Subaru LEGACY 2006 Manual page 286

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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
CL:DTC P1152 O2 SENSOR CIRCUIT RANGE/PERFORMANCE (LOW) (BANK1
SENSOR1)
DTC DETECTING CONDITION:
• Detected when two consecutive driving cycles with fault occur.
• GENERAL DESCRIPTION <Ref. to GD(H4SO)-185, DTC P1152 O2 SENSOR CIRCUIT RANGE/PER-
FORMANCE (LOW) (BANK1 SENSOR1), Diagnostic Trouble Code (DTC) Detecting Criteria.>
CAUTION:
After repairing or replacing the defective part, perform the Clear Memory Mode <Ref. to EN(H4SO)(di-
ag)-43, OPERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H4SO)(diag)-34, PRO-
CEDURE, Inspection Mode.>.
WIRING DIAGRAM:
OXYGEN SENSOR RELAY
6
4
B21
2
1
50
B327
* : TERMINAL No.
OPTIONAL
ARRANGEMENT
SBF-5
E2
FRONT OXYGEN
REAR OXYGEN
(A/F) SENSOR
SENSOR
E23
E
JOINT
CON-
NECTOR
B138
A: B134 B: B135 C: B136
EN(H4SO)(diag)-249
BATTERY
E22
1
8
E E
20
28
E2
B21
34
42
ECM
ENGINE (DIAGNOSTICS)
E23 E22
1 2
3 2 1
3 4
6 5 4
B138 B327
1 2 3 4 1 2
5 6 7 8 3 4
5 6
A: B134
1 2 3 4 5 6 7
8 9 10 11 12 13 14 15 16 17
18 19 20 21 22 23 24 25 26 27
28 29 30 31 32 33 34
B: B135
2 3 4 5 6 7
9 10 11 12 13 14 15 16 17 18 19
21 22 23 24 25 26 27
29 30 31 32 33 34 35
C: B136
1 2 3 4 5 6
7 8 9 10 11 12 13 14 15 16
17 18 19 20 21 22 23 24 25 26 27
28 29 30 31 32 33 34 35
B21
1 2 3 4 5 6 7 8 9 10 11
12 13 14 15 16 17 18 19 20 21 22
23 24 25 26 27 28 29 30 31 32 33
35 36 37 38 39 40 41
43 44 45 46 47
48 49 50 51 52 53 54
EN-04042