Subaru 2002 IMPREZA Service Manual page 605

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
Step
1 CHECK ANY OTHER DIAGNOSTIC TROU-
BLE CODE (DTC) ON DISPLAY.
2 CHECK CONDITION OF CRANKSHAFT PO-
SITION SENSOR.
Turn the ignition switch to OFF.
3 CHECK CRANKSHAFT SPROCKET.
Remove the front belt cover.
4 CHECK INSTALLATION CONDITION OF
TIMING BELT.
Turn the crankshaft using ST, and align the
alignment mark on crankshaft sprocket with
alignment mark on cylinder block.
ST 499987500 CRANKSHAFT SOKET
Check
Does the Subaru Select Moni-
tor or OBD-II general scan tool
indicate DTC P0335?
Is the crankshaft position sen-
sor installation bolt tightened
securely?
Are the crankshaft sprocket
teeth cracked or damaged?
Is the timing belt dislocated
from its proper position?
EN-173
ENGINE (DIAGNOSTICS)
Yes
Inspect DTC Go to step 2.
P0335 using "List
of Diagnostic
Trouble Code
(DTC)". <Ref. to
EN-83, List of
Diagnostic Trou-
ble Code (DTC).>
Go to step 3. Tighten the crank-
shaft position sen-
sor installation bolt
securely.
Replace the crank- Go to step 4.
shaft sprocket.
<Ref. to ME-56,
Crankshaft
Sprocket.>
Repair the installa- Replace the crank-
tion condition of shaft position sen-
timing belt. <Ref. sor. <Ref. to <Ref.
to ME-49, Timing to FU-32, Crank-
Belt Assembly.> shaft Position Sen-
sor.>
No