Subaru Impreza 2004 Service Manual page 96

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
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(H4DOTC)-57, Timing Belt Cover.>
9 CHECK INSTALLATION CONDITION OF
TIMING BELT.
Turn the camshaft, and align alignment mark
on camshaft sprocket with alignment mark on
timing belt cover LH.
Check
Is the resistance 1 — 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(H4DOTC)(diag)-175
ENGINE (DIAGNOSTICS)
Yes
Go to step 7. Replace the cam-
shaft position sen-
sor. <Ref. to
FU(H4DOTC)-30,
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(H4DOTC)-66,
Camshaft
Sprocket.>
Repair the installa- Replace the cam-
tion condition of shaft position sen-
timing belt. <Ref. sor. <Ref. to
to ME(H4DOTC)- FU(H4DOTC)-30,
58, Timing Belt Camshaft Position
Assembly.> Sensor.>
No