Diagnostic Procedure With Diagnostic Trouble Code (Dtc) - Subaru Forester 2004 Service Manual

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

ENGINE (DIAGNOSTIC)
18.Diagnostic Procedure with Diagnostic Trouble Code (DTC)
A: DTC P0031 HO2S HEATER CONTROL CIRCUIT LOW (BANK 1 SENSOR 1)
DTC DETECTING CONDITION:
Immediately at fault recognition.
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
FRONT OXYGEN
(A/F) SENSOR
B262
B134 ECM
EN(H4DOTC 2.5)-70
BATTERY
SBF-5
B21
E2
E
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