Subaru Legacy (2005 year). Service manual — part 474
EN(H6DO)(diag)-209
ENGINE (DIAGNOSTICS)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
BQ:DTC P0462 FUEL LEVEL SENSOR “A” CIRCUIT LOW
NOTE:
For the diagnostic procedure, refer to DTC P0463. <Ref. to EN(H6DO)(diag)-209, DTC P0463 FUEL LEVEL
SENSOR “A” CIRCUIT HIGH, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
BR:DTC P0463 FUEL LEVEL SENSOR “A” CIRCUIT HIGH
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.>.
BS:DTC P0500 VEHICLE SPEED SENSOR “A”
DTC DETECTING CONDITION:
Immediately at fault recognition
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.>.
BT:DTC P0512 STARTER REQUEST CIRCUIT
DTC DETECTING CONDITION:
Detects when malfunction occurs in 2 continuous driving cycles.
TROUBLE SYMPTOM:
Failure of engine to start
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.>.
Step
Check
Yes
No
1
CHECK ANY OTHER DTC ON DISPLAY.
Is DTC P0462 or P0463 dis-
played on the Subaru Select
Monitor?
Check the combi-
nation meter.
<Ref. to IDI-15,
Combination
Meter.>
Temporary poor
contact occurs.
Step
Check
Yes
No
1
CHECK DTC OF ABS.
Check DTC of ABS.
Is DTC of ABS displayed?
Perform the diag-
nosis according to
DTC. <Ref. to
ABS(diag)-38, List
of Diagnostic Trou-
ble Code (DTC).>
Repair the poor
contact in ECM.
EN(H6DO)(diag)-210
ENGINE (DIAGNOSTICS)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
WIRING DIAGRAM:
Step
Check
Yes
No
1
CHECK HARNESS BETWEEN IGNITION
SWITCH AND ECM.
1) Disconnect the connector from ECM.
2) Measure the voltage between ECM and
chassis ground.
Connector & terminal
(B135) No. 32 (+) — Chassis ground (
−
):
Is the voltage more than 10 V? Repair the battery
short circuit of har-
ness between igni-
tion switch and
ECM.
Repair the poor
contact in ECM.
EN-03489
D8
B32
No.21
B225
MAIN SBF
SBF-6
E
1
3
2
4
ECM
B137
D:
B135
B:
B72
B14
M
2
3
B225
B137
B72
D:
B135
B:
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
39 40
37
38
1
2
9
3
4
5
6
7
8
1
2
7
8 9
5
6
3
4
10 11 12
19 20 21
29
30 31
13 14 15 16 17
27
28
18
22 23
24 25
26
1
2
7
8 9
5
6
3
4
10 11 12
19
20 21
29 30 31
13 14 15 16 17
27
28
18
22 23
24 25
26
32 33
34 35
1
3
4 5 6
2
BATTERY
IGNITION
SWITCH
STARTER
RELAY
STARTER MOTOR
*
*
*
*
*
LHD: 15
RHD: 16
1
*
LHD: 16
RHD: 15
2
*
LHD: 13
RHD: 14
3
*
LHD: 14
RHD: 13
4
EN(H6DO)(diag)-211
ENGINE (DIAGNOSTICS)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
BU:DTC P0519 IDLE AIR CONTROL SYSTEM PERFORMANCE
DTC DETECTING CONDITION:
Immediately at fault recognition
TROUBLE SYMPTOM:
Engine keeps running at higher revolution than specified idling revolution.
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.>.
BV:DTC P0600 SERIAL COMMUNICATION LINK
NOTE:
For the diagnostic procedure, refer to LAN section. <Ref. to LAN(diag)-2, Basic Diagnostic Procedure.>
Step
Check
Yes
No
1
CHECK ANY OTHER DTC ON DISPLAY.
Is any other DTC displayed?
Check DTC using
the List of Diag-
nostic Trouble
Code (DTC). <Ref.
to
EN(H6DO)(diag)-
66, List of Diag-
nostic Trouble
Code (DTC).>
NOTE:
In this case, it is
not necessary to
inspect DTC
P0519.
2
CHECK AIR INTAKE SYSTEM.
1) Turn the ignition switch to ON.
2) Start and idle the engine.
3) Check the following items.
• Loose installation of intake manifold and
throttle body
• Cracks of intake manifold gasket and throttle
body gasket
• Disconnections of vacuum hoses
Is there any fault in air intake
system?
Repair air suction
and leaks.
3
CHECK ELECTRONIC THROTTLE CON-
TROL.
1) Turn the ignition switch to OFF.
2) Remove the electronic throttle control.
3) Check the electronic throttle control.
Are foreign matters found
inside the electronic throttle
control?
Remove foreign
matters from the
electronic throttle
control.
Perform the diag-
nosis of DTC
P2101.
EN(H6DO)(diag)-212
ENGINE (DIAGNOSTICS)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
BW:DTC P0604 INTERNAL CONTROL MODULE RANDAM ACCESS MEMORY
(RAM) ERROR
DTC DETECTING CONDITION:
Immediately at fault recognition
TROUBLE SYMPTOM:
• Engine does not start.
• Engine stalls.
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:
EN-03490
BATTERY
IGNITION
SWITCH
MAIN RELAY
SBF-6
MAIN SBF
SBF-7
B72
B6
B5
D16
A6
D2
A7
B12
D3
D7
D1
B19
D14
No.12
B47
E2
B21
ECM
E
E
3
6
B134
B135
A:
D: B137
B:
B4
52
37
36
34
12
3
4
1
2
5
6
B47
No.13
B1
35
B134
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
B135
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
B137
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
B21
1 2 3 4
12 13 14 15
5 6 7 8
16 17 18 19
9 10 11
20 21 22
23 24 25 26 27 28 29 30 31 32 33
35
34
37
36
39
38
41
40
43
42
44
45
47
46
49
48
51
50
53
52
54
B72
1
3
4 5 6
2
A:
B:
D:
SBF-5
A4
A5
54
3
5
6
4
1
2
TO OXYGEN SENSOR
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