Subaru Legacy 2002 Service Manual page 1405

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
Engine (DIAGNOSTICS)
No.
11 CHECK INSTALLATION CONDITION OF
TIMING CHAIN.
Turn crankshaft using ST, and align alignment
mark on crankshaft sprocket with alignment
mark.
ST 499987500 CRANKSHAFT SOCKET
12 CHECK FUEL LEVEL.
13 CHECK STATUS OF CHECK ENGINE MAL-
FUNCTION INDICATOR LAMP (MIL).
1) Clear memory using Subaru Select Moni-
tor.
<Ref. to EN(H6)-49, Clear Memory Mode.>
2) Start engine, and drive the vehicle more
than 10 minutes.
14 CHECK CAUSE OF MISFIRE DIAGNOSED.
15 CHECK AIR INTAKE SYSTEM.
Step
Is timing chain dislocated
from its proper position?
Is the fuel meter indication
higher than the "Lower"
level?
Is the MIL coming on or
blinking?
Was the cause of misfire
diagnosed when the engine
is running?
Is there a fault in air intake
system?
EN(H6)-198
Check Yes
Repair installation
condition of timing
chain. <Ref. to
ME(H6)-42, Tim-
ing Chain Assem-
bly.>
Go to step 13.
Go to step 15.
Finish diagnostics
operation, if the
engine has no
abnormality.
NOTE:
Ex. Remove spark
plug cord, etc.
Repair air intake
system.
NOTE:
Check the follow-
ing items:
¼ Are there air
leaks or air suc-
tion caused by
loose or dislo-
cated nuts and
bolts?
¼ Are there
cracks or any dis-
connection of
hoses?
No
Go to step 12.
Replenish fuel so
fuel meter indica-
tion is higher than
the "Lower" level.
After replenishing
fuel, Go to step
13.
Go to step 14.
Repair poor con-
tact.
NOTE:
In this case,
repair the follow-
ing:
¼ Poor contact in
ignitor connector
¼ Poor contact in
ignition coil con-
nector
¼ Poor contact in
fuel injector con-
nector on faulty
cylinders
¼ Poor contact in
ECM connector
¼ Poor contact in
coupling connec-
tor
Go to step 16.