Subaru IMPREZA 2002 Service Manual page 501

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE (DIAGNOSTICS)
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 crankshaft sprocket teeth
cracked or damaged?
Is the timing belt dislocated
from its proper position?
~~ ~ ~
Step
1
CHECK ANY OTHER DTC ON DISPLAY.
Yes
Inspect DTC
PO335 using "List
of Diagnostic Trou-
ble Code (DTC)".
<Ref. to
List of Diagnostic
Trouble Code
(DTC).r
Go to step
3 .
EN(S0HC)-77,
Replace the crank-
s haft sprocket.
<Ref. to
Crankshaft
Sprocket.>
Repair installation
condition of timing
belt. <Ref. to
Timing Belt
Assembly.>
ME(SOHC)-54,
ME(S0HC)-47,
2
CHECK CONDITION OF CRANKSHAFT PO-
SlTlON SENSOR.
Turn the ignition switch to OFF.
3 CHECK CRANKSHAFT SPROCKET.
Remove the front belt cover.
4
CHECK INSTALLATION CONDITION OF
TIMING BELT.
R r n the crankshaft using ST, and align align-
ment mark on crankshaft sprocket with align-
ment mark on cylinder block.
ST 499987500CRANKSHAFT SOCKET
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 <Ref.
Crankshaft Posi-
tion Sensor.>
to FU(S0HC)-28,
EN(S0HC)-177