting, page 1 1-153
SECONDARY HEATED OXYGENSENSOBISECONDARY HO2S} ISENSOR 2ITroubloshooting, page 1 1-155
PRIMARY HEATEO OXYGEN SENSORIPRIMARY HO2SI ISENSOR 1ITroubleshooting, page 1 1-141
11-4

D16Y7 engine:
ELECTRICAL LOAO
DETECTOR (ELD) IUSA}Troubleshooting, Page 11'179
THROTTLE POSITION ITPISENSOR
MANIFOLD ABSOLUTEPRESSURE (MAPI SENSORTroubleshooting, Page 1 1-1 15r1-132
CRANKSHAFTPOSTTTON/TOP DEAD CENTER/
CYLINDERPOSITION
POWER STEERll\lG PRESSURE
{PSP' SWTTCH {USA)Troubleshooting, Page 11 212
IDLE AIR CONTROL (IAC) VALVE
Troubleshooting, page 1 1-198
Troubleshooting,
VEHICLE SPEED SENSOR (VSSI
Troubleshooting, Page 1 1-176
INTAKE AIR TEMPERATURE
IIATI SENSORTroubleshooting, page 11 124
l
/i
CRANKSHAFT SPEED
{CKP/TDC/CYPI SENSOR(Built into the distributorlTroubleshooting, Page 't 1-172
FLUCTUATION ICKFI SENSORTroubleshooting, Page 1 1-183
PRIMARY HEATED OXYGEN
SENSOR (PRIMARV HO2S)
{SENSOR 1lTroubleshooting, page 1 1'139
ENGINE COOLANTTEMPERATURE(ECTI SENSORTroubleshooting, page 11 128
EVAPOBATIVE EMISSION(EVAPI PURGE CONTROLSOLENOID VALVE
THNEE WAY CATALYTICCONVERTER ITWCITroubleshooting, page 1 1-252
Troubf eshooting, page 1 1 27 1, 283
SECONDARY HEATED OXYGENSENSOR (SECONDARY HO2S)(SENSOR 2lTroubleshooting, Page 1 1-1 53
(cont'd)
,l .ltr| | -r,

Component Locations
Index (cont'dl
Bl6A2 engine:
INTAKE AIR TEMPERATURE{IAT} SENSORTroubleshooting, page 1'1-125
MANIFOLO AESOLUTEPRESSURE IMAPI SENSORTroubleshooting. page 11-1 19IOLE AIR CONTROL {IAC) VALVETroubleshooting, page 1 1,196
ELECTRICAL LOADDETECTOR IELDI (USA)
Troubleshooting, page 1 1-180
THROTTLE POSITION ITPISENSORTroubleshooting, page 11-134
CRANKSHAfiPOStTtON/TOP DEAD CENTER/CYLINDERPOStTtON{CKP/TDC/CYPI SENSOR(Bualt into the distributor)Troubleshooting,page 11-174
POWER STEERING PRESSURE{PSPI SWTTCH (USA)
Troubleshooting, page 1 1-214
VEHICLE SPEED SENSOR {VSS}Troubleshooting, page 1 1-177
ENGINE
CRANKSHAFT SPEEDFLUCTUATION (CKFI SENSORTroubleshooting, page 11- t85TEMPERATUREIECTI SENSORTroubleshooting, page I 1-128
THREE WAY CATALYTICCONVERTER ITWC)Troubleshooting, page 1 1,252
S€CONOARY HEATED OXYGENsf rlsoR
sfCoNDARY HO2SI {SENSOR 2): ?shootrng, page 11 155
-6
PRIMARY HEATED OXYGEN SENSORIPRIMARY HO2S) ISENSOR 1ITroubleshooting, page 1 1-141
11

I
CLUTCH SWITCH lDl6Y5 onginoM,/TITroubleshooting, page 1 1-218
'96 - 98 modsls:
Sell-diagnostic Procedures.page 11 81
ENGINC CONTROL MOOUI.T(FCMI/POWERTRATN
CONTROL MODULE IPCMITroubleshooting, page 1 1-107
'9!, - 0o modol3:
PGM.FI MAIN RELAYRslay Testing, page 11-237Troubleshooting, page 1 1-238PGM.FI MAIN RELAYRelay Testing, page l1 237Troubleshooting, pago 1'! 238
SERVICEl2Pl
CONNECTOR
ENGINE CONTROL MODU1T(ECM}/POWERTRAIN
CONTROL MODULE IPCMITroubleshooting, page 11 111SERVICE CHECK CONNECTORtzPlSelf-diagnostic Procedures,page 11-81
Self-diagnostic Procedures,page 11-81
{cont'd)
11-7

Component Locations
Index (cont'dl
'96 D16Y8 engine (coupel,'97 D16Y7 engine (coupe: KL model, sedan: KL (LXl model),'97 D16Y8 engine (coupe: all models, sedan: KL modell,'98-all models:
FUEI- VAPOR PIPEFUEL FEED PIPEFUEL GAUGE SENDING UNITTesting, see section 23FUEL PUMPTesting, page 11 236Replacement, page 11 236FUEL FILTERReplacement,
€VAPOFATIVE EMISSION(EVAPI CONTROL CANISTERVENT SHUT VALVETroubleshooting, page l1'283
FUEL FILLCAP
FUEL TANKReplacement, page I l-241
EVAPORATIVE EMISSIONIEVAPI CONTROLCANISTERTroubleshooting, page 11 283
EVAPORATIVE EMISSIONIEVAP) BYPASS SOLENOIDVALVETroubleshooting, page 1 1 -283
FUEL INJECTORSReplacement, page 1 1-232EVAPORATIVE EMISSION(EVAPI TWO WAY VALVETesting, page 11 294
FUELREGULATORTesting, page 11-234
TANK PRESSURESENSORTroubleshooting, page 11-275
Replacement, page 1 1-234
'96 Dt6Y5 engine,'96 D16Y7 engin€, '96 D16Y8 engine (sedanl,'97 D16Y5 engine,'97 Dl6Y7 engins (coupe: l(A, KC models,
sedan: KA, KC, KL (DXl models, hatchback: all models),'97 Dl6Y8 engine (sedan: KA, KC modelsl:
FUEL FEED PIPE
FUELFITTINGSPrecautions, page 1 1-227Disconnection, page 11 227Connection, page 11-228
FUEL VAPOR PIPE
FITTINGS
EVAPORATIVE EMISSIONIEVAPI CONTROL CANISTERTroubleshootiog, page 1 1-271
FUEL FILTERReplacement, page 1 1-235FUEL PUMPTesting, page 11-236Replacement, page 11-236
FUEL TANKBeplacement, page 11 241
TIVE EMISSION{EVAP) TWO WAY VALVETesting, page 11-294
TUBE/OUICK.CONNECT
FUEL PRESSUREREGULATORTesting, page 11'234Beplacement, page 11 234
Precautions, page 1 1-227Disconnection, page 11'227Connection, page 1 1-228
11-8
FUEL RETURN PIPE