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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
BW:DTC P0506 IDLE AIR CONTROL SYSTEM RPM LOWER THAN EXPECTED
DTC DETECTING CONDITION:
• Detected when two consecutive driving cycles with fault occur.
• GENERAL DESCRIPTION <Ref. to GD(H4SO)-160, DTC P0506 IDLE AIR CONTROL SYSTEM RPM
LOWER THAN EXPECTED, Diagnostic Trouble Code (DTC) Detecting Criteria.>
TROUBLE SYMPTOM:
• Hard to start the engine.
• Engine does not start.
• Erroneous idling
• Engine stalls.
CAUTION:
After repairing or replacing the defective parts, perform the Clear Memory Mode <Ref. to
EN(H4SO)(diag)-47, OPERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H4SO)(di-
ag)-38, PROCEDURE, Inspection Mode.>.
WIRING DIAGRAM:
ELECTRONIC
THROTTLE
CONTROL RELAY
E
B309
B122
1 2
1 2 3 4
3 4
5 6 7 8
B61
F44
8
B309
2
2
1
3
MAIN RELAY
4
ECM
A:
B134
C:
B136
D:
B137
B21
E100
ELECTRONIC
THROTTLE
E57
CONTROL
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
34 35 36 37 38
39
40
41
42
43
44
45
46 47
48 49 50 51 52 53 54
17
28
EN(H4SO)(diag)-225
ENGINE (DIAGNOSTICS)
BATTERY
SBF-5
2
1
B122
E
E57
1
2
1 2 3 4 5 6
8
9
10 11 12 13 14 15
18
19 20
28 29
30
C:
B136
1
2
3
4
5
6
1
8 9
7
8 9
10 11 12
13 14 15 16
18
19 20 21
22 23 24 25 26
27
18
19 20 21
29 30
31
32 33 34 35
26
27
E
A:
B134
3
4
5
6
7
16
17
21
22
23 24
25
26 27
31
32
33 34
D:
B137
2
3
4
5
6
7
10 11 12
13 14 15 16 17
22 23
24 25
28
29
30 31
EN-05392
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