Subaru Impreza 2003 Service Manual page 779

2. WITHOUT SUBARU SELECT MONITOR
CAUTION:
• Check the connector while it is connected unless specified otherwise.
• Be sure to check again from the beginning in order to prevent secondary trouble caused by repair
work.
Step
1 CHECK ENGINE START FAILURE.
1)Ask the customer when and how trouble
occurred using interview check list. <Ref. to
EN(H4SOw/oOBD)-4, CHECK, Check List for
Interview.>
2)Start the engine.
2 CHECK ILLUMINATION OF MALFUNCTION
INDICATOR LIGHT.
<Ref. to EN(H4SOw/oOBD)-31, ACTIVATION
OF MALFUNCTION INDICATOR LIGHT, Mal-
function Indicator Light.>
3 CHECK INDICATION OF DTC ON MALFUNC-
TION INDICATOR LIGHT.
1)Perform the read DTC (read memory
mode).<Ref. to EN(H4SOw/oOBD)-24, WITH-
OUT SUBARU SELECT MONITOR, OPERA-
TION, Read Diagnostic Trouble Code (DTC).>
2)Read any DTC on malfunction indicator light.
4 PERFORM THE DIAGNOSIS.
1)Perform the Clear Memory Mode. <Ref. to
EN(H4SOw/oOBD)-28, OPERATION, Clear
Memory Mode.>
2)Perform the inspection mode. <Ref. to
EN(H4SOw/oOBD)-26, OPERATION, Inspec-
tion Mode.>
BASIC DIAGNOSTIC PROCEDURE
Does the engine start?
Does the malfunction indicator
light illuminate?
Does the malfunction indicator
light indicate DTC? <Ref. to
EN(H4SOw/oOBD)-55, LIST,
List of Diagnostic Trouble
Code (DTC).>
Does the malfunction indicator
light indicate DTC? <Ref. to
EN(H4SOw/oOBD)-55, LIST,
List of Diagnostic Trouble
Code (DTC).>
EN(H4SOw/oOBD)-3
Check
Go to step 2.
Go to step 3.
Repair the trouble
cause. Go to step
4.
Repair the trouble
cause. Go to step
4.
ENGINE (DIAGNOSTICS)
Yes No
Inspection using
"Diagnostics for
Engine Starting
Failure". <Ref. to
EN(H4SOw/
oOBD)-38, Diag-
nostics for Engine
Starting Failure.>
Inspection using
"General Diagnos-
tic Table". <Ref. to
EN(H4SOw/
oOBD)-97,
INSPECTION,
General Diagnos-
tic Table.>
Repair the related
parts.
NOTE:
If the DTC is not
shown on malfunc-
tion indicator light
although malfunc-
tion indicator light
illuminates,
form diagnostics of
circuit or combina-
tion meter.<Ref. to
EN(H4SOw/
oOBD)-30, Mal-
function Indicator
Light.>
Complete the
diagnosis.
per-