Subaru 2002 IMPREZA Service Manual page 1349

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 align-
ment mark on crankshaft sprocket with align-
ment mark on cylinder block.
ST 499987500 CRANKSHAFT SOCKET
Check
Is any other DTC displayed?
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(TURBO)-189
ENGINE (DIAGNOSTICS)
Yes
Inspect the rele- Go to step 2.
vant DTC using
"List of Diagnostic
Trouble Code
(DTC)". <Ref. to
EN(TURBO)-75,
List of Diagnostic
Trouble 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
FU(TURBO)-30,
Crankshaft Posi-
tion Sensor.>
Repair the installa- Replace the crank-
tion condition of shaft position sen-
timing belt. <Ref. sor. <Ref. to
to ME(TURBO)- FU(TURBO)-30,
48, Timing Belt Crankshaft Posi-
Assembly.> tion Sensor.>
No