Subaru Legacy (2005 year). Manual - part 343

EN(H4DOTC)(diag)-141

ENGINE (DIAGNOSTICS)

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

AK:DTC P0365 CAMSHAFT POSITION SENSOR “B” CIRCUIT (BANK 1)

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-01956

E1

E65

B20

2

1

11

10

B135

ECM

20

28

21

30

29

E

E65

1 2

B20

EXHAUST
CAMSHAFT
POSITION
SENSOR LH

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

E62

2

1

EXHAUST
CAMSHAFT
POSITION
SENSOR RH

12

9

1 2 3 4
5 6 7 8
9 10 11 12

13 14 15 16

E62

EN(H4DOTC)(diag)-142

ENGINE (DIAGNOSTICS)

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

Step

Check

Yes

No

1

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

Connector & terminal

(E62) No. 1 — (B135) No. 29:
(E62) No. 2 — (B135) No. 21:

Is the resistance less than 1 
Ω?

Go to step 2.

Repair the har-
ness and connec-
tor.

NOTE:
In this case, repair
the following:
• Open circuit of 
harness between 
camshaft position 
sensor and ECM 
connector
• Poor contact in 
ECM connector
• Poor contact in 
coupling connector

2

CHECK HARNESS BETWEEN CAMSHAFT 
POSITION SENSOR AND ECM CONNEC-
TOR.
Measure the resistance of harness between 
camshaft position sensor connector and 
engine ground.

Connector & terminal

(E62) No. 1 — Engine ground:
(E62) No. 2 — Engine ground:

Is the resistance more than 1 
M

Ω?

Go to step 3.

Repair the ground 
short circuit of har-
ness between 
camshaft position 
sensor and ECM 
connector.

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

3

CHECK CONDITION OF CAMSHAFT POSI-
TION SENSOR.

Is the camshaft position sensor 
installation bolt tightened 
securely?

Go to step 4.

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

4

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

Terminals

No. 1 — No. 2:

Is the resistance 1 — 4 k

Ω?

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

Replace the cam-
shaft position sen-
sor. <Ref. to 
FU(H4DOTC)-24, 
Camshaft Position 
Sensor.>

EN(H4DOTC)(diag)-143

ENGINE (DIAGNOSTICS)

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

AL:DTC P0390 CAMSHAFT POSITION SENSOR “B” 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-01956

E1

E65

B20

2

1

11

10

B135

ECM

20

28

21

30

29

E

E65

1 2

B20

EXHAUST
CAMSHAFT
POSITION
SENSOR LH

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

E62

2

1

EXHAUST
CAMSHAFT
POSITION
SENSOR RH

12

9

1 2 3 4
5 6 7 8
9 10 11 12

13 14 15 16

E62

EN(H4DOTC)(diag)-144

ENGINE (DIAGNOSTICS)

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

Step

Check

Yes

No

1

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

Connector & terminal

(E65) No. 1 — (B135) No. 28:
(E65) No. 2 — (B135) No. 20:

Is the resistance less than 1 
Ω?

Go to step 2.

Repair the har-
ness and connec-
tor.

NOTE:
In this case, repair
the following:
• Open circuit of 
harness between 
camshaft position 
sensor and ECM 
connector
• Poor contact in 
ECM connector
• Poor contact in 
coupling connector

2

CHECK HARNESS BETWEEN CAMSHAFT 
POSITION SENSOR AND ECM CONNEC-
TOR.
Measure the resistance of harness between 
camshaft position sensor connector and 
engine ground.

Connector & terminal

(E65) No. 1 — Engine ground:
(E65) No. 2 — Engine ground:

Is the resistance more than 1 
M

Ω?

Go to step 3.

Repair the ground 
short circuit of har-
ness between 
camshaft position 
sensor and ECM 
connector.

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

3

CHECK CONDITION OF CAMSHAFT POSI-
TION SENSOR.

Is the camshaft position sensor 
installation bolt tightened 
securely?

Go to step 4.

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

4

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

Terminals

No. 1 — No. 2:

Is the resistance 1 — 4 k

Ω?

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

Replace the cam-
shaft position sen-
sor. <Ref. to 
FU(H4DOTC)-24, 
Camshaft Position 
Sensor.>