Subaru 2009 IMPREZA Service Manual page 624

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
BG:DTC P0447 EVAPORATIVE EMISSION CONTROL SYSTEM VENT CONTROL
CIRCUIT OPEN
DTC DETECTING CONDITION:
• Immediately at fault recognition
• GENERAL DESCRIPTION<Ref. to GD(H4SO)-115, DTC P0447 EVAPORATIVE EMISSION CONTROL
SYSTEM VENT CONTROL CIRCUIT OPEN, Diagnostic Trouble Code (DTC) Detecting Criteria.>
CAUTION:
After servicing or replacing faulty parts, perform Clear Memory Mode <Ref. to EN(H4SO)(diag)-55,
OPERATION, Clear Memory Mode.>, and Inspection Mode <Ref. to EN(H4SO)(diag)-44, PROCEDURE,
Inspection Mode.>.
WIRING DIAGRAM:
MAIN RELAY
37
38
39
40
B220
B21
1 2 3 4 5 6 7 8 9 10 11
12 13 14 15 16 17 18 19 20 21 22
23 24 25 26 27 28 29 30 31 32 33
34 35 36 37 38 39 40
42 43 44 45 46
48 49 50 51 52 53 54
B98
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20
FUSE
B220
(RELAY BLOCK)
4 3
B97
R1
R82
R81
R86
DRAIN VALVE
B97 R57
B99 R82
1 2 3 4 5
6 7 8 9 10 11 12
41
47
R86
R68
1 2
1 2
EN(H4SO)(diag)-207
SBF-7
C: B136 D: B137 ECM
B99 B98
R3 R2
R15
R57
R68
PRESSURE CONTROL
SOLENOID VALVE
C: B136
1 2 3 4 5 6
7 8 9 10 11 12 13 14 15 16
17 18 19 20 21 22 23 24 25 26 27
28 29 30 31 32 33 34 35
D: B137
1 2 3 4 5 6 7
8 9 10 11 12 13 14 15 16 17
18 19 20 21 22 23 24 25
26 27 28 29 30 31
ENGINE (DIAGNOSTICS)
BATTERY
E
B21
E2
E4
PURGE CONTROL
SOLENOID VALVE
B220
1 2 9 13 17 21
10 14 18 22
3 4
11 12 15 16 19 20 23 24
5 6
7 8 25 29 33 37
26 30 34 38
27 28 31 32 35 36 39 40
E4
1 2
EN-07194