Honda 2004 Odyssey Service Manual page 362

Evaporative Emission (EVAP) Control Diagram ('99-00 Models)
The EVAP controls minimize the amount of fuel vapor escaping to the atmosphere. Vapor from the fuel tank is
temporarily stored in the EVAP control canister until it can be purged from the canister into the engine and burned.
• The EVAP control canister is purged by drawing fresh air through it and into a port on the throttle body. The purging
vacuum is controlled by the EVAP purge control solenoid valve, which operates whenever engine coolant
temperature is above 147°F (64°C).
• When vapor pressure in the fuel tank is higher than the set value of the EVAP two way valve, the valve opens and
regulates the flow of fuel vapor to the EVAP control canister.
EVAP
TWO WAY
VALVE
FUEL
FILL
CAP
FUEL TANK
EVAP BYPASS
FTP
SOLENOID
SENSOR
VALVE
EVAP EVAP
CONTROL CONTROL
CANISTER CANISTER
FILTER
EVAP PURGE
EVAP CANISTER
CONTROL
VENT SHUT VALVE
SOLENOID
VALVE
BLU GRN/
BLK
LT GRN/
WHT
PCM
RED/
YEL
EVAP LEAK
CHECK PORT
From
No. 6
BLK/
ECU (PCM)
YEL
CRUISE
CONTROL
(15A)
LT
(in the
GRN
driver's
under-
YEL/
dash
BLU
fuse/relay
box)
VARIOUS
SENSORS
BLK
(cont'd)
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