Subaru 2002 IMPREZA Service Manual page 1248

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE (DIAGNOSTICS)
C: DTC P0037 — REAR OXYGEN SENSOR HEATER CIRCUIT MALFUNCTION
—
• DTC DETECTING CONDITION:
• Two consecutive driving cycles with fault
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(TURBO)-45, OP-
ERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(TURBO)-42, 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
C : ECM
B136
D :
B137
EN(TURBO)-88
BATTERY
2 LHD
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
LHD : 4
6
*
RHD : 3
RHD
B209
F76
RHD
: LHD : RHD
F60 B22
E3
E
B19 F44
1 2 3 4
1 2
5 6 7 8
3 4
(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
1 2 3 4 5 6
10 11 12 13 14 15
20 21 22 23 24
B136
1 2 3 4
8 9 10 11 12 13 14 15 16
17 18 19 20 21
B137
1 2 3 4 5 6
10 11 12 13 14 15 16 17
22 23 24 25 26 27 28
B209
E
A1 A2 A4 A5
A3
B1 B2 B4 B5
C3
C1 C2 C4 C5
D1 D2 D4
D5
E1 E5
F1 F5
G1G2 G4 G5
H1 H2 H4 H5
H3
I1 I2 I4 I5
J3
J1 J2 J4 J5
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
7 8 9
18 19 20 21
29 30 31
B259
1 2
EN1434