Subaru 2009 IMPREZA Service Manual page 839

Diagnostic Trouble Code (DTC) Detecting Criteria
BG:DTC P0447 EVAPORATIVE EMISSION CONTROL SYSTEM VENT CONTROL
CIRCUIT OPEN
1. OUTLINE OF DIAGNOSIS
Detect open or short circuit of the drain valve.
Judge as NG when the ECM output level differs from the actual terminal level.
2. COMPONENT DESCRIPTION
(19)
(1) Bobbin
(2) Coil
(3) Diode
(4) Stator core
(5) End plate
(6) Body
(7) Yoke
3. ENABLE CONDITION
Secondary Parameters
None
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
(14) (15) (16)
(9) (10) (11) (12)
(8) Magnetic plate
(9) Shaft
(10) Plate
(11) Valve
(12) Housing
(13) Filter
Enable Condition
GD(H4SO)-115
(8) (7) (4) (5)
(13) (17) (2) (1)
GENERAL DESCRIPTION
(6) (19) (18)
(3)
(14) Retainer
(15) Diaphragm
(16) Movable core
(17) Spring
(18) Cover
(19) O-ring
EN-02294