Honda Civic Service Manual page 386

28.
29.
ls thete continuity?
YES-Go to step 28.
NO-Replace the EVAP canister vent shut valve (A)
a n d o - r i n g ( B ) . 1
Disconnect ECM connector E (31P).
Check for continuity between EVAP canister vent
s o l e n o i d v a l v e 2 P c o n n e c t o r t e r m i n a l N o . 2 a n d
body ground.
EVAP CANISTER VENT SHUT
VALVE 2P CONNECTOR
Wire side o{ female terminals
ls there continuity?
YES-Repair short in the wire between the EVAP
c a n i s t e r v e n t s h u t v a l v e a n d t h e E C M ( E 2 1 ) . 1
NO Update the ECM if it does not have the latest
soflware, or substitute a known-good ECM, then
recheck (see page 11-6). lf the symptom/indication
goes away with a known-good ECM, replace the
o r i g i n a l E C M . I
3 0 .
Vacuum Hoses and Connections Test
Do the fuel tank vapor control valve test (see page
1 1 - 1 8 7 ) .
ls the fuel tank vapot control valve OK?
Y E S - G o t o s t e p 3 1 .
N O R e p l a c e t h e f u e l t a n k v a p o r c o n t r o l v a l v e . l
Tighten the fuel cap 3 "clicks", then monitorthe
FTP sensor readings with the Honda PGM Tester.
Start the engine. and let it idle for 5 minutes.
Check the FTP sensor readings.
ls the reading above 0.5 kpa (4 mm Hg, 0.16 in.
Hg) pressure, or about 3 V?
YES Update the ECM if it does not have the latest
software, or substitute a known-good ECM, then
recheck {see page 1 1-6). lf the symptom/indication
goes away with a known-good ECfvl, replace the
o r i g i n a l E C M . t
NO Check the following parts for leaks:l
. F u e l t a n k ( A )
. F u e l f i l l c a p ( B )
. F u e l f i l l p i p e ( C )
. F u e l t a n k v a p o r c o n t r o l v a l v e ( D )
. F u e l t a n k v a p o r r e c i r c u l a t i o n v a l v e ( E )
. F u e l t a n k v a p o r r e c i r c u l a t i o n t u b e ( F )
. F u e l t a n k v a p o r s i g n a l t u b e ( G )
. F u e l t a n k v a p o r c o n t r o l v e n t t u b e ( H )
. FTP sensor (J)
- R e p a i r o r r e p l a c e a n y l e a k i n g p a r t s .
5 t .
11-179