Honda Civic Service Manual page 560

Emission Control System
Ch€ck the EVAP purge control
solenoid valv6:
1. Disconnect the 2P connector
from the EVAP purge control
solenoid valve.
2. Ouickly raise the engine speed
to 3,000 rpm.
Insped vacuum hose routing.
lf OK. roplace the EVAP purge
control solonoid valve.
Chock tor r short in the wir€
{PCS line):
1. Turn the ignition switch OFF.
2. Disconnect ECM/PCM connec-
tor A (32P).
3- Check tor continuity between
the EVAP purge control sole-
noid valve 2P connector termi-
nal No. 2 and body ground.
Check the vacuum when hot:
1. Turn the ignition switch OFF.
2. Block the rear wheels and set
the parking brake.
3. Jack up the lront of the vehi-
cle and support it with safety
stands.
4 . S t a r t t h e e n g i n e . H o l d t h e
engine at 3,000 rpm with no
load (in Park or neutrali until
the radiator fan comes on, then
let it idle.
5. Check for vacuum at the vac-
uum hose with transmission
i n g e a r ( A / T i n E p o s i t i o n ,
lvl/T in 1st gear) after starting
the engine.
6. Ouickly raise the engine speed
to 3,000 rpm.
Rooair shoft in the wire belwegn
the EVAP pulg6 control solenoid
valvs and tho ECM/PCM {A61.
ls there continuity?
Substitute a known-good ECM/
PCM and rech6ck. lt 3ymptom/
indicrtion 90e3 rway, r6plac6 th€
o.iginal ECM/FCM.
Check th€ EVAP purge control
solenoid valve:
1. Turn the;gnition switch OFF.
2. Disconnect the 2P connector
from the EVAP purge control
solenoid valve and warm it
up to normal operating tem-
perature again if necessary.
3. Start the engine.
4- At the harness side, measure
v o l t a g e b e t w e e n t h e E V A P
purge control solenoid valve
2 P c o n n e c t o r t e r m i n a l N o . 1
a n d N o . 2 w i t h t h e t r a n s m i s -
sion in gear {A/T in E posi-
tion, M/T in lst geari.
In3pect vacuum hoae routing.
lf OK, repl.ce EVAP purge con-
trol solonoid valve.
ls there battery voltage?
Chock for an open in the wire
(lG1 lina):
At the harnoss side, measure volt-
age beNveen the EVAP purge con-
trol solenoid valve 2P connector
terminal No. 1 and body ground.
Repair open in the wire b€lwe€n
EVAP purge contrl 3olenoid valv6
and lhe No. 15 ALTERNATOR SP
SENSOR 17.5 A, fu3e.
ls there battery voltage?
Evaporative Emission (EVAPI Controls (cont'dl
(From page 11-289)
( T o p a g e 1 1 - 2 9 1 )
11-290
I J
EVAP PURGE CONTROL SOLENOID
VALVE 2P CONNECTOR IC114I
PCS
IRED/YEL)
temale
termrnars
o f
PCS
(RED/YEL)
tGl
IBLK/
YEL)
{ T o p a g e 1 1 2 9 1 )