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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
H: DTC P0037 HO2S HEATER CONTROL CIRCUIT LOW (BANK 1 SENSOR 2)
DTC DETECTING CONDITION:
Detects when malfunction occurs in 2 continuous driving cycles.
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H6DO)(diag)-41,
OPERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H6DO)(diag)-34, PROCEDURE,
Inspection Mode.>.
WIRING DIAGRAM:
MAIN RELAY
5
3
B47
: TERMINAL No.
*
RANDOM ARRANGEMENT
E25
E61
B47
1
2
1 2
3
4
3 4
5
6
B83
B22
1 2 3 4
1 2 3 4
5 6 7 8
5 6 7 8
9 10 11 12
13 14 15 16
14
B22
E3
REAR
OXYGEN
SENSOR LH
E25
A:
B134
B:
B135
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
C:
B136
1
2
3
4
5
7 8
9
10
11 12 13 14 15
17 18 19 20 21
22 23
24
25
26 27
28
29
30
31
32
33 34
EN(H6DO)(diag)-85
REAR
OXYGEN
SENSOR RH
E61
C:
B136
ECM
D:
B137
B21
E2
E
B:
B135
1
2
3
4
5
6
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
D:
B137
6
1
2
3
4
5
16
8
9
10
11 12 13 14 15
18 19 20 21
22 23
35
26
27
28 29
ENGINE (DIAGNOSTICS)
BATTERY
SBF-5
E3
B22
*
*
*
B83
B21
7
1 2 3 4
5 6 7 8
12 13 14 15
16 17 18 19
23 24 25 26 27 28 29 30 31 32 33
34
35
36
37
38
42
43
44 45
48
49
50
51
52
6
7
16 17
24 25
30 31
E
9 10 11
20 21 22
39
40
41
46
47
53
54
EN-03495
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