Subaru 2002 IMPREZA Service Manual page 610

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE (DIAGNOSTICS)
Step
6 CHECK CAMSHAFT POSITION SENSOR.
1)Remove the camshaft position sensor.
2)Measure the resistance between connector
terminals of camshaft position sensor.
Terminals
No. 1 — No. 2:
7 CHECK CONDITION OF CAMSHAFT POSI-
TION SENSOR.
Turn the ignition switch to OFF.
8 CHECK CAMSHAFT SPROCKET.
Remove the front belt cover. <Ref. to ME-48,
Belt Cover.>
9 CHECK INSTALLATION CONDITION OF
TIMING BELT.
Turn the camshaft using ST, and align the
alignment mark on camshaft sprocket with
alignment mark on timing belt cover LH.
ST 18231AA010 CAMSHAFT SPROCKET
NOTE:
Also the CAMSHAFT SPROCKET WRENCH
(499207100) can be used.
WRENCH
Check
Is the resistance between 1
and 4 kΩ?
Is the camshaft position sensor
installation bolt tightened
securely?
Are the camshaft sprocket
teeth cracked or damaged?
Is the timing belt dislocated
from its proper position?
EN-178
Yes
Go to step 7. Replace the cam-
shaft position sen-
sor. <Ref. to FU-
33, Camshaft
Position Sensor.>
Go to step 8. Tighten the cam-
shaft position sen-
sor installation bolt
securely.
Replace the cam- Go to step 9.
shaft sprocket.
<Ref. to ME-54,
Camshaft
Sprocket.>
Repair the installa- Replace the cam-
tion condition of shaft position sen-
timing belt. <Ref. sor. <Ref. to FU-
to ME-49, Timing 33, Camshaft
Belt Assembly.> Position Sensor.>
No