Subaru Legacy III (2000-2003 year). Manual — part 354

EN(H6DO)-218

ENGINE (DIAGNOSTICS)

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)

AT: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(H6DO)-54, OP-
ERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H6DO)-47, OPERATION, Inspec-
tion Mode.>.
• WIRING DIAGRAM:

EN-00817

1

2

1

6

11

2

21

B21

E2

E10

B21

E10

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

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

1 2

EN(H6DO)-219

ENGINE (DIAGNOSTICS)

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)

Step

Value

Yes

No

1

CHECK HARNESS BETWEEN CRANK-
SHAFT POSITION SENSOR AND ECM.
1) Turn ignition switch to OFF.
2) Disconnect connector from ECM.
3) Measure resistance between crankshaft

position sensor and ECM.

Connector & terminal

(E10) No. 1 — (B135) No. 2:
(E10) No. 2 — (B135) No. 11:

Is the measured value less than the speci-
fied value?

1

Ω

Go to step 2.

Repair open circuit
between crank-
shaft position sen-
sor and ECM.

2

CHECK HARNESS BETWEEN CRANK-
SHAFT POSITION SENSOR AND ECM.
Measure resistance between crankshaft posi-
tion sensor and engine ground.

Connector & terminal

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

Does the measured value exceed the specified
value?

1 M

Ω

Go to step 3.

Repair ground
short circuit
between crank-
shaft position sen-
sor and ECM.

3

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

Tightened securely.

Go to step 4.

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

4

CHECK CRANKSHAFT POSITION SENSOR.
1) Turn ignition switch to OFF.
2) Remove crankshaft position sensor.
3) Measure resistance between connector ter-

minals of crankshaft position sensor.

Terminals

No. 1 — No. 2:

Is the measured value within the specified
range?

800 — 1300 k

Ω

Go to step 5.

Replace crank-
shaft position sen-
sor. <Ref. to
FU(H6DO)-30,
REMOVAL,
Crankshaft Posi-
tion Sensor.>

5

CHECK POOR CONTACT.
Check poor contact in ECM connector.
Is there poor contact in ECM connector?

There is poor contact.

Repair poor con-
tact in ECM con-
nector.

Replace ECM.
<Ref. to
FU(H6DO)-46,
Engine Control
Module.>

EN(H6DO)-220

ENGINE (DIAGNOSTICS)

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)

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

PERFORMANCE —

• DTC DETECTING CONDITION:

• Tow consecutive driving cycles with fault

• TROUBLE SYMPTOM:

• Engine stalls.
• Failure of engine to start

CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H6DO)-54, OP-
ERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H6DO)-47, OPERATION, Inspec-
tion Mode.>.
• WIRING DIAGRAM:

EN-00817

1

2

1

6

11

2

21

B21

E2

E10

B21

E10

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

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

1 2

EN(H6DO)-221

ENGINE (DIAGNOSTICS)

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)

Step

Value

Yes

No

1

CHECK ANY OTHER DTC ON DISPLAY.
Is any other DTC displayed?

Another DTC is displayed.

Inspect DTC
P0335 using “List
of Diagnostic
Trouble Code
(DTC)”. <Ref. to
EN(H6DO)-89, 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 PLATE.
Are crankshaft plate teeth cracked or dam-
aged?

Cracked or damaged.

Replace crank-
shaft plate.

Go to step 4.

4

CHECK INSTALLATION CONDITION OF
TIMING CHAIN.
Turn crankshaft using ST, and align alignment
mark on crankshaft sprocket with alignment
mark on cylinder block.
ST

18252AA000 CRANKSHAFT SOCKET

Is timing chain dislocated from its proper posi-
tion?

Dislocated from proper posi-
tion.

Repair installation
condition of timing
chain. <Ref. to
ME(H6DO)-41,
Timing Chain
Assembly.>

Replace crank-
shaft position sen-
sor. <Ref. to
FU(H6DO)-30,
Crankshaft Posi-
tion Sensor.>