Subaru Impreza 2003 Service Manual page 1267

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
F: DTC P0037 — HO2S HEATER CONTROL CIRCUIT LOW (BANK 1 SENSOR 2)
—
• DTC DETECTING CONDITION:
• Immediately at fault recognition
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H4DOTC)-48, OP-
ERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H4DOTC)-40, Inspection Mode.>.
• WIRING DIAGRAM:
MAIN RELAY
6
4
5
3
2
1
B47
LHD
B61
REAR
OXYGEN SENSOR
B19
LHD
B260 1
*
2
*
B259
B83
LHD
B :
B135
D : ECM
B137
E :
B84
EN(H4DOTC)-91
BATTERY
LHD
2
F44
1 LHD : 2
*
RHD : 4
LHD : 6
2
*
RHD : 1
3 LHD : 2
*
RHD : 1
LHD : 1
4
*
RHD : 2
LHD : 3
5
*
RHD : 4
6 LHD : 4
*
RHD : 3
RHD
B100
F2
RHD
: LHD : RHD
F60 B22
E3
E
ENGINE (DIAGNOSTICS)
B19 F44
1 2 1 2 3 4
3 4 5 6 7 8
(LHD)
2 1
4 3
(RHD)
: LHD
F60
B22 : RHD
1 2 3 4 5 6
1 2 3 4
5 6 7 8
9 10 11 12
13 14 15 16
B135
4 5 6
1 2 3
10 11 12 13 14 15
20 21 22 23 24
B137
1 2 3 4
8 9 10 11 12 13 14 15 16
17 18 19 20 21
B84
1 2 3 4 5
10 11 12 13 14 15 16 17
22 23 24 25 26 27 28
B259
E
1 2
F2
1 2 3 4 5 6
12 13 14 15 16 17 18 19 20 21 22 23 24
B47
1 2
3 4
5 6
B83
1 2 3
4 5 6
(LHD)
(RHD)
7 8 9
16 17 18 19
25 26 27 28
5 6 7
22 23 24
6 7 8 9
18 19 20 21
29 30 31
7 8 9 10 11
EN-01300