Honda Civic 1998 Service Manual page 374

['96 Dl6Y8 engine (coupe],'97 Dl6Y7 sngine {coupe: KL model, sedan: KL {LX} modeU.'97 Dl6Y8 engine (coupe: alt mod-
els, sedan: KL model, '98-all modolsll:
The scan tool indicates Diagnostic Trouble Code (DTC) P1456: Evaporative Emission (EVAP) conlrol system teak
detected (fuel tank system).
The scan tool indicates Diagnostic Trouble Code (DTCI P1457: Evaporative Emission (EVAp) control system reaK
detected (EVAP control canister system).
tPEs6l
tPl45?-l
Possiblo Causo
.
Fuel fill cao
. Vacuum Connections
. F u e l T a n k
. EVAP Control Canister Vent Shut Valve
. EVAP Control Canister Vent Shut Valve Circuit
o EVAP Purge Control Solenoid Valve
. EVAP Purge Control Solenoid Valve Circuit
. EVAP Bypass Solenoid Valve
. EVAP BvDass Solenoid Valve Circuit
. Fuel Tank Pressure Sensor
. FuelTank Pressure Sensor Circuit
. EVAP Control Canister
. Throttle Body
Troubl€shooting Flowchart
VACUUM
PUMP/GAUGE,0-30in.Hg
4973X - 041 -
xxxxx
EVAP
CONTROL
CANISTER
VENT
SHUT
VALVE
Wire side of lemale terminals
O.RING
Replace.
(cont'd)
1 1 - 1 8 5
-
Th. MIL has bo.n reDoned
-
DTC P1456 or P1457 i. storcd.
Ch6ck the EVAP control c.nbtet
v.nt lhut valva:
1. Disconnect the vacuum hose
f r o m t h e E V A P t h r e e w a y
valve and connect a vacuum
pump to the hose.
2 . R € m o v e t h e E V A P c o n t r o l
canister vent shut valve lrom
the canister.
3. Turn the ignition switch ON (ll).
4. Apply vacuum to tho hose.
Chock tor a short in the wiro
{VSV linol:
Disconnect the 2P connector from
the EVAP control canister vent
Does the valve hold vacuum?
Rop.ir 3hort in the wirc betw€en
lh6 EVAP control caniste. v€nt
shut valvo and the EcM/PcM
la29l.
Does the valve hold vacuum?
Check tho EVAP control crnialc.
vont 3hut valvo:
1. Turn the ignition switch OFF.
2. Connect ECM/PCM connector
terminal 429 to body ground
with a jumper wire.
3. Turn the ignition switch ON (ll).
4. Apply vacuum to the hose.
Roplrce the EVAP control cani.-
tcr vont rhut valvo,
Does the valv€ hold vacuum?
ECM/PCM CONNECTOR A I32P)
I
2
a
7
a
9
t o
l l
12 t 3
t 5 t 3 t t
r8
t 3 20 2
23
2a
6
21
a
4t
30
{LT GRN/WHTI
I
JUMPER WIRE
{ T o p a g e 1 1 - 1 8 6 ) ( T o p a g e 1 l - 1 8 6 )