Subaru Legacy 2005 Service Manual page 1242

ENGINE (DIAGNOSTICS)
1. Basic Diagnostic Procedure
A: PROCEDURE
1. ENGINE
Step
1 CHECK ENGINE START FAILURE.
1) Ask the customer when and how the trou-
ble occurred using the interview check list.
<Ref. to EN(H4DOTC)(diag)-3, CHECK, Check
List for Interview.>
2) Start the engine.
2 CHECK ILLUMINATION OF MALFUNCTION
INDICATOR LIGHT.
3 CHECK DTC.
1) Turn the ignition switch to OFF.
2) Connect the Subaru Select Monitor to data
link connector.
3) Turn the ignition switch to ON.
4) Read DTC using Subaru Select Monitor or
general scan tool.
NOTE:
• Subaru Select Monitor
For detailed operation procedure, refer to
"READ CURRENT DATA FOR ENGINE". <Ref.
to EN(H4DOTC)(diag)-24, Subaru Select Mon-
itor.>
• General scan tool
For detailed operation procedure, refer to the
general scan tool operation manual.
4 PERFORM DIAGNOSIS.
1) Perform the clear memory mode. <Ref. to
EN(H4DOTC)(diag)-37, Clear Memory Mode.>
2) Perform the inspection mode. <Ref. to
EN(H4DOTC)(diag)-30, Inspection Mode.>
Basic Diagnostic Procedure
Does the engine start?
Does the malfunction indicator
light illuminate?
Is DTC displayed on the Sub-
aru Select Monitor or general
scan tool?
Is DTC displayed on the Sub-
aru Select Monitor or general
scan tool?
EN(H4DOTC)(diag)-2
Check
Go to step 2.
Go to step 3.
Record the DTC.
Repair the trouble
cause. <Ref. to
EN(H4DOTC)(diag
)-62, List of Diag-
nostic Trouble
Code (DTC).> Go
to step 4.
Inspect using
"Diagnostic Proce-
dure with Diagnos-
tic Trouble Code
(DTC)". <Ref. to
EN(H4DOTC)(diag
)-67, Diagnostic
Procedure with
Diagnostic Trou-
ble Code (DTC).>
Yes No
Inspection using
"Diagnostics for
Engine Starting
Failure" <Ref. to
EN(H4DOTC)(diag
)-49, Diagnostics
for Engine Start-
ing Failure.>
Inspection using
"General Diagnos-
tic Table". <Ref. to
EN(H4DOTC)(diag
)-213, General
Diagnostic Table.>
Repair the related
parts.
NOTE:
If DTC is
shown on display
although the mal-
function indicator
light illuminates,
perform the diag-
nostics of malfunc-
tion indicator light
circuit or combina-
tion meter. <Ref. to
EN(H4DOTC)(di-
ag)-40, Malfunc-
tion Indicator
Light.>
Finish the diagno-
sis.
not