Evap Canister Vent Shut Valve Test - Honda S2000 Service Manual

EVAP System
DTC Troubleshooting (cont'd)
20. Plug the upper port (A) of the EVAP two way valve.
While monitoring FTP sensor voltage with the
Honda PGM Tester, or measuring the voltage
between ECM connector terminals A29 and C18,
slowly pump the vacuum pump until the voltage
drops to about 1.5 volts.
Does the voltage drop to 1.5 V and hold for at
least 20 seconds?
YES-The EVAP bypass solenoid valve/EVAPtwo
way valve is OK. Go to step 22.
NO Repair leak from the EVAP bypass solenoid
valve, EVAP two way valve, FTP sensor ,or o-rings.
I
21.
1 1 - 1 3 8
Wire side of Jemale terminals
EVAP Canister Vent Shut Valve Test
22. Disconnect the vacuum hose from the EVAP
canister filter, and connect a vacuum pump to the
hose.
f..=
23.
24.
A973X-041-
Turn the ignition switch ON (ll).
Apply vacuum to the hose with 5 strokes of the
p u m p .
Does the valve hold vacuum?
YES- Go to step 25.
NO The EVAP canister vent shut valve is OK. Go
to step 30.
Turn the ignition switch OFF.
Disconnect the EVAP canister vent shut valve 2P
conneclor.
Check for continuity between EVAP canister vent
shut valve 2P connector lerminal No. 2 and body
g r o u n o .
EVAP CANISTER VENT
SHUT VALVE 2P CONNECTOR
vsv
(LT GRN/WHT)
25.
26.
2 7 .
2
a