Subaru Legacy 2003 Service Manual page 2059

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE (DIAGNOSTICS)
BF:DTC P1247 — RELIEF VALVE CONTROL SOLENOID VALVE 1 CIRCUIT LOW
—
• TROUBLE SYMPTOM:
• Poor driving performance
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H4DOSTC)-35,
OPERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H4DOSTC)-33, Inspection
Mode.> .
• WIRING DIAGRAM:
MAIN RELAY
6
4
5
3
2
1
B47
B47
1 2
3 4
5 6
B136
C:
B137
D:
B220
SOLENOID
BOX ASSY
(A)
(A): RELIEF VALVE SOLENOID 2
(B): RELIEF VALVE SOLENOID 1
(C): EXHAUST VALVE CONTROL SOLENOID VALVE
(NEGATIVE PRESSURE)
(D): EXHAUST VALVE CONTROL SOLENOID VALVE
(POSITIVE PRESSURE)
(E): INTAKE AIR CONTROL SOLENOID VALVE
(F): EXHAUST VALVE CONTROL DUTY SOLENOID VALVE
B220
1 2 3 4
5 6 7 8
9 10 11 12
EN(H4DOSTC)-220
ECM
(C) (D) (E)
(B)
B136
1 2 3 4
5 6 7
8 9 10 11 12 13 14 15 16
22 23 24
17 18 19 20 21
SBF-5
(F)
B137
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18
22 23 24 25 26 27 28
BATTERY
E
19 20 21
29 30 31
EN-00939