Honda Civic Service Manual page 551

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'99 - 0O modols except Dl5Y5 engine with M/T:
r F o 4 5 ' : : n " : " t o o I 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 ( D 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 l T a n k P
Wire side of temale terminals
FUEL TANK
PRESSUNE SENSOR
SUB.HARNESS
6P CONNECTOR {C574 (C568)}}
vcc2
{YEL/BLUI
sG2
IGRN/BLK)
Wire side of female terminals
PTANK
{LT GRNI
(cont'd)
11-281
ECM/PCM CONNECTOR A {32P)
PTANK {LT GRN)
The MIL has been reported on.
DTC P0453 is 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 t t h e
fuel tank 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
c l o g g i n g .
Are the vacuum lines OK?
Problem verilication:
1. Do the ECM/PCM Reset Proce-
du re,
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 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 terminal
A.29.
lntermittent failuro. svstem b OK
at this time. Check for Poor con_
noctions or loo3€ wire3 at C131
{located under tight side of dash),
C4Ol {located above underdash
fuse/relay boxl, C57{ (C5681'
l l o c a l e d u n d e . a c c e s s P a n e l l ,
C792 {fuel tank Pressure sensorl
aod ECM/PCM.
ls there approx.2.5 V?
C h € c k f o r a n o p e n i n t h e w i r a
{ S G 2 l i n e ) :
1 . T u r n t h e i g n i t i o n s w i t c h O F F .
2 . R e i n s t a l l t h e f u e l f i l l c a P
3 . R e m o v e t h e a c c e s s P a n e l
l r o m t h e f l o o r .
4 . D i s c o n n e c t t h e f u e l t a n k P r e s -
s u r e s e n s o r s u b - h a r n e s s 6 P
5. Turn the ignition switch ON (ll)
6 , A t t h e a c c e s s P a n e l s i d e , m e a -
s u r e v o l t a g e b e t w e e n t h e f u e l
t a n k p r e s s u r e s e n s o r s u b _ h a r -
n e s s 6 P c o n n e c t o r t e r m l n a l s
N o . 5 a n d N o . 6 .
Repair open in the wire between
the fueliank Pres3ure 3ensor and
ECM/PCM {Cl8).
ls there approx.5 V?
Check lor an oPen in the wire
{PTANK linel:
At the access Panel side, mea
s u r e v o l t a g e b e t w e e n t h e f u e l
tank pressure sensor suo_harness
6P connector No. 2 terminal and
No. 6 terminal.
l s t h e r e a p p r o x . 5 V ?
( T o p a g e 1 1 . 2 8 2 )