Honda EP3 Service Manual page 415

EVAP System
t o .
't7.
DTC Troubleshooting (cont'd)
ls there continuity?
YES Go to step 16.
NO- Replace the EVAP two waylbypass solenoid
valve (A).1
Disconnect ECM connector E {31P).
Check for continuity between EVAP bypass
solenoid valve 2P connector terminal No. 2 and
body ground.
ls there continuity?
YES Repair the short in the wire between the
EVAP bypass solenoid valve and the ECM {E20). f
NO Update the ECI\4 if it does not have the latest
software. or substitute a known-good EClvl, then
recheck (see page 11-6). lf the symptom/indlcation
goes away with a known-good ECM, replace the
o r i g i n a l E C M . I
EVAP BYPASS SOLENOID
VALVE 2P CONNECTOR
\ ,
l l l 2 l
I t - l
2WBS
-[BLU/REo)
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I
W i r e s i d e o f f e m a l e t e r m i n a l s
11-182
EVAP Canisler Vent Shut Valve Test
18. Disconnect the vacuum hose from the EVAP
canister vent filter (A), and connect a vacuum pump
to the hose.
19. Turn the EVAP canister vent shut valve on with the
Honda PGM Tester, or connect ECM connector
terminal E21 to body ground with a jumper wire.
ECM CONNECTOR E (3TP)
1 1 2 1 3
4 5 8 9
vsv
{LT (
1 / 1 5
tal/la
2A
21
z3lz4
zil./
m
31
JUMPER
WIRE
Wire side ol lemale terminals
Turn the ignition switch ON (ll)
Apply vacuum to the hose.
Does the valve hold vacuum?
YES-The EVAP canister vent shut valve is OK. Go
to step 27.
NO Go to step 22.
Turn the ignition switch OFF.
Disconnect the EVAP canister vent shut valve 2P
connector.
GBN/RED)
20.
2 1 .
2 2 .
2 3 .