Honda Civic Service Manual page 549

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Fue| Tank Pr€ssure sensor 196 Dr6Y8 engine (coupe},,97 D16Y7 angino
(coupo: KL mode|' 3edan: KL (Lxl modg||',97
Dl6Y8 engine (coupe: all modeb, sedan: Ki model.'98'all modols) 39
- 0O Dl6Y5 ongins with M/Tl:
r F o G ' l : : ; J l " t o o | i n d i c a t e s D i a g n o s t i c T r o u b | e c o d e ( o T c ) P 0 4 5 3 ; A h i g h v o | t a g e p r o b | e m i n t h e F u e | T a n k P r
ECM/PCM CONNECTOR D Il6PI
PTANK
ILT GRNI
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Wire side of tgmale torminals
FUEL TANK
PRESSURE SENSOR
3P CONNECTOR
(C792)
vcc2
(YEL/BLU}
sG2
(GRN/BLKI
Wire sid€ of female terminals
I
sG2
IGRN/BLKI
PTANK
IGBN/RED}
(cont'd)
11-279
The MIL has beon reponed on
DTC P0453 b stored.
Check the vacuum lines:
C h e c k t h e v a c u u m l i n e s o I t h e
fueltank pressure sensor for mis-
r o u t i n g , l e a k a g e , b r e a k a g e a n d
clogging.
Are the vacuum lines OK?
Problem verification:
1. Do the ECM/PCM Reset Proce-
dure.
2. Femove the fuel fill cap
3. Turn the ignition switch oN (ll).
4. Monitor the FTP Sensor volt-
a g e w i t h t h e H o n d a P G M
T e s t e r , o r m e a s u r e v o l t a g e
b e t w e e n b o d Y g r o u n d a n d
ECM/PCM connector termrnal
D 1 5 .
lntormittont t iluro, 3Ystem is OK
at this time. Check lot Poor con_
noctiona or loo3e wirat at C131
{loc.ted undor right 3id6 of d8hl,
CaOl llocatod rbov. under-dalh
fus6/relay boxl, C574 (C568lr
llocatod und6l accoss Pan6ll,
C792 lfuel tank Preasulo aonlorl
end ECM/PCM.
ls there approx. 2 5 V?
Check for an oPen in the wire
(SG2line):
1. Turn the ignition switch OFF.
2. Reinstall the fuellill cap
3. Disconnect the fuel tank Pres-
sure sensor 3P connector.
4. Turn the ignition switch ON (ll)
5. Measure voltage between the
fuel tank Pressure sensor 3P
connector terminals No. 1 and
N o . 2 .
Ropair opon in the wira b€tw€sn
the fuel tank prasure sonlor and
ECM/PCM (Dl1).
ls there aPProx. 5 V?
Check for an open in the wire
(PTANK line):
M e a s u r e v o l t a g e b e t w e e n t h e
fueltank Pressure sensor 3P con-
nector No. 3 terminal and No. 2
termrnal,
ls there approx. 5 V?
*: coupe
{ T o p a g e 1 1 - 2 8 0 )