Subaru 2002 IMPREZA Service Manual page 413

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE (DIAGNOSTICS)
Yes
Inspect DTC
PO335 using "List
of Diagnostic Trou-
ble Code (DTC)".
<Ref. to EN(D0HC
TURBO)-80, List
of Diagnostic Trou-
ble Code (DTC).>
Go to step
3.
Replace the crank-
shaft sprocket.
<Ref. to FU(D0HC
Crankshaft Posi-
tion Sensor.>
Repair installation
condition of timing
belt. <Ref. to
ME(D0HC
TURBO)-48, Tim-
ing Belt Assem-
bly.>
TURBO)-30,
Step
CHECK ANY OTHER DTC ON DISPLAY.
No
Go to step 2.
Tighten crank-
shaft position sen-
sor installation bolt
securely.
Go to step 4.
Replace the crank-
shaft position sen-
sor. <Ref. to
FU(D0HC
TURBO)-30,
Crankshaft Posi-
tion Sensor.>
I
CHECK CONDITION OF CRANKSHAFT PO-
SITION SENSOR.
Turn the ignition switch to OFF.
I
CHECK CRANKSHAFT SPROCKET.
Remove the front belt cover.
I
CHECK INSTALLATION CONDITION OF
TIMING BELT.
Turn the crankshaft using ST, and align align-
ment mark on crankshaft sprocket with align-
ment mark on cylinder block.
ST 499987500 CRANKSHAFT SOCKET
Check
Does the Subaru Select Moni-
tor or OBD-ll general scan tool
indicate DTC P0335?
Is the crankshaft position sen-
sor installation bolt tightened
securely?
Are crankshaft sprocket teeth
cracked or damaged?
Is the timing belt dislocated
from its proper position?
EN(D0HC TURBO)-1 89