Subaru IMPREZA GD 2007 Series Manual page 2272

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Diagnostic Trouble Code (DTC) Detecting Criteria
CU:DTC P1443 VENT CONTROL SOLENOID VALVE FUNCTION PROBLEM
1. OUTLINE OF DIAGNOSIS
Detect the abnormal function (stuck closed) of the drain valve.
Judge as NG when fuel tank pressure is low.
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
Drain valve
Battery voltage
Atmospheric pressure
Tank pressure when starter is OFF →
ON
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
(14) (15) (16)
( 9 ) (10) (11) (12) (13)
(8) Magnetic plate
(9) Shaft
(10) Plate
(11) Valve
(12) Housing
(13) Filter
Enable Conditions
Open
≥ 10.9 V
≥ 75.0 kPa (563
mmHg, 22.17 inHg)
–0.67 ←→ 1.43 kPa (–
5 ←→ 10.7 mmHg, –
0.20 ←→ 0.42 inHg)
GD(STI)-205
( 8 ) ( 7 ) ( 4 ) ( 5 ) ( 6 )
(17) ( 2 ) ( 1 ) ( 3 )
(14) Retainer
(15) Diaphragm
(16) Movable core
(17) Spring
(18) Cover
(19) O-ring
GENERAL DESCRIPTION
(19) (18)
EN-02294