Subaru Legacy III (2000-2003 year). Manual - part 142

EN(H4SO)-180

ENGINE (DIAGNOSTICS)

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)

AI: DTC P0335 — CRANKSHAFT POSITION SENSOR “A” CIRCUIT —

• DTC DETECTING CONDITION:

• Immediately at fault recognition

• TROUBLE SYMPTOM:

• Engine stalls.
• Failure of engine to start

CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode<Ref. to EN(H4SO)-47, OPER-
ATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H4SO)-40, OPERATION, Inspection 
Mode.> .
• WIRING DIAGRAM:

EN-01127

1

2

19

17

17

6

28

B21

E2

E10

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

B135

B21

E10

1 2

B135 ECM

CRANKSHAFT

POSITION

SENSOR

1 2

5

6 7

8

13

14 15

16

9 10

11 12

3 4

17 18

19 20

EN(H4SO)-181

ENGINE (DIAGNOSTICS)

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)

Step

Value

Yes

No

1

CHECK HARNESS BETWEEN CRANK-
SHAFT POSITION SENSOR AND ECM CON-
NECTOR.
1) Turn ignition switch to OFF.
2) Disconnect connector from crankshaft posi-

tion sensor.

3) Measure resistance of harness between 

crankshaft position sensor connector and 
engine ground.

Connector & terminal

(E10) No. 1 — Engine ground:

Does the measured value exceed the spec-
ified value?

100 k

Ω

Repair harness 
and connector.

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

Go to step 2.

2

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

Connector & terminal

(E10) No. 1 — Engine ground:

Is the measured value less than the specified 
value?

10 

Ω

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

NOTE:
The harness be-
tween both con-
nectors are
shielded. Repair
ground short circuit
in harness togeth-
er with shield.

Go to step 3.

3

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

Connector & terminal

(E10) No. 2 — Engine ground:

Is the measured value less than the specified 
value?

5 

Ω

Go to step 4.

Repair harness 
and connector.

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

4

CHECK CONDITION OF CRANKSHAFT PO-
SITION SENSOR.
Is the crankshaft position sensor installation 
bolt tightened securely?

Tightened securely.

Go to step 5.

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

5

CHECK CRANKSHAFT POSITION SENSOR.
1) Remove crankshaft position sensor.
2) Measure resistance between connector ter-

minals of crankshaft position sensor.

Terminals

No. 1 — No. 2:

Is the measured value within the specified 
range?

1 - 4 k

Ω

Repair poor con-
tact in crankshaft 
position sensor 
connector.

Replace crank-
shaft position sen-
sor. <Ref. to 
FU(H4SO)-28, 
Camshaft Position 
Sensor.>

EN(H4SO)-182

ENGINE (DIAGNOSTICS)

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)

AJ:DTC P0336 — CRANKSHAFT POSITION SENSOR “A” CIRCUIT RANGE/

PERFORMANCE —

• DTC DETECTING CONDITION:

• Immediately at fault recognition

• TROUBLE SYMPTOM:

• Engine stalls.
• Failure of engine to start

CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode<Ref. to EN(H4SO)-47, OPER-
ATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H4SO)-40, OPERATION, Inspection 
Mode.> .
• WIRING DIAGRAM:

EN-01127

1

2

19

17

17

6

28

B21

E2

E10

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

B135

B21

E10

1 2

B135 ECM

CRANKSHAFT

POSITION

SENSOR

1 2

5

6 7

8

13

14 15

16

9 10

11 12

3 4

17 18

19 20

EN(H4SO)-183

ENGINE (DIAGNOSTICS)

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)

Step

Value

Yes

No

1

CHECK ANY OTHER DTC ON DISPLAY.
Does the Subaru Select Monitor or OBD-II 
general scan tool indicate DTC P0335?

DTC P0335 indicated.

Inspect DTC 
P0335 using “List 
of Diagnostic 
Trouble Code 
(DTC)”. <Ref. to 
EN(H4SO)-83, List 
of Diagnostic 
Trouble Code 
(DTC).>

Go to step 2.

2

CHECK CONDITION OF CRANKSHAFT PO-
SITION SENSOR.
Turn ignition switch to OFF.
Is the crankshaft position sensor installation 
bolt tightened securely?

Tightened securely.

Go to step 3.

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

3

CHECK CRANKSHAFT SPROCKET.
Remove front belt cover.
Are crankshaft sprocket teeth cracked or dam-
aged?

Cracked or damaged.

Replace crank-
shaft sprocket.  
<Ref. to 
ME(H4SO)-53, 
Crankshaft 
Sprocket.>

Go to step 4.

4

CHECK INSTALLATION CONDITION OF 
TIMING BELT.
Turn crankshaft using ST, and align alignment 
mark on crankshaft sprocket with alignment 
mark on cylinder block.
Is timing belt dislocated from its proper posi-
tion?

Dislocated from proper posi-
tion.

Repair installation 
condition of timing 
belt. <Ref. to 
ME(H4SO)-46, 
Timing Belt 
Assembly.>

Replace crank-
shaft position sen-
sor. <Ref. to 
FU(H4SO)-27, 
Crankshaft Posi-
tion Sensor.>