Subaru Impreza 2003 Service Manual page 803

NOTE:
• For detailed operation procedure, refer to the SUBARU SELECT MONITOR OPERATION MANUAL.
• For detailed concerning DTCs, refer to the DTC LIST. <Ref. to EN(H4SOw/oOBD)-55, LIST, List of Diag-
nostic Trouble Code (DTC).>
• On AWD vehicles, release the parking brake.
• The speed difference between front and rear wheels may light ABS warning light, but this indicates no mal-
functions. When the engine control diagnosis is finished, perform the ABS memory clearance procedure of
self-diagnosis system.
3. WITHOUT SUBARU SELECT MONITOR
Step
1 CHECK STATUS OF MALFUNCTION INDI-
CATOR LIGHT.
1)Start and warm-up the engine.
2)Turn the ignition switch to OFF.
3)Set the shift lever to neutral position (MT
model), or set selector lever to "P" position (AT
model).
4)Connect the test mode connector (green) at
lower portion of instrument panel (on driver's
side).
5)Turn the ignition switch to ON.
2 CHECK DTC.
1)Set the selector lever to "N" position, and
then set selector lever to "P" position again (AT
model only).
2)Start the engine.
3 CHECK DTC.
1)Drive the vehicle at speed greater than 11
km/h (7 MPH) for at least 1 minute.
2)Warm-up the engine above 2,000 rpm.
INSPECTION MODE
Check
Does the malfunction indicator
light come on?
Does the malfunction indicator
light indicate DTC?
Does the malfunction indicator
light indicate DTC?
EN(H4SOw/oOBD)-27
ENGINE (DIAGNOSTICS)
Yes
Go to step 2. Check the follow-
ing and repair if
necessary.
NOTE:
• Open or short
circuit in engine
control module
power supply or
ground line
• Open or short
circuit in malfunc-
tion indicator light
Record the DTC Go to step 3.
and inspect using
DTC. <Ref. to
EN(H4SOw/
oOBD)-57, Diag-
nostic Procedure
with Diagnostic
Trouble Code
(DTC).>
Record the DTC Turn the ignition
and inspect using switch to OFF.
DTC. <Ref. to Disconnect the
EN(H4SOw/ test mode connec-
oOBD)-57, Diag- tor. Complete the
nostic Procedure inspection mode.
with Diagnostic
NOTE:
Trouble Code
When
(DTC).>
board
system
no trouble, trouble
is in a different
symptom.
No
the on-
diagnosis
indicates