Subaru IMPREZA 2002 Service Manual page 371

ENGINE MALFUNCTION INDICATOR LAMP (MIL)
ENGINE (DIAGNOSTICS)
~~
4) When the ignition switch is turned to ON (engine
off) or to "START" with the test mode connector
connected, the MIL blinks at a cycle of 3 Hz.
B: ACTIVATION OF CHECK ENGINE
MALFUNCTION INDICATOR
LAMP (MIL)
1) When the ignition switch is turned to ON (engine
off), the CHECK ENGINE malfunction indicator
lamp (MIL) in the combination meter illuminates.
NOTE:
If the MIL does not illuminate, perform diagnostics
of the CHECK ENGINE light circuit or the combina-
tion meter circuit. <Ref. to EN(S0HC)-48, CHECK
ENGINE MALFUNCTION INDICATOR LAMP
(MIL) DOES NOT COME ON., Engine Malfunction
Indicator Lamp (MIL) .>
I
I
EN10741
2) After starting the engine, the MIL goes out. If it
does not, either the engine or the emission control
system is malfunctioning.
a) No
trouble
MIL
ON
A - 1
OFF
b) Trouble occurs.
ON
OFF
Igniion
MIL
switch ~~~i~~
ON start
OBD0053A
3) If the diagnosis system senses a misfire which
could damage the catalyzer, the MIL will blink at a
cycle of 1 Hz.
Misfire
start
OBD0054A
Ignition
switch
OBD0055A
ON
EN(S0HC)-47