Subaru Legacy IV (2008 year). Service manual — part 367

EN(H4DOTC)(diag)-289

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

ENGINE (DIAGNOSTICS)

DD:DTC P2009 INTAKE MANIFOLD RUNNER CONTROL CIRCUIT LOW (BANK 1)

DTC DETECTING CONDITION:
• Immediately at fault recognition
• GENERAL DESCRIPTION <Ref. to GD(H4DOTC)-192, DTC P2009 INTAKE MANIFOLD RUNNER CON-
TROL CIRCUIT LOW (BANK 1), Diagnostic Trouble Code (DTC) Detecting Criteria.>

CAUTION:
After repair or replacement of faulty parts, perform Clear Memory Mode <Ref. to EN(H4DOTC)(diag)-
52, OPERATION, Clear Memory Mode.>, and Inspection Mode <Ref. to EN(H4DOTC)(diag)-43, PRO-
CEDURE, Inspection Mode.>.
WIRING DIAGRAM:

EN-05684

E55

B21

E2

E55

B21

B137

23

22

8

19

5

4

B137

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

1

3

2

4 5

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

TUMBLE GENERATOR

VALVE ASSY RH

(WITH BUILT-IN SENSOR)

ECM

EN(H4DOTC)(diag)-290

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

ENGINE (DIAGNOSTICS)

Step

Check

Yes

No

1

CHECK HARNESS BETWEEN ECM AND
TUMBLE GENERATOR VALVE ASSEMBLY
RH CONNECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from ECM.
3) Measure the voltage between ECM and
chassis ground.

Connector & terminal

(B137) No. 22 (+) — Chassis ground (–):
(B137) No. 23 (+) — Chassis ground (–):

Is the voltage 5 V or more?

Repair the short
circuit to power in
the harness
between ECM and
tumble generator
valve assembly
RH.

Replace the tum-
ble generator valve
assembly RH.
<Ref. to
FU(H4DOTC)-41,
Tumble Generator
Valve Assembly.>

EN(H4DOTC)(diag)-291

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

ENGINE (DIAGNOSTICS)

DE:DTC P2011 INTAKE MANIFOLD RUNNER CONTROL CIRCUIT / OPEN

(BANK 2)

DTC DETECTING CONDITION:
• Immediately at fault recognition
• GENERAL DESCRIPTION <Ref. to GD(H4DOTC)-193, DTC P2011 INTAKE MANIFOLD RUNNER CON-
TROL CIRCUIT / OPEN (BANK 2), Diagnostic Trouble Code (DTC) Detecting Criteria.>

CAUTION:
After repair or replacement of faulty parts, perform Clear Memory Mode <Ref. to EN(H4DOTC)(diag)-
52, OPERATION, Clear Memory Mode.>, and Inspection Mode <Ref. to EN(H4DOTC)(diag)-43, PRO-
CEDURE, Inspection Mode.>.
WIRING DIAGRAM:

EN-05685

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

E2

E51

B21

B137

13

12

29

30

5

4

E51

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

1

3

2

4 5

TUMBLE GENERATOR

VALVE ASSY LH

(WITH BUILT-IN SENSOR)

ECM

EN(H4DOTC)(diag)-292

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

ENGINE (DIAGNOSTICS)

Step

Check

Yes

No

1

CHECK HARNESS BETWEEN ECM AND
TUMBLE GENERATOR VALVE ASSEMBLY
LH CONNECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from ECM and
tumble generator valve assembly LH.
3) Measure the resistance of harness between
ECM and tumble generator valve assembly LH.

Connector & terminal

(B137) No. 12 — (E51) No. 5:
(B137) No. 13 — (E51) No. 4:

Is the resistance less than 1

:? Go to step 2.

Repair the harness
and connector.

NOTE:
In this case, repair
the following item:
• Open circuit in
harness between
ECM and tumble
generator valve
assembly LH con-
nector
• Poor contact of
coupling connector

2

CHECK HARNESS BETWEEN ECM AND
TUMBLE GENERATOR VALVE ASSEMBLY
LH CONNECTOR.
Measure the resistance between ECM and
chassis ground.

Connector & terminal

(B137) No. 12 — Chassis ground:
(B137) No. 13 — Chassis ground:

Is the resistance 1 M

: or

more?

Go to step 3.

Repair the short
circuit to ground in
harness between
ECM and tumble
generator valve
assembly LH con-
nector.

3

CHECK POOR CONTACT.
Check for poor contact of tumble generator
valve assembly LH connector.

Is there poor contact in the tum-
ble generator valve assembly
LH connector?

Repair the poor
contact of tumble
generator valve
assembly LH con-
nector.

Replace the tum-
ble generator valve
assembly LH.
<Ref. to
FU(H4DOTC)-41,
Tumble Generator
Valve Assembly.>