Honda Civic 1998 Service Manual page 372

Fuel Tank Pressure Sensor f96 D16Y8 ongine {coups),'97 D15Y7 ongins lcoupe: KL model, sedan: KL (LX} model},,97
D16Y8 engine lcoupe: all models, s6dan: KL model,'98.all modelsll:
The scan tool indicates Diagnostic Trouble Code (DTC) P0453: A high voltage problem in the Fuel Tank Pressure
sensor.
ECM/PCM CONNECTOR D (T6P}
PTANK
ILT GRNI
Wire sids of f6mals terminals
FUEL TANK
PRESSUAE
SENSOR
3P CONNECTOR
tC792)
vcc2
(YEL/3LUI
sG2
IGRN/BLKI
Wir6 side of temale terminals
sG2
IGRN/BLKI
PTANK
IGRN/NEDI
(cont'd)
1 1 - 1 8 3
1 2
3
Th6 MIL has been roportod on.
OTC P(X53 is stored.
Chack thc vacuum lines:
C h e c k t h e v a c u u m l i n e s o f t h e
fuel tank pressure sensor for mis-
routing, leakage, breakage and
cloggrng.
Are the vacuum lines OK?
Problcm verificetion:
1. Do the ECM/PCM Reset Proce-
dure,
2. Remove 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 6 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 terminal 015.
Intermittont tailu.e, sy3tem b OK
at this tim6. Chcck to. poor con-
noctions or loo.g wiros at C131
{locatod under right side ol d.!h},
C401 llocrtod abovo und.r-dash
tuse/rolay boxl, C56E llocatod
undor accoss D6ncl), C792 (fuel
tank prossurc s6n3or) and ECM/
FCM.
ls there approx.2.5 V?
Chock for rn opon in the wire
lSG2linol:
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 the
fuel tank pressure sensor 3P
connector terminals No. 1 and
N o . 2 .
Repai. op€n in thc wirc botwc€n
the tuel tank pa633ure 36nsor end
ECM/PCM (D111.
ls there approx.5 V?
Check tor an open in the wiro
(PTANK linal:
M e a s u r e v o l t a g e b e t w e e n t h e
fuel tank pressure sensor 3P con-
nector No. 3 terminal and No. 2
termanal.
ls there approx. 5 V?
(To page 11-184)