Subaru LEGACY 2006 Manual page 261

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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
BO:DTC P0459 EVAPORATIVE EMISSION SYSTEM PURGE CONTROL VALVE
CIRCUIT HIGH
DTC DETECTING CONDITION:
• Detected when two consecutive driving cycles with fault occur.
• GENERAL DESCRIPTION <Ref. to GD(H4SO)-147, DTC P0459 EVAPORATIVE EMISSION SYSTEM
PURGE CONTROL VALVE CIRCUIT HIGH, Diagnostic Trouble Code (DTC) Detecting Criteria.>
TROUBLE SYMPTOM:
Erroneous idling
CAUTION:
After repairing or replacing the defective part, perform the Clear Memory Mode <Ref. to EN(H4SO)(di-
ag)-43, OPERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H4SO)(diag)-34, PRO-
CEDURE, Inspection Mode.>.
WIRING DIAGRAM:
MAIN RELAY
5
3
6
4
2
1
B47
SBF-7
B137 ECM
B21
E2
E4
PURGE CONTROL
SOLENOID VALVE
EN(H4SO)(diag)-224
BATTERY
1 2
B47
1
3
5
B137
1 2 3
8 9 10 11 12 13 14 15
18 19 20 21
26 27
B21
1 2 3 4 5 6 7 8
12 13 14 15 16 17 18 19
23 24 25 26 27 28 29 30 31 32 33
34 35 36 37
42 43 44 45
48 49 50
E
E4
2
4
6
4 5 6 7
16 17
22 23 24 25
28 29 30 31
9 10 11
20 21 22
38 39 40 41
46 47
51 52 53 54
EN-04046