Subaru 2006 Legacy, Manual

Page: 1545 / 4302

EN(H4DOTC)(diag)-2
Basic Diagnostic Procedure
ENGINE (DIAGNOSTICS)
1. Basic Diagnostic Procedure
A: PROCEDURE
1. ENGINE
Step Check Yes No
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.
Does the engine start? Go to step 2 . Inspection using
“Diagnostics for
Engine Start Fail-
ure”. <Ref. to
EN(H4DOTC)(diag)
-54, Diagnostics
for Engine Start-
ing Failure.>
2 CHECK ILLUMINATION OF MALFUNCTION
INDICATOR LIGHT. Does the malfunction indicator
light illuminate? Go to step 3 . Inspection using
“General Diagnos-
tic Table” <Ref. to
EN(H4DOTC)(diag)
-320, General
Diagnostic Table.>
3 CHECK INDICATION OF DTC ON SCREEN.
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 the Sub-
aru Select Monitor or general scan tool power
switch to ON.
4) Read the DTC on Subaru Select Monitor or
general scan tool.
Is DTC displayed on the Sub-
aru Select Monitor or general
scan tool? Record the DTC.
Repair the trouble
cause. <Ref. to
EN(H4DOTC)(diag)
-68, List of Diag-
nostic Trouble
Code (DTC).> Go
to step
4 .
Repair the related
parts.
NOTE:
If DTC is not
shown on display
although the mal-
function indicator
light
illuminates,
perform the diag-
nosis of malfunc-
tion indicator light
circuit or combina-
tion meter. <Ref. to
EN(H4DOTC)(di-
ag)-45, Malfunction
Indicator Light.>
4 PERFORM DIAGNOSIS.
1) Perform the Clear Memory Mode. <Ref. to
EN(H4DOTC)(diag)-42, Clear Memory Mode.>
2) Perform the Inspection Mode. <Ref. to
EN(H4DOTC)(diag)-33, Inspection Mode.>
Is DTC displayed on the Sub-
aru Select Monitor or general
scan tool? Inspect using
“Diagnostic Proce-
dure with Diagnos-
tic Trouble Code
(DTC)”.
<Ref. to
EN(H4DOTC)(diag)
-75, Diagnostic
Procedure with
Diagnostic Trou-
ble Code (DTC).> Finish the diagno-
sis.
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