Subaru Legacy (2005 year). Service manual — part 230

EN(H4SO 2.5)(diag)-205

ENGINE (DIAGNOSTICS)

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

BR:DTC P2006 INTAKE MANIFOLD RUNNER CONTROL STUCK CLOSED

(BANK 1)

DTC DETECTING CONDITION:
Immediately at fault recognition

CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H4SO 2.5)(diag)-
40, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H4SO 2.5)(diag)-33, Inspection Mode.>.

BS:DTC P2007 INTAKE MANIFOLD RUNNER CONTROL STUCK CLOSED

(BANK 2)

DTC DETECTING CONDITION:
Immediately at fault recognition

CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H4SO 2.5)(diag)-
40, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H4SO 2.5)(diag)-33, Inspection Mode.>.

Step

Check

Yes

No

1

CHECK ANY OTHER DTC ON DISPLAY.

Is any other DTC displayed?

Inspect the rele-
vant DTC using
“List of Diagnostic
Trouble Code
(DTC)”. <Ref. to
EN(H4SO
2.5)(diag)-69, List
of Diagnostic Trou-
ble Code (DTC).>

Go to step 2.

2

CHECK TUMBLE GENERATOR VALVE RH.
1) Remove the tumble generator valve assem-
bly.
2) Check the tumble generator valve body.

Does the tumble generator
valve move smoothly? (No dirt,
no foreign material clogged)

Replace the tum-
ble generator valve
assembly. <Ref. to
FU(H4SO 2.5)-28,
Tumble Generator
Valve Assembly.>

Clean the tumble
generator valve.

Step

Check

Yes

No

1

CHECK ANY OTHER DTC ON DISPLAY.

Is any other DTC displayed?

Inspect the rele-
vant DTC using
“List of Diagnostic
Trouble Code
(DTC)”. <Ref. to
EN(H4SO
2.5)(diag)-69, List
of Diagnostic Trou-
ble Code (DTC).>

Go to step 2.

2

CHECK TUMBLE GENERATOR VALVE LH.
1) Remove the tumble generator valve assem-
bly.
2) Check the tumble generator valve body.

Does the tumble generator
valve move smoothly? (No dirt,
no foreign material clogged)

Replace the tum-
ble generator valve
assembly. <Ref. to
FU(H4SO 2.5)-28,
Tumble Generator
Valve Assembly.>

Clean the tumble
generator valve.

EN(H4SO 2.5)(diag)-206

ENGINE (DIAGNOSTICS)

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

BT:DTC P2008 INTAKE MANIFOLD RUNNER CONTROL CIRCUIT / OPEN

(BANK 1)

DTC DETECTING CONDITION:
Immediately at fault recognition

CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H4SO 2.5)(diag)-
40, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H4SO 2.5)(diag)-33, Inspection Mode.>.
WIRING DIAGRAM:

EN-02468

E55

E2

E55

B21

B134 ECM

18

TUMBLE
GENERATOR VALVE
ACTUATOR RH

19

32

21

1

2

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

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

1 2

EN(H4SO 2.5)(diag)-207

ENGINE (DIAGNOSTICS)

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

Step

Check

Yes

No

1

CHECK HARNESS BETWEEN ECM AND
TUMBLE GENERATOR VALVE ACTUATOR
CONNECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from tumble gen-
erator valve and ECM connector.
3) Measure the resistance between tumble
generator valve actuator and ECM connector.

Connector & terminal

(E55) No. 1 — (B134) No. 19:
(E55) No. 2 — (B134) No. 18:

Is the resistance less than 1
Ω?

Go to step 2.

Repair the open
circuit between
ECM and tumble
generator valve
connector.

NOTE:
In this case, repair
the following:
• Open circuit of
harness between
ECM and tumble
generator valve
actuator connector
• Poor contact in
coupling connector

2

CHECK POOR CONTACT.
Check poor contact in tumble generator valve
actuator connector.

Is there poor contact in tumble
generator valve actuator con-
nector?

Repair the poor
contact in tumble
generator valve
actuator connec-
tor.

Replace the tum-
ble generator valve
actuator. <Ref. to
FU(H4SO 2.5)-29,
Tumble Generator
Valve Actuator.>

EN(H4SO 2.5)(diag)-208

ENGINE (DIAGNOSTICS)

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

BU:DTC P2009 INTAKE MANIFOLD RUNNER CONTROL CIRCUIT LOW (BANK

1)

DTC DETECTING CONDITION:
Immediately at fault recognition

CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H4SO 2.5)(diag)-
40, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H4SO 2.5)(diag)-33, Inspection Mode.>.
WIRING DIAGRAM:

EN-02468

E55

E2

E55

B21

B134 ECM

18

TUMBLE
GENERATOR VALVE
ACTUATOR RH

19

32

21

1

2

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

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

1 2