Subaru LEGACY 2006 Manual page 224

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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
1 CHECK ANY OTHER DTC ON DISPLAY.
2 CHECK CONDITION OF CRANKSHAFT PO-
SITION SENSOR.
Turn the ignition switch to OFF.
3 CHECK CRANK SPROCKET.
Remove the timing belt cover.
4 CHECK INSTALLATION CONDITION OF
TIMING BELT.
Turn the crankshaft, and align alignment mark
on crank sprocket with alignment mark on cyl-
inder block.
Check
Is any other DTC displayed?
Is the crankshaft position sen-
sor installation bolt tightened
securely?
Are crank sprocket teeth
cracked or damaged?
Is the timing belt dislocated
from its proper position?
EN(H4SO)(diag)-187
ENGINE (DIAGNOSTICS)
Yes No
Check DTC using Go to step 2.
"List of Diagnostic
Trouble Code
(DTC)". <Ref. to
EN(H4SO)(diag)-
70, List of Diag-
nostic Trouble
Code (DTC).>
Go to step 3.
Tighten the crank-
shaft position sen-
sor installation bolt
securely.
Go to step 4.
Replace the crank
sprocket. <Ref. to
ME(H4SO)-46,
Crank Sprocket.>
Repair the installa- Replace the crank-
tion condition of shaft position sen-
timing belt. <Ref. sor. <Ref. to
to ME(H4SO)-40, FU(H4SO)-20,
Timing Belt.> Crankshaft Posi-
tion Sensor.>