Subaru Impreza 2004 - Page 386

EN(H4SO)(diag)-80
ENGINE (DIAGNOSTICS)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
19.Diagnostic Procedure with Diagnostic Trouble Code (DTC)
A: DTC P0030 HO2S HEATER CONTROL CIRCUIT (BANK 1 SENSOR 1)
• DTC DETECTING CONDITION:
• Two consecutive driving cycles with fault
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H4SO)(diag)-47,
OPERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H4SO)(diag)-40, Inspection
Mode.>.
• WIRING DIAGRAM:
EN-01421
B18
34
12
56
B47
F44
123
4
5 6 7 8
B136 B135
12
34
B22
123
4
56
7
8
9
10
11 12
13
14 15 16
SBF-5
E
E
B47
B18
6
4
5
3
2
1
4
3
1 2
B23 C13 C22
C6
C17
C16
C5
8
B:
C:
B135
B136
B22
E3
ECM
BATTERY
B61 F44
2
FRONT OXYGEN
(A/F) SENSOR
MAIN RELAY
567
8
21
9
4
3
10
24
22 23
25
11 12 13 14 15
26 27
28
16
17 18 19
20 21
5
2
8
4
3
9
2320 21
10 11
22
16
17
24
25
12
13
6
26
19
15
14
1
7
18
LHD
LHD
RHD RHD