Subaru Legacy IV (2008 year). Service manual — part 580
EN(H6DO)(diag)-293
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
DR:DTC P1560 BACK-UP VOLTAGE CIRCUIT MALFUNCTION
DTC DETECTING CONDITION:
• Immediately at fault recognition
• GENERAL DESCRIPTION <Ref. to GD(H6DO)-180, DTC P1560 BACK-UP VOLTAGE CIRCUIT MAL-
FUNCTION, Diagnostic Trouble Code (DTC) Detecting Criteria.>
CAUTION:
After repair or replacement of faulty parts, perform Clear Memory Mode <Ref. to EN(H6DO)(diag)-52,
OPERATION, Clear Memory Mode.>, and Inspection Mode <Ref. to EN(H6DO)(diag)-44, PROCEDURE,
Inspection Mode.>.
WIRING DIAGRAM:
SBF-6
MAIN SBF
SBF-7
B72
A7
B2
C23
A3
D2
D1
D7
B5
B19
No. 12
B47
E2
B21
1
2
4
6
5
3
ECM
E
E
3
1
B134
B135
A:
C: B136
D: B137
B:
35
34
52
3
4
1
2
5
6
B47
TO OXYGEN SENSOR
No. 13
A5
36
B72
1
3
4 5 6
2
E
SBF-5
D3
37
MAIN RELAY
BATTERY
IGNITION
SWITCH
EN-06864
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
42
43
36
37
38
39
48
49
50
51
52
53
54
40
41
44
45
46
47
16
10 11 12 13
14 15
25
24
30
9
8
7
17 18 19 20
28
21 22 23
29
32
31
1
2
3
4
6
5
27
26
33 34 35
B136
C:
5
6
7
8
2
1
9
4
3
10
24
22 23
25
11 12 13 14 15
26
27
28
16
17
18 19 20 21
33
34
29
32
30 31
B134
A:
5
6
7
8
2
1
9
4
3
10
24
22 23
25
11 12 13 14 15
26 27
28
16 17 18 19
20 21
29 30 31
32 33
34 35
B135
B:
5
6
7
8
2
1
9
4
3
10
22 23
11 12 13 14 15
24 25
26
16 17
18 19 20 21
27
28 29
30 31
B137
D:
EN(H6DO)(diag)-294
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
Step
Check
Yes
No
1
CHECK INPUT SIGNAL OF ECM.
1) Turn the ignition switch to OFF.
2) Measure the voltage between ECM and
chassis ground.
Connector & terminal
(B135) No. 5 (+) — Chassis ground (–):
Is the voltage 10 V or more?
Repair the poor
contact of ECM
connector.
Go to step 2.
2
CHECK HARNESS BETWEEN ECM AND
MAIN FUSE BOX CONNECTOR.
1) Disconnect the connectors from ECM.
2) Measure the resistance between ECM and
chassis ground.
Connector & terminal
(B135) No. 5 — Chassis ground:
Is the resistance 1 M
: or
more?
Go to step 3.
Repair the ground
short circuit of har-
ness between
ECM and battery
terminal.
3
CHECK FUSE NO. 13.
Is the fuse blown out?
Replace the fuse.
Repair the harness
and connector.
NOTE:
In this case, repair
the following item:
• Open circuit in
harness between
ECM and battery
• Poor contact in
ECM connector
• Poor contact of
battery terminal
EN(H6DO)(diag)-295
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
DS:DTC P1602 CONTROL MODULE PROGRAMMING ERROR
DTC DETECTING CONDITION:
• Two consecutive driving cycles with fault
• GENERAL DESCRIPTION <Ref. to GD(H6DO)-182, DTC P1602 CONTROL MODULE PROGRAMMING
ERROR, Diagnostic Trouble Code (DTC) Detecting Criteria.>
TROUBLE SYMPTOM:
• Engine keeps running at higher speed than specified idle speed.
• Engine keeps running at a lower speed than the specified idle speed.
• Engine stalls.
CAUTION:
After repair or replacement of faulty parts, perform Clear Memory Mode <Ref. to EN(H6DO)(diag)-52,
OPERATION, Clear Memory Mode.>, and Inspection Mode <Ref. to EN(H6DO)(diag)-44, PROCEDURE,
Inspection Mode.>.
WIRING DIAGRAM:
3
4
1
2
5
6
1 2
5
6
7
8
2
1
9
4
3
10
22 23
11 12 13 14 15
24 25
26
16 17
18 19 20 21
27
28 29
30 31
B47
B137
E6
E17
E5
E16
E43
E44
1
2
E5
8
42
B47
MAIN RELAY
1
2
3
5
4
6
48
1
2
E16
1
2
E6
10
ECM
BATTERY
SBF-7
B137
9
43
44
FUEL
INJECTOR
No. 1
1
2
E17
1
2
E43
11
45
12
46
1
2
E44
E
B21
E2
13
47
EN-06776
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
42
43
36
37
38
39
48
49
50
51
52
53
54
40
41
44
45
46
47
FUEL
INJECTOR
No. 2
FUEL
INJECTOR
No. 3
FUEL
INJECTOR
No. 4
FUEL
INJECTOR
No. 5
FUEL
INJECTOR
No. 6
EN(H6DO)(diag)-296
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
Step
Check
Yes
No
1
CHECK FOR ANY OTHER DTC ON DISPLAY. Is any other DTC displayed?
Check the appro-
priate DTC using
the “List of Diag-
nostic Trouble
Code (DTC)”.
<Ref. to
EN(H6DO)(diag)-
81, List of Diagnos-
tic Trouble Code
(DTC).>
Go to step 2.
2
CHECK ENGINE OIL.
Is there a proper amount of
engine oil?
Go to step 3.
Replace engine oil.
<Ref. to
LU(H6DO)-8,
REPLACEMENT,
Engine Oil.>
3
CHECK EXHAUST SYSTEM.
Are there holes or loose bolts
on exhaust system?
Repair the exhaust
system.
Go to step 4.
1 2 3 4
5 6 7 8
9 10 11 12
13 14 15 16
B20
1 2 3 4 5 6
E57
1 2 3 4
5 6 7 8
B122
1 2
7 8
3
4
5
6
B362
36
52
34
35
37
E
E2
B21
E
A5
C21
C1
A29
19
E1
B20
A18
C6
A28
6
4
15
*
*
B122
16
E
38
39
20
D5
D4
A19
D7
D1
A3
D2
D3
3
E57
ELECTRONIC THROTTLE
CONTROL
2
1
5
B134
B362
5
7
6
A:
B137
B136
D:
C:
ECM
*
: TERMINAL No. OPTIONAL ARRANGEMENT
E
SBF-7
BATTERY
ELECTRONIC
THROTTLE
CONTROL RELAY
MAIN RELAY
8
6
4
B47
B47
3
4
1
2
5
6
EN-06873
16
10 11 12 13 14 15
25
24
30
9
8
7
17 18 19 20
28
21 22 23
29
32
31
1
2
3
4
5
6
27
26
33 34 35
B136
C:
5
6
7
8
2
1
9
4
3
10
22 23
11 12 13 14 15
24 25
26
16 17
18 19 20 21
27
28 29
30 31
B137
D:
5
6
7
8
2
1
9
4
3
10
24
22 23
25
11 12 13 14 15
26 27
28
16 17
18 19 20 21
33 34
29
32
30 31
B134
A:
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
42
43
36
37
38
39
48
49
50
51
52
53
54
40
41
44
45
46
47
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст