Honda Civic Service Manual page 556

Emission Control System
(From page 11 285)
Check lor an op€n in the wire
{PCS line}:
1. Turn the ignition switch OFF.
2, Reconnect the 2P connector lo
the EVAP purge control sole-
noid valve.
3. Turn the ignition switch ON (lll.
4 . M e a s u r e v o l t a g e b e t w e e n
ECM/PCM connector terminals
4 1 5 a n d A ] 0 .
Repai. op€n in the wire bGtween
the EVAP purge control solenoid
valve and the ECM/PCM {A151.
Substitute a known-good ECM/
PCM and retest. tf sympiom/indi-
cation goes away, replac6 the
original ECM/PCM.
Evaporative Emission (EVAPI Controls (cont'd)
(From page 11'285)
(To page 'l1 287)
\ .
ECM/PCM CONNECTOR A {32P}
PCS
{RED/YEL)
P G l
{BLK)
Wire side of
temale
terminals
EVAP BYPASS
SOLENOID VALVE
O.RING
Beplace.
PUMP/
GAUGE,0 - 30 in.Hg
A973X -
041 -
xxxxx
EVAP TWO WAY VALVE
EVAP IWO WAY
Check the EVAP two way valvo:
See EVAP two way valve test (see
p a g e 1 1 ' 2 9 4 ) .
Replace tho EVAP two way valve.
Check the EVAP bypr$
3olenoid
1 . D i s c o n n e c t t h e v a c u u m h o s e
from the EVAP two way valve
a n d c o n n e c t a v a c u u m p u m p
t o t h e h o s e .
2 . T u r n t h e i g n i t i o n s w i t c h O N l l l ) .
3 . A p p l y v a c u u m t o t h e h o s e . C h e c k t o r a s h o r t i n t h e w i r e
{2WBS linel:
Disconnect the 2P connector from
the EVAP bypass solenoid valve.
Does the valve hold vacuum?
Repair short in the wire betwe€n
EVAP bypass sol€noid valve and
rhe ECM/PCM lA28).
D o e s t h e v a l v e h o l d v a c u u m ?
11-286