Subaru IMPREZA GD 2007 Series Manual page 111

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ENGINE (DIAGNOSTICS)
1. Basic Diagnostic Procedure
A: PROCEDURE
1. ENGINE
Step
1 CHECK ENGINE START FAILURE.
1) Ask the customer when and how the trouble
occurred using the interview check list. <Ref. to
EN(H4SO)(diag)-3, CHECK, Check List for
Interview.>
2) Start the engine.
2 CHECK ILLUMINATION OF MALFUNCTION
INDICATOR LIGHT.
3 CHECK INDICATION OF DTC ON DISPLAY.
1) Turn the ignition switch to OFF.
2) Connect the Subaru Select Monitor or gen-
eral scan tool to data link connector.
3) Turn the ignition switch to ON, and run the
Subaru Select Monitor or general scan tool.
4) Read the DTC on Subaru Select Monitor or
general scan tool.
4 PERFORM DIAGNOSIS.
1) Perform the Clear Memory Mode. <Ref. to
EN(H4SO)(diag)-47, Clear Memory Mode.>
2) Perform the Inspection Mode. <Ref. to
EN(H4SO)(diag)-38, Inspection Mode.>
Basic Diagnostic Procedure
Check
Does the engine start?
Does the malfunction indicator
light illuminate?
Is DTC displayed on the Subaru
Select Monitor or general scan
tool?
Is DTC displayed on the Subaru
Select Monitor or general scan
tool?
EN(H4SO)(diag)-2
Yes No
Go to step 2. Inspection using
"Diagnostics for
Engine Start Fail-
ure". <Ref. to
EN(H4SO)(diag)-
58, Diagnostics for
Engine Starting
Failure.>
Go to step 3.
Inspection using
"General Diagnos-
tic Table". <Ref. to
EN(H4SO)(diag)-
310, INSPEC-
TION, General
Diagnostic Table.>
Record the DTC. Repair the related
Repair the trouble parts.
cause. <Ref. to
NOTE:
EN(H4SO)(diag)-
If DTC is not
72, List of Diagnos-
shown on display
tic Trouble Code
although the mal-
(DTC).> Go to step
function indicator
4.
light illuminates,
perform the diag-
nosis of malfunc-
tion indicator light
circuit or combina-
tion meter. <Ref. to
EN(H4SO)(diag)-
49, Malfunction In-
dicator Light.>
Inspect using Finish the diagno-
"Diagnostic Proce- sis.
dure with Diagnos-
tic Trouble Code
(DTC)".
<Ref. to
EN(H4SO)(diag)-
78, Diagnostic Pro-
cedure with Diag-
nostic Trouble
Code (DTC).>