Subaru Legacy (2005 year). Manual - part 353

EN(H4DOTC)(diag)-181

ENGINE (DIAGNOSTICS)

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

Step

Check

Yes

No

1

CHECK HARNESS BETWEEN ECM AND OIL 
FLOW CONTROL SOLENOID VALVE.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from ECM and 
oil flow control solenoid valve.
3) Measure the resistance between ECM and 
oil flow control solenoid valve.

Connector & terminal

(B134) No. 21 — (E66) No. 1:
(B134) No. 31 — (E66) No. 2:

Is the resistance less than 1 
Ω?

Go to step 2.

Repair the open 
circuit of harness 
between ECM and 
oil flow control 
solenoid valve 
connector.

NOTE:
In this case, repair
the following:
• Open circuit of 
harness between 
ECM and oil flow 
control solenoid 
valve connector
• Poor contact in 
coupling connector

2

CHECK OIL FLOW CONTROL SOLENOID 
VALVE.
1) Disconnect the oil flow control solenoid 
valve connector.
2) Measure the resistance between oil flow 
control solenoid valve terminals.

Terminals

No. 1 — No. 2:

Is the resistance 6 — 12 

Ω?

Repair the poor 
contact in ECM 
and oil flow con-
trol solenoid valve.

Replace the oil 
flow control sole-
noid valve. <Ref. 
to ME(H4DOTC)-
56, Camshaft.>

EN(H4DOTC)(diag)-182

ENGINE (DIAGNOSTICS)

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

BL:DTC P2095 EXHAUST CAMSHAFT POSITION ACTUATOR CONTROL CIR-

CUIT HIGH (BANK 2)

DTC DETECTING CONDITION:
Immediately at fault recognition
TROUBLE SYMPTOM:
Erroneous idling

CAUTION:
After repair or replacement of faulty parts, perform Clear Memory Mode <Ref. to EN(H4DOTC)(diag)-
37, OPERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H4DOTC)(diag)-30, PROCE-
DURE, Inspection Mode.>.
WIRING DIAGRAM:

EN-01963

B21

E2

B134

E66

31

2

1

30

29

E66

B21

1 2

21

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

ECM

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

OIL FLOW CONTROL 
SOLENOID VALVE LH

EN(H4DOTC)(diag)-183

ENGINE (DIAGNOSTICS)

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

BM:DTC P2101 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT RANGE/

PERFORMANCE

DTC DETECTING CONDITION:
Immediately at fault recognition
TROUBLE SYMPTOM:
• Erroneous idling
• Poor driving performance
• Engine stalls.

Step

Check

Yes

No

1

CHECK HARNESS BETWEEN ECM AND OIL 
FLOW CONTROL SOLENOID VALVE.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from ECM and 
oil flow control solenoid valve.
3) Measure the resistance between oil flow 
control solenoid valve and engine ground.

Connector & terminal

(E66) No. 1 — Engine ground:
(E66) No. 2 — Engine ground:

Is the resistance more than 1 
M

Ω?

Go to step 2.

Repair the short 
circuit between 
ECM and oil flow 
control solenoid 
valve connector.

2

CHECK OIL FLOW CONTROL SOLENOID 
VALVE.
1) Disconnect the oil flow control solenoid 
valve connector.
2) Measure the resistance between oil flow 
control solenoid valve terminals.

Terminals

No. 1 — No. 2:

Is the resistance 6 — 12 

Ω?

Repair the poor 
contact in ECM 
and oil flow con-
trol solenoid valve.

Replace the oil 
flow control sole-
noid valve. <Ref. 
to ME(H4DOTC)-
56, Camshaft.>

EN(H4DOTC)(diag)-184

ENGINE (DIAGNOSTICS)

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

WIRING DIAGRAM:

EN-03524

SBF-7

B135

B:

B137

B136

D:

B362

B84

B138

B122

E1

B20

E57

C:

B135

B362

B20

B21

E57

B84

B122

B138

B137

B136

E

E

D6

B35

16

15

*

*

*

*

7
3

E2

B21

39

38

19

20

35

36

37

4

6

1

2

3

5

D4

D5

C35

C16

B1

B4

D1

D2

D3

C29

C18

5

8

7

6

1 2 3 4
5 6 7 8
9 10 11 12

13 14 15 16

1 2

7 8

3
4

5
6

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

34 35

36 37 38 39 40 41

48 49

50 51 52 53 54

42 43

44 45

46 47

26 27 28 29 30 31 32 33

1 2 3 4
5 6 7 8

1 2 3 4 5 6

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

2

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

7

32 33 34 35

B:

D:

C:

ECM

BATTERY

MAIN RELAY

ELECTRONIC
THROTTLE 
CONTROL RELAY

ELECTRONIC
THROTTLE 
CONTROL

*

: TERMINAL No. RANDOM ARRANGEMENT