fuel pressure HONDA INTEGRA 1994 4.G Owner's Manual

Fuel Supply System
Fuel Tank
Replacement
@ oo not smoke while working on fusl syltem. Koep opon flame rway from your wort ar6a.
1. Relieve the fuel pressure {see page 11-1OO).
2. Jack up the car and support with jackstands.
3. Remove the drsin bolt and drain the fuel into an approved container.
4. Remove the rear seat, access Danels and disconnect the 2P and 3P connectors.
5- Remove the EVAP two way valve cover and tuel hose protector.
6. Disconnect the hoses.
CAUTION:
a Whan disconnacling tho hosos, slide back tho clampr, th6n twist horos as you pull, to lvold drmlglng thcm.
a Clean the tlarod roint ot high plossulo hosos thoroughly brforc roconnccling thsm.
7. Place a jack. or other support, under the tank.
8. Remove the strao nuts and let the straDs tall free.
9. Remove the Juel tank.
NOTE: The tank may stick on the undercoat applied to its mount. To remove, caretully pry it off tho mount,
1O. Install a new washer on the dlain bolt, then install psns in the raverse ordgr ot rsmoval.
FUELPUMP
EVAPTWO WAY VALVE
38 l{.m(3.9 kgt'm,28 rbl.ftl
FUELTANK
EVAPTWO WAYVALVECOVER
FUEL TAI{KSTRAPS
tO t{.mll.O kgt'm,7 lbl.frl
11-114

Emission Control System
Evaporative Emission Controls
(cont'dl
Evaporativ€ Emission {EVAPI Two Way Valvo Tasting
l. Remove the tuel fill cao.
2. Remove vapor line trom the two way valve on the
fuel tank and connect to T-fitting trom vacuum
gauge ano vacuum pump as snown.
VACUUM/PRESSURE GAUGEoTJAZ-OOI OOOa
A973X-041-XXXXX
fT-FITTING
Apply vacuum slowly and continuously while watch-
ing the gauge.
Vacuum should stabilize momentarilv at 5-15
mmHg (0.2-0.6 in. Hg).
a It vacuum stabilizes (valve opensl below5mmHg(O.2 in.Hg) or above I 5 mmHg (O.6 in.Hg), install
a new valve and retest.
Move vacuum pump hose from vacuum to pressure
titting, and move vacuum gauge hose trom vacuum
to oressure side as shown.
Pressure should stabilize at 1O-35 mmHg (0.4- 1 .4
in. Hg).
a lf p.essure momentarily stabilizes {valve opensl
at 1O-35 mmHg (O.4- 1.4 in.Hg), the valve is
oK.
a lf pressure stabilizes below 10 mmHg {O.4 in.Hg)
or above 35 mmHg (1 .4 in.Hgl, install a new valve
and retest.
4.
J-.
fF . -,-/ asr^:
,T 4?e
Slowly pressurize the vapor line while watching thegauge.
11-140

Number of @indicator light
blinks while
Service Check
Connector is
connected with
the special tool.
@ indicator
lightPossible CauseSymptomRefer to
page
'loBlinksDisconnected engine coolant tempera-
rure (ECT) sensor connector
Short or open in ECT sensor wire
Faulty ECT sensor
Lock-up clutch does not
engage.14-68
1lOFFDisconnected ignition coil connector
Short or open in ignition coil wire
Faulty ignition coil
. Lock-up clutch does not
engage.'t 4-7 0
13Blinks. Shon or open in LT GRN wire between
the D3 terminal and ECM. Faulty barometric pressure {BARO)
sensor
NOTE: The BARO sensor is built into
the ECM
. No specific symptom
appears.
14-7 1
14Blinks. Short of open in FAS {YEL} wire be-
tween the D16 terminal and ECM. Faulty ECM
. Transmission jerks hard
when shitting.
't5OFFDisconnected mainshaft speed sensor
connecror
Short or open in mainshaft speed sen-
sor wire
Faulty mainshaft speed sensor
. Transmission jerks hard
when shifting.
14-75
SymptomProbable CauseRet.page
LQ! indicator light is on steady, not blinking whenever the ignition is on.14-77
[Q3] indicator light does not come on for 2 seconds after ignition is first
turned on.14-78
Lock-up clutch does not have duty operation (ON-OFFI.Check A/C signal with
A/C on.14-80Lock-up clutch does not engage.
Shitt leve. cannot be moved lrom @ position with the brake pedal
depressed.Check brake switch signal,14-41
It the self-diagnosis LQ4 indicator light does not blink, perform an inspection according to the table below.
a lf a customer describes the symptoms for codes 3, (yet the LQ! indicator light is not blinkingl, 6, 1 1 or 15, it will
be necessa.y to recreate the symptom by test driving. and then checking the @ indicator light with the ignition still
oN.
e lt ttre @ indicator light displays codes olher than those listed above or stays lit continuously, the TCM is faulty.. Sometimes the Lqd indicator light and the Malfunction Indicator Lamp (MlL)/Check Engine light may come on simul-taneously. lf so, check the PGM-Fl system according to the numbe. of blinks on the MIL/Check Engine light. thenreset the memory by removing the BACK UP fuse in the unde.-hood fuse/relay box for more than 1O seconds. Drive
the vehicle for several minutes at speed over 30 mph (5O km/h), then recheck the MIL/Check Engine light.
NOTE:
. PGM-FI system
The PGM-Fl system on this model is a sequential multiport fuel injection system.a Disconnecting the BACK UP luse also cancels the radio anti-theft code. preset stations and the clock setting. Get
the fuse so vou can reset them.the customer's code number and make note ot the radio
14-51

Heater Unit
Replacement
CAUTION:
a All SRS electrical witing hame$os are covoed wlth
yollow insulation.
a Before disconnecting any patt of tho SRS wito har-
neas, connect tha shott connoctol(s|.
a Roplaco th€ enlire sffacted SRS harnosr a$smbly if
it has an opon cilcult or dsmaged wiring.
NOTE: The original radio h8s a coded theft protection
circuit. Be sure to get the customer's code number betors
- disconnecting the bafterY.
- removing the No. 32 (7.5 A) fuse from th€ under-
hood tuse/relav box.- removing the radio
After service. teconnect 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. When the engine is cool, dtain the engine coolant
from the radiator (see section 1O).
@@ oo not lomove tho radiator cap whan
the ongine is hol; tha ongino coolant is undot
pressure and could a€voralY tcald you.
2. Snap open the clamp and disconnect the heater
valve cable from the heater valve arm.
HEATER VALVE CABLE
21-22
CLAMFS
3. Disconnect the heater hoses from the heater unit'
CAUTIOII: Engino coobnt will damago paint. orick-
ly dnse any rpilled engine coolant from paintod
surfac63.
NOTE: Engine coolant will tun out when the hoses
are disconnected, drain it into a clean drip pan'
HEATER HOSES
Remove the mounting nut from the heater unit.
NOTE: When removing the mounting nut, take care
not to damage or bend the fuel pipes, brake pipes,
etc.
8 r 1,25 rn|n22 N.m 12.2 kgt.m, tO lbf'ftl
4.

Gonnector ldentification and Wire Harness Routing
Engine Wire Harness {B1881engine)
Connector 01
Terminal
Number of
CavitiesLocationConnects ioNotes
c10'l
c102
c103
c104
c 105
c106
c107
c108
c108
c109
c110
c111
c113
c114
c115
Lt to
c117
c118
c119
c't 20
c121
c122
c123
cl24
c125
c't26
c127
c128
c129
c130
10
14
6
1
1
2
2
8
2
3
t
1
2
2)
2
8
14
2
2
Right side of engine compartment
Right side of engine compartment
Right side of engine compartment
Right side ol engine compartment
Right side of engine compartment
Right side of engine
Right side ol engine
Transmission
Transmission
Middle of engine
lvliddle of engine
Right side ot engine
Right side of engine compartment
ldiddle rear of engine compartment
Middle of engine
Middle ol engine
Middle of engine
Middle of engine
Middle ot engine
Left side of engine
lvliddle of engine
Middle of engine
Middle of engine
Middle ot engine
Middle ol engine
Left side of engine compartment
Left side of engine compartment
Left side of engine compartment
Transmission
Transmission
Transmission
Main wire harness (C221)
Main wire harness {C222}
Main wire harness (C223)
Main wire harness {C220)
Starter solenoid
Engine coolant temperature {ECT)
sensor
Engine coolant temperature (ECT)
gauge sending unit
Back'up light switch
Lock-up control solenoid valve A and B
lgnition coil
Top dead center/Crankshaft
position/Cylinder position
(TDC/CKP/CYP) sensor
Engine coolant temperature (ECT)
switch
Vehicle speed sensor (VSS)
Heated oxygen sensor (HO2S)
MAP sensor
Throttle position (TP) sensor
ldle air control (lAC) valve
Evaporative emission (EVAPI purge
control solenoid valve
Engine oil pressure switch
Alternator
Intake air temperature {lAT} sensor
No. 'l fuel injector
No. 2 tuel injector
No. 3 fuel injector
No. 4 fuel injector
Junction connector
Engine compartment wire harness
(c304)
Engine compartmenl wire harness
(c305)
Shift control solenoid valve A and B
Countershait speed sensor
Mainshaft speed sensor
M/T
NT
NT
NT
T 101
r102
Lelt side oI engine
Right side of engine compartment
Alternator
Under-hood tuse/relay box
G 101Right side of engineEngine ground, via engine wire
harness
23-16

Gonnector ldentification and Wire Harness Routing
Engine Wire Harnoss (B18Cl enginol
Connoctor 01
Totminal
umbor ol
Cavitio8LocationConnecla tof{orc!
c 101
cl 02
c103
c104
c105
c106
c107
c108
c109
c110
c111
cl12
c113
c114
c115
c116
c117
c1r8
c119
c120
cl2'l
c122
c123
c124
c125
c't26
c'127
c 131
c132
c133
c134
2
J
4
3
'I
4
2
I
2
't4
1
4
10
14
,l
2
2
8
Right side of engine compartment
Right side of engine compartment
Right side ot engine comPanment
Right side of engine compartmsnt
Right side of engine compartment
Righr side ot engine
Right side of engine
Transmission
Middle ol engine
Middle oJ engine
Right side of engine
Right side ot engine comPartment
Middl€ reat of engine compartment
Middle of engine
Middle of engine
Middle ol engine
Middle o{ engine
Middle of engine
Lelt side ot engine
Middle of engine
Middle of engine
Middle ol engine
Middle ot engine
Middle of engine
Left side of engine companment
Lelt side ot engine compartment
Left side of engine compartment
Right side ot engine
Right sid€ of engine
Middle ot engine
Middle of engine
Main wire harness (C221)
Main wire harness (C222)
Main wire harness (C223)
Main wire harness (C22O)
Starter solenoid
Engine coolant temperature (ECT)
sensor
Engine coolant temperature {ECTI
gauge sending unit
Back-up light switch
lgnition coil
Top dead center/Crankshaft
position/Cylind€r Position(TDC/CKP/CYP) sensor
Engine coolant temperature {ECT)
switch
Vehicle speed sensor (VSS)
Hsated oxygen sensor {HO2S}
MAP sensor
Throttle position {TPl sensor
ldle air control (lAC) valve
Evaporative emission {EVAPI purge
control solenoid valve
Engine oil pressure switch
Alt€rnatot
Intake 8ir temperature (lAT) ssnsor
No. 1 fuel injector
No. 2 fuel iniector
No. 3 fuel injeclor
No. 4 fuel injector
Junction connector
Engine compartment ware harness
{c304)
Engine comPanment wire harness
(c305)
VTEC solenoid valve
VTEC oil pressure switch
Knock sensor (KS)
Intaka air bypass (lAB) control sole-
noid valve
T101
r102
Left side of engine
Right sid6 ot engine compartment
Alternator
Under-hood fuse/relay box
G 101Right side of engineEngine ground, via engine wire
harness
23-18

BulbLocations
HIGH BEAM INDICAL|GHT {r.4 Wl
RIGHT TURN SIGNAL INDICATOR LIGHT (I.4 W}
BBAKE SYSTEM LIGHT (1.4 W)
SEAT BELT REMINDER LIGHT I1.4 WI
OOOR-OPEN INDICATOR LIGHT {1.4 WI
iSRS INDICATOR LIGHT (1.4 W}
LOW FUEL INDICATOR LIGHT {3.4 WILIGHTS{3.4 W x 3}
ABS INDICATOR LIGHT (1.4 W}
TAILGAT€-OPEN INDICATOR I-IGHT {1.4 W): HarchbackTnUNK-OPEN INDICATOR LIGHT 11.4 W): Sodan
LEFT TURI{ SIGNAL INDICATOR LIGHT II.4 WI
CHARGING SYSTEM LIGHT II.4 WI
POSITIOII I]{DICATOR LIGHT (1.12 W x 7l
LOW EI{GII{E OIL PRESSURETOB LIGHT 11.4 WI
MALFUI{CTION INDICATOR LAMP(MrLl fi.4 wt
MAINTENANCE REMINOER LIGHT IT.4 WI
cRutsE LTGHT tl.4 Wl
*: On the SRS printed circuit board
23-115