Honda 2004 Odyssey Service Manual page 585

EVAP System
DTC Troubleshooting (cont'd)
20. Plug the upper port (A) of the EVAP two way valve.
21. While monitoring the FTP sensor voltage with the
HDS, or while measuring the voltage between PCM
connector terminals E3 and E28, slowly pump the
vacuum pump until the voltage drops to about
1.5 V.
Does the voltage drop to 1.5 V and hold f or at
least 20 seconds?
YES The EVAP bypass solenoid valve/EVAP two
way valve is OK. Go to step 22.
NO Repair leakage from the EVAP bypass
solenoid valve, EVAP two way valve, FTP sensor, or
O-rings.
EVAP Canister Vent Shut Valve Test
22. Disconnect the vacuum hose from the EVAP
canister filter (A), and connect a vacuum pump to
the hose.
A973X-041-XXXXX
23. Turn the ignition switch ON (II).
11-276
A
A973X-041-XXXXX
A
24. Apply vacuum to the hose with 5 strokes of the
pump.
Does the valve hold vacuum?
YES Go to step 25.
NO The EVAP canister vent shut valve is OK. Go
to step 30.
25. Turn the ignition switch OFF.
26. Disconnect the EVAP canister vent valve 2P
connector.
27. Check for continuity between EVAP canister vent
shut valve 2P connector terminal No. 2 and body
ground.
EVAP CANISTER VENT
SHUT VALVE 2P CONNECTOR
VSV
(LT GRN/WHT)
Wire side of female terminals
Is there continuity?
YES Go to step 28.
NO Replace the EVAP canister vent shut valve (A)
and O-ring (B).
B
A