Subaru Legacy IV (2008 year). Service manual — part 340
EN(H4DOTC)(diag)-181
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
AY:DTC P0335 CRANKSHAFT POSITION SENSOR “A” CIRCUIT
DTC DETECTING CONDITION:
• Immediately at fault recognition
• GENERAL DESCRIPTION <Ref. to GD(H4DOTC)-88, DTC P0335 CRANKSHAFT POSITION SENSOR
“A” CIRCUIT, Diagnostic Trouble Code (DTC) Detecting Criteria.>
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)-
52, OPERATION, Clear Memory Mode.>, and Inspection Mode <Ref. to EN(H4DOTC)(diag)-43, PRO-
CEDURE, Inspection Mode.>.
WIRING DIAGRAM:
EN-05676
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
1
2
14
3
14
24
B21
E2
E10
E10
1 2
B134
13
E
B134
1 2 3 4 5 6 7 8 9 10 11
12 13 14 15 16 17 18 19 20 21 22
23 24 25
34 35
36 37 38 39 40 41
48 49
50 51 52 53 54
42 43
44 45
46 47
26 27 28 29 30 31 32 33
B21
CRANKSHAFT
POSITION
SENSOR
ECM
EN(H4DOTC)(diag)-182
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
Step
Check
Yes
No
1
CHECK CONDITION OF CRANKSHAFT PO-
SITION SENSOR.
Is the crankshaft position sen-
sor installation bolt tightened
securely?
Go to step 2.
Tighten the crank-
shaft position sen-
sor installation bolt
securely.
2
CHECK CRANKSHAFT POSITION SENSOR.
1) Turn the ignition switch to OFF.
2) Remove the crankshaft position sensor.
3) Measure the resistance between connector
terminals of crankshaft position sensor.
Terminals
No. 1 — No. 2:
Is the resistance between 1 and
4 k
:?
Go to step 3.
Replace the crank-
shaft position sen-
sor. <Ref. to
FU(H4DOTC)-32,
Crankshaft Posi-
tion Sensor.>
3
CHECK HARNESS BETWEEN ECM AND
CRANK SHAFT POSITION SENSOR.
1) Disconnect the connectors from ECM.
2) Measure the resistance of harness between
ECM and crankshaft position sensor connector.
Connector & terminal
(B134) No. 13 — (E10) No. 1:
(B134) No. 14 — (E10) No. 2:
Is the resistance less than 1
:? Repair the poor
contact of ECM
and crankshaft
position sensor
connector.
Repair the harness
and connector.
NOTE:
In this case, repair
the following item:
• Open circuit in
harness between
ECM and crank-
shaft position sen-
sor connector
• Poor contact of
coupling connector
EN(H4DOTC)(diag)-183
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
AZ:DTC P0336 CRANKSHAFT POSITION SENSOR “A” CIRCUIT RANGE/
PERFORMANCE
DTC DETECTING CONDITION:
• Two consecutive driving cycles with fault
• GENERAL DESCRIPTION <Ref. to GD(H4DOTC)-90, DTC P0336 CRANKSHAFT POSITION SENSOR
“A” CIRCUIT RANGE/PERFORMANCE, Diagnostic Trouble Code (DTC) Detecting Criteria.>
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)-
52, OPERATION, Clear Memory Mode.>, and Inspection Mode <Ref. to EN(H4DOTC)(diag)-43, PRO-
CEDURE, Inspection Mode.>.
WIRING DIAGRAM:
EN-05676
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
1
2
14
3
14
24
B21
E2
E10
E10
1 2
B134
13
E
B134
1 2 3 4 5 6 7 8 9 10 11
12 13 14 15 16 17 18 19 20 21 22
23 24 25
34 35
36 37 38 39 40 41
48 49
50 51 52 53 54
42 43
44 45
46 47
26 27 28 29 30 31 32 33
B21
CRANKSHAFT
POSITION
SENSOR
ECM
EN(H4DOTC)(diag)-184
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
Step
Check
Yes
No
1
CHECK CONDITION OF CRANKSHAFT PO-
SITION SENSOR.
Turn the ignition switch to OFF.
Is the crankshaft position sen-
sor installation bolt tightened
securely?
Go to step 2.
Tighten the crank-
shaft position sen-
sor installation bolt
securely.
2
CHECK CRANK SPROCKET.
Remove the timing belt cover. <Ref. to
ME(H4DOTC)-46, REMOVAL, Timing Belt
Cover.>
Are crank sprocket teeth
cracked or damaged?
Replace the crank
sprocket. <Ref. to
ME(H4DOTC)-57,
Crank Sprocket.>
Go to step 3.
3
CHECK INSTALLATION CONDITION OF
TIMING BELT.
Turn the crankshaft using ST, and align the
alignment mark on crank sprocket with align-
ment mark on cylinder block.
ST
499987500
CRANKSHAFT
SOCKET
Is the timing belt dislocated
from its proper position?
Repair the installa-
tion condition of
timing belt. <Ref. to
ME(H4DOTC)-47,
Timing Belt.>
Replace the crank-
shaft position sen-
sor. <Ref. to
FU(H4DOTC)-32,
Crankshaft Posi-
tion Sensor.>
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