Subaru Forester 2004 Service Manual page 110

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Q: DTC P0134 O
SOR 1)
DTC DETECTING CONDITION:
Detect as soon as the malfunction occurs.
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H4DOTC 2.5)-42,
OPERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H4DOTC 2.5)-35, OPERATION,
Inspection Mode.>.
WIRING DIAGRAM:
MAIN RELAY
6
4
5
3
2
1
B47
SENSOR CIRCUIT NO ACTIVITY DETECTED (BANK 1 SEN-
2
FRONT OXYGEN
(A/F) SENSOR
B262
B134 ECM
EN(H4DOTC 2.5)-109
BATTERY
SBF-5
B21
E2
E
ENGINE (DIAGNOSTIC)
B262
2 1
4 3
B47
1
3
5
B21
1 2 3 4
5 6 7 8
9 10 11 12
13 14 15 16
B134
1 2 3 4
8 9 10 11 12 13 14 15
18 19 20 21 22 23
28 29 30 31 32
E
2
4
6
5 6 7
16 17
24 25 26 27
33 34
EN-02359