fuel HONDA INTEGRA 1998 4.G Repair Manual

rI
Emission Control System
Evaporative Emission (EVAPI Controls (cont'd)
Fuel Tank Pre$ure sensor
The scan tool indicates Diagnostic Trouble Code (DTC) P0453: A high voltage problem in the Fuel Tank Pressure
sensor.
ECM OONNECTOR D IT6PI
PTANKILT GRNI
Wire side of female terminals
FUEL TANKPRESSURE SENSOR3P CONNECTOR {C7921
\
voc2
{YEL/BLU}
sG2IGBN/BI.KI
Wire side of female terminals
The Mll- hes bson.opofiad on.DTC m453 b stored.
Check ihe vacuum lino3:Check the vacuum Iines ot the{uel tank pressure sensor for mis-routing, leakage, breakage andcroggrng.
Are the vacu!m lin€s OK?
Problem vsrification:1. Do the ECM Reset Procedure.2. Remove the fuel fill cap.3. Turn the ignition switch ON {ll).4. Monitor the FTP sensor volt-age with the Honda PGMTester, or measure voltagebetween body ground andECM connector terminal D15.Intormittont failu.e. syst6m is OK
at ihi3 time, Chack for poor con.nections or loo3e wires at C421{locatod abovo undel-dash fu3e/rolay box), C510 (loc.ted undoracc6s3 Dan6ll, C792 Ituol trnkDro.su.6 sen3or l and ECM,
ls there approx. 2.5 V?
Check tor an open in the wire(SG2 lino):1. Turn the ignition switch OFF.2. Reinstall the fuel fill cap.3. Disconnect the fuel tank pres-
sure sensor 3P connector.4. Turn the ignition switch ON {ll}.5. Measure voltage between thetuel tank pressure sensor 3Pconnector terminals No. 1 andNo.2.
Rcpair opon in the wire b6tw66nthe fu6l tank prasSuaa 36n3or endECM {Dr1).ls there approx. 5 V?
Check lor a short in tho wirc{PTANK linel:Measure voltage between thefueltank pressure sensor 3P con-nector terminals No. 2 and No. 3.
YES
sG2IGRN/BLKI
PTANKILT GRNI
{To page 1l-145)
11-144

(From page 11 144)
ls there approx. 5 V?
Check foi an opon in th. wi.e{PTANK line}:Measure voltage between ECMconnector terminals D15 and D11.
Ropair opon in the wire betwe€nihe lual tank ore$ure sen3or andthe ECM {D151,
ls there approx.5 V?
Substitute e known-good ECMand racheck. lf normal fuel tankpressure sensor is indicated,replace the original ECM.
ECM OONNECTOR D I16P)
PTANK(LT GRNISG2 IGRN/BLKI
Wire side of female terminals
11-145

Il
1l
Iil
Emission Control SYstem
EVAPrHREEWAYVALVE
tFi4s6l
fPf 45? I
Evaporative Emission {EVAP) Controls (cont'd)
Possible Csuse
. Fuel fill cap
. Vacuum Connections
. FuelTank
. EVAP Control Canister Vent Shut Valve
. EVAP Control Canister Vent Shut Valve Circuit
. EVAP Purge control Solenoid Valve
. EVAP Purge Control Solenoid Valve Circuit
. EVAP Bypass Solenoid Valve
. EVAP Bypass Solenoid Valve Circuit
o FuelTank Pressure Sensor
. Fuel Tank Pressure Sensor Circuit
. EVAP Control Canister
. Throftle Body
Troubloshooling Flowchart
The scan tool indicates Diagnostic Trouble Code {DTC) P1456: Evaporative Emission (EVAP) control system leak
detected (fuel tank system).
ThescantoolindicatesDiagnosticTroubleCode(DTC)P't457:EvaporativeEmission(EVAP)controlsystemleak
detected (EVAP control canister system)'
VACUUMPUMP/GAUGE,0 - 30 in.Bs
A973X - 041 -
xxxxx
EVAP
CANISTER
EVAPCONTROLCANISTERVENTSHUTVALVE
O-RINGReplace.
ECM CONNECTOR A I32P)
(To page 11-147)
- Tho MIL ha3 bcan t6po.tod
on.- DTC P1,t56 or P1457 i! 3toLd.
Chcck the EVAP contiol canittc.
vont shut valva:1. Disconnect the vacuum hose
Irom the EVAP three way
valve and conned a vacuumpump to the hose
2. Remove the EVAP control
canister vent shut valve {rom
the canister.3. Turn the ignition switch ON lll)
4. Apply vacuum to the hose
Chack tor a lhort in tho wire
lVSv linol:Disconnect the 2P conn€ctor from
the EVAP control canister vent
Does the valve hold vacuum?
Rcp.i. ahoft in thc wir. bctw.cn
th6 EVAP conlrol caniator v.nt
3hut valve snd the ECM lA29).Does the valve hold vacuum?
Check tha EVAP coitlol canittcr
vent 3hut valvo:1. Turn the ignition switch OFF
2. Connect ECM connoctor ter'
minal A29 to bodY ground
whh a iumPer wlre
3. Turn the ignition switch ON (ll).
4. Apply vacuum to the hose.
Baplaca tha EVAP control c!ni!'
td vant 3hul Yalvc.
Does the valve hold vacuum?
38t0tl
1215[6'tat92Au232a
2t27a22
VSV {LT GRN) I JUMPER WIRE
Wire side o{ {emale terminals
11-146
{To page 11'147)

fIr
Emission Control System
Evaporative Emission Controls (cont'dl
t
ECM CONNECTOR A I32PI
JUMPERWIRE
EVAP BYPASS SOLENOIDVALVE 2P CONNECTOB (C793I
tGl(BLK/WHTIWire side of
femaleterminals
\
ECM CONNECTOR A (32PI
PGl (BLKI
Wire side of lem6l6termrnals
(From page 11-149)
Check iho EVAP bypass solanoid
1. Turn the ignitioo switch OFF.2. Connect ECM connector terminal A28 and body ground witha ,umper wrre.3. Turn the ignition switch ON ill).Chock for an opon in the wire(lGr linell1. Turn the ignition switch OFF.2. Disconnect tho 2P connectorfrom the EVAP bypass sole-noid valve.3. Turn the ignition switch ON (ll).
4. Measure voltage between theEVAP bypass solenoid valve2P connector terminal No. 1and body ground.
Does valve hold vacuum?
Roprir opon in tha wiro batwatanEVAP pu.g6 control solcnoid valvcand thc No. 15 ALTERNATOR SPSENSOR {7.5 Al fu3..
Ch6ck tor an opon in the wile
I2WBS lin6l:'L Tlrrn the ignition switch OFF.2. Reconnect the 2P connectorto the EVAP bypass solenoid
3. Turn the ignition switch ON (ll).
4. Measure voltage between ECMconnector terminals A28 andA10.
Check the following parts lorleakage to atmosphere, andrepsir or roplace if n6ce$try:. fuel fill cap. fuel tank' fuel vapor pipe. EVAP two wsy valve. EVAP bvpess solenoid valve. tuel tank ore33urc son3ot. EVAP control canister. EVAP control canist6r veni3hut valve. EVAP purg. control solenoid
. vacuum hoses and conn6ctions
Rcpair opan in thc wira botwa.nth. EVAP byp!.s sobnoid valvc.nd tfi. ECM lA28l.
3Ia10't1
12l61611t8t9dta22a2a
x272tz3
2WBSIBLUI
wire side ol
femal€terminals
1 1-150

Evaporative Emission {EVAPI Two Way Valve Tosting
2.
Remove the fuelfill cap.
Remove the vapor line from the EVAP two way
valve, and connect it ro a T-fitting from a vacuum
gauge ano a vacuum pump as shown.
VACUUM/PRESSURE
1.
GAUGE0-a in,Hg
VACUUM PUMP/GAUGE,0 - 30 in.tlgA973X - 041 -
xxxxx
i/NI
t/
il\/
1il|
07JAZ - 001(X)08
3. Apply vacuum slowly and continuously while watch-
ing the gauge. The vacuum should stabilize momen-
tarily at 0.8 - 2.1 kPa (6 - 16 mmHg, 0.2 - 0.6 in.Hg).
lf the vacuum stabilizes {valve opens) below
0.8 kPa (6 mmHg,0.2 in.Hg) or above 2.1 kPa(16'mmHg,0.6 in.Hg), install a new valve and retest.
4. Move the vacuum oumo hose from the vacuum fit-
ting to the pressure fining, and move the vacuum
gauge hose from the vacuum side to the pressure
side as shown.
PRESSUREstoE
Slowly pressurize the vapor line while watching thegauge. The pressure should be stabilize momentarily
above 1.0 kPa (8 mmHg, 0.3 in.Hg).
lf the pressure momentarily stabilizes (valve
opens) above'1.0 kPa (8 mmHg.0.3 in.Hg), the
valve is OK.
lf the pressure stabilizes below 1.0 kPa {8 mmHg,
0.3 in.Hg), install a new valve and retest.
T.FMING
1 1-1 51

Opener Cables
Replacement
NOTE:\
a When removing the clips, use a clip remover.
a Take care not to bend the opener cables.
Hood Opener Cable:
V : Clip locations
AV:Clip,5
>: Scraw localions, 8
M)
6h* |" _,/
NOTE: Loosen the screw, then removethe clrp using a clip remover,
Fuel Lid Opcner Cables lHatchback):
NOTE: Remove the rea r seat (see page 20-1 l0), rea r trim pa nel and side trim panel (see page 20-91), then pull the carpet
back, as necessary (see page 20-126J.
A: Clip, cablo cushion location3
A A: Clip, 1 I A: Clip,6
FUEL LIO LATCH(see page 20-157)
) \,)
-----d,
FUEL LID
\
HOOD OPENER
20-154

Trunk Lid/Fuel Lid Opener Cable (Sedan):
NOTE: Remove the rear seat (see page 20-1'l2l and center pillar lower trim (see page 20-94), then pull the carpet back, as
necessary {see page 20-126). Remove the left trunk side panel (see page 20-97).
C a: Clip, 1E A: Clip, 1D >: Clip, 3
w-l
)tQ,,
r-
> : Clip. cabl6 cushion locations
A >: Clip, 1 B V: Clip, 2
Qs , r>>.
lww-
F < | Cable cushion, 1
6t
ei
TRUNK LID LATCH(see page 20'159)
(see page 20,157)
Installation is the reverse of the removal procedure.
NOTE:
a Make sure each opener cable is routed and connected properly.
a Make sure the hood, hatch, trunk lid and fuel lid open properly.
OPENER(see page 20-157)
20-155

Opener and Latch
Replacement
Hood Release Handle:
< : Bolt locations, 2
HANDLE
NOTE: Take care not to bend the opener cables.
Hood Latch:
< | Bolt locations
6 x 1.0 mm9.8 N.m(1 .0 kgf m,7 .2 thl ltlHOODOPENERCAELE
Pull up on thehandle while removingthe bolt.HOOD OPENERCABLE(see page 20-154)
NOTE: Grease each location ofthe hood latch indicated bvthe arrows.
Pry the lid.
OPENERCOVER
Remove the kickpanel (see page20-9r ).
Fuel Lid Opener {Hstchbackl:
<: Bolt. screw locdionsA <: Boh.2
6x1.0mm9.8 N m 11.0 kgf m,
7 .2 lbl lrl
BV: Screw, 1
FUEL LIDRELEASEHANDLE
@
Ib
t
lnstallation is the reverse of the removal procedure.
NOTE:
a Make sure each opener cable is connected properly.
a Make sure the hood locks securely.
a Make sure the hood and lid door open properly.
FUEL LIDOPENER CAELE(see page 20-154)
20-156

NOTE: Take care not to bend the opener cables.
Trunk Lid/Fuel Lid Opener lSedan):
<: Bolt, screw locations
A<:Bolt,2
OPENER LOCKCYLINDER
6 x 1.0 mm9.8 N m 11.o kgf m,
TRUNK LID/FUELLID
OPENER CABLE{see page 20-1
OPENERCOVER
z
tat-
7.2 tbt.trl /
B V: Screw, 1
rql.b.rz
rs? IY)
FUEL LID
TRUNK UDOPENER CABI.I(see page 20'155)
Pry the lid.
ta
Fuel Lid Latch:
: Bolt, locaiions, 2
6 x 1.O mm9.8 N.m 11.0 kgt m,7.2 tbl.trl J/)
FUEL LID OPEiIERCABLE(see page 20-154, 155)
FUEL LID LATCHRemove the fuel lid latchby turning it 90'.
FUEL LIO
Installation is the reverse of the removal procedure.
NOTEI
a Make sure each opener cable is connected properly.
a Make sure the fuel lid fits flush with the body.
a Make sure the tuel lid locks securely.
a Make sure the trunk lid and fuel lid open properly.
FUEL LID LATCHHatchbsck: Remove the rear shell and rear trim oanel,then pull the 196r edge of the left sidetrim panel back (see page 20-91).Sedan: Remove the rear trim panel,then pull the rear edge ol the left trunk sidepanel back (s€e page 20-97.
20-157

Heater Unit
Replacement
SRS components are located in this area. Review the
SRS component locatio.s, precautions, and procedures
in the SRS section (23) before performing repairs or ser-
vtce.
1. When the engine is cool, drain the engine coolant
from the radiator (see section 1O).
@ oo not remove the radiator cap when
the engine is hot; the engine coolant is undol
prsssure and could sevdely scald you.
2. Ooen the clamD, then disconnect the heater valve
cable from the heater valve arm.
HEATER VALVE CABI-E
I
i
21-22
3. Disconnect the heater hoses lrom the heater unit.
CAUTION: Engine coolant will damaga paint. Ouick-
ly rinse any spilled engine coolant from painted
sudaces.
NOTE: Engine coolant will run out when the hoses
are disconnected, drain it into a clean drip pan.
4. 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 x 1.25 mm22 N'llt. 12.2 kgl'm, 16 lbl.tl)
CLAMPS
HEATER HOSES