Subaru Legacy (2005 year). Manual - part 341

 

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Subaru Legacy (2005 year). Manual - part 341

 

 

EN(H4DOTC)(diag)-133

ENGINE (DIAGNOSTICS)

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

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(H4DOTC)(diag
)-62, List of Diag-
nostic Trouble 
Code (DTC).>

Go to step 2.

2

CHECK HARNESS BETWEEN CRANK-
SHAFT POSITION SENSOR AND ECM CON-
NECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from crankshaft 
position sensor.
3) Measure the resistance of harness 
between crankshaft position sensor connector 
and engine ground.

Connector & terminal

(E10) No. 1 — (B135) No. 10:
(E10) No. 2 — (B135) No. 22:

Is the resistance more than 
100 k

Ω?

Repair the har-
ness and connec-
tor.

NOTE:
In this case, repair
the following:
• Open circuit of 
harness between 
crankshaft posi-
tion sensor and 
ECM connector
• Poor contact in 
ECM connector
• Poor contact in 
coupling connector

Go to step 3.

3

CHECK HARNESS BETWEEN CRANK-
SHAFT POSITION SENSOR AND ECM CON-
NECTOR.
Measure the resistance of harness between 
crankshaft position sensor connector and 
engine ground.

Connector & terminal

(E10) No. 1 — Engine ground:
(E10) No. 2 — Engine ground:

Is the resistance more than 1 
M

Ω?

Go to step 4.

Repair the ground 
short circuit of har-
ness between 
crankshaft posi-
tion sensor and 
ECM connector.

NOTE:
The harness be-
tween both con-
nectors are
shielded. Repair
the ground short
circuit of harness
with shield.

4

CHECK CONDITION OF CRANKSHAFT PO-
SITION SENSOR.

Is the crankshaft position sen-
sor installation bolt tightened 
securely?

Go to step 5.

Tighten the crank-
shaft position sen-
sor installation bolt 
securely.

5

CHECK CRANKSHAFT POSITION SENSOR.
1) Remove the crankshaft position sensor.
2) Measure the resistance between connector 
terminals of crankshaft position sensor.

Terminals

No. 1 — No. 2:

Is the resistance 1 — 4 k

Ω?

Repair the poor 
contact in crank-
shaft position sen-
sor connector.

Replace the crank-
shaft position sen-
sor. <Ref. to 
FU(H4DOTC)-23, 
Crankshaft Posi-
tion Sensor.>

EN(H4DOTC)(diag)-134

ENGINE (DIAGNOSTICS)

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

AH:DTC P0340 CAMSHAFT POSITION SENSOR “A” CIRCUIT (BANK 1 OR SIN-

GLE SENSOR)

DTC DETECTING CONDITION:
Immediately at fault recognition
TROUBLE SYMPTOM:
• Engine stalls.
• Failure of engine to start

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-03526

B47

1

2

4

6

3

5

E

E1

B20

3

C35

SBF-7

E35

E1

B20

2

E36

B21

E2

1

19

3

B9

*

*

B83

2

1

ECM

B135

B :

B136

C :

48

1

B20

E36

3

4

1

2

5

6

B47

1 2 3

1 2 3 4
5 6 7 8

B83

B136

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

35

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

E35

BATTERY

INTAKE
CAMSHAFT
POSITION
SENSOR RH

INTAKE
CAMSHAFT
POSITION
SENSOR LH

MAIN RELAY

B :

C :

1 2 3 4
5 6 7 8
9 10 11 12

13 14 15 16

2

B8

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

*

: TERMINAL No. RANDOM ARRANGEMENT

EN(H4DOTC)(diag)-135

ENGINE (DIAGNOSTICS)

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

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(H4DOTC)(diag
)-62, List of Diag-
nostic Trouble 
Code (DTC).>

Go to step 2.

2

CHECK POWER SUPPLY OF CAMSHAFT 
POSITION SENSOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from camshaft 
position sensor.
3) Measure the voltage between camshaft 
position sensor connector and engine ground.

Connector & terminal

(E36) No. 1 (+) — Engine ground (

−

):

Is the voltage more than 10 V? Repair the battery 

short circuit 
between main 
relay connector 
and camshaft 
position sensor 
connector.

Go to step 3.

3

CHECK POWER SUPPLY OF CAMSHAFT 
POSITION SENSOR.
1) Turn the ignition switch to ON.
2) Measure the voltage between camshaft 
position sensor connector and engine ground.

Connector & terminal

(E36) No. 1 (+) — Engine ground (

−

):

Is the voltage more than 10 V? Go to step 4.

Repair the open or 
ground short cir-
cuit between main 
relay connector 
and camshaft 
position sensor 
connector.

4

CHECK HARNESS BETWEEN CAMSHAFT 
POSITION SENSOR CONNECTOR AND 
ECM.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from ECM.
3) Measure the resistance between camshaft 
position sensor connector and ECM.

Connector & terminal

(E36) No. 2 — (B135) No. 9:
(E36) No. 3 — (B136) No. 35:

Is the resistance less than 1 
Ω?

Go to step 5.

Repair the open 
circuit between 
camshaft position 
sensor and ECM.

5

CHECK HARNESS BETWEEN CAMSHAFT 
POSITION SENSOR CONNECTOR AND 
ECM.
Measure the resistance between camshaft 
position sensor connector and engine ground.

Connector & terminal

(E36) No. 2 — Engine ground:

Is the resistance more than 1 
M

Ω?

Go to step 6.

Repair the ground 
short circuit 
between camshaft 
position sensor 
and ECM.

6

CHECK CONDITION OF CAMSHAFT POSI-
TION SENSOR.

Is the camshaft position sensor 
installation bolt tightened 
securely?

Go to step 7.

Tighten the cam-
shaft position sen-
sor installation bolt 
securely.

7

CHECK CAMSHAFT POSITION SENSOR.
Check waveform of camshaft position sensor. 
<Ref. to EN(H4DOTC)(diag)-15, Engine Con-
trol Module (ECM) I/O Signal.>

Is there any abnormality in 
waveform?

Replace the cam-
shaft position sen-
sor. <Ref. to 
FU(H4DOTC)-23, 
Crankshaft Posi-
tion Sensor.>

Go to step 8.

8

CHECK POOR CONTACT.
Check poor contact in ECM connector.

Is there poor contact in ECM 
connector?

Repair the poor 
contact in ECM 
connector.

Replace the ECM. 
<Ref. to 
FU(H4DOTC)-34, 
Engine Control 
Module (ECM).>

EN(H4DOTC)(diag)-136

ENGINE (DIAGNOSTICS)

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

AI: DTC P0345 CAMSHAFT POSITION SENSOR “A” CIRCUIT (BANK 2)

DTC DETECTING CONDITION:
Immediately at fault recognition
TROUBLE SYMPTOM:
• Engine stalls.
• Failure of engine to start

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-03526

B47

1

2

4

6

3

5

E

E1

B20

3

C35

SBF-7

E35

E1

B20

2

E36

B21

E2

1

19

3

B9

*

*

B83

2

1

ECM

B135

B :

B136

C :

48

1

B20

E36

3

4

1

2

5

6

B47

1 2 3

1 2 3 4
5 6 7 8

B83

B136

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

35

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

E35

BATTERY

INTAKE
CAMSHAFT
POSITION
SENSOR RH

INTAKE
CAMSHAFT
POSITION
SENSOR LH

MAIN RELAY

B :

C :

1 2 3 4
5 6 7 8
9 10 11 12

13 14 15 16

2

B8

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

*

: TERMINAL No. RANDOM ARRANGEMENT

 

 

 

 

 

 

 

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