EN(H6DO)-2
ENGINE (DIAGNOSTICS)
BASIC DIAGNOSTIC PROCEDURE
1. Basic Diagnostic Procedure
A: PROCEDURE
1. ENGINE
Step
Value
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(H6DO)-4, CHECK, Check List
for Interview.>
2) Start the engine.
Does the engine start?
Engine starts.
Go to step 2.
Inspection using
“Diagnostics for
Engine Start Fail-
ure”. <Ref. to
EN(H6DO)-71,
Diagnostics for
Engine Starting
Failure.>
2
CHECK ILLUMINATION OF CHECK ENGINE
MALFUNCTION INDICATOR LAMP (MI).
Does CHECK ENGINE malfunction indicator
lamp illuminate?
Indicator lamp illuminates.
Go to step 3.
Inspection using
“General Diagnos-
tics Table”. <Ref.
to EN(H6DO)-332,
INSPECTION,
General Diagnos-
tic Table.>
3
CHECK INDICATION OF DTC ON DISPLAY.
1) Turn ignition switch to OFF.
2) Connect the Subaru Select Monitor or the
OBD-II general scan tool to data link con-
nector.
3) Turn ignition switch to ON and the Subaru
Select Monitor or OBD-II general scan tool
switch to ON.
4) Read DTC on the Subaru Select Monitor or
OBD-II general scan tool.
Does the Subaru Select Monitor or OBD-II
general scan tool indicate DTC?
DTC indicated.
Go to step 4.
Repair the related
parts.
NOTE:
If DTC is not
shown on display
although the MI il-
luminates, per-
form diagnostics of
MI (CHECK EN-
GINE malfunction
indicator lamp) cir-
cuit or combination
meter. <Ref. to
EN(H6DO)-58, En-
gine Malfunction
Indicator Lamp
(MI).>
4
PERFORM THE DIAGNOSIS.
1) Inspect using “Diagnostics Procedure with
Diagnostic Trouble Code (DTC)”.
NOTE:
<Ref. to EN(H6DO)-96, Diagnostic Procedure
with Diagnostic Trouble Code (DTC).>
NOTE:
Carry out the basic check, only when DTC
about automatic transmission is shown on dis-
play. <Ref. to EN(H6DO)-46, Read Diagnostic
Trouble Code.>
2) Repair the trouble cause.
3) Perform the clear memory mode. <Ref. to
EN(H6DO)-54, Clear Memory Mode.>
4) Perform the inspection mode. <Ref. to
EN(H6DO)-47, Inspection Mode.>
Does the Subaru Select Monitor or OBD-II
general scan tool indicate DTC?
DTC indicated.
Inspect using
“Diagnostics Pro-
cedure with Diag-
nostic Trouble
Code (DTC)”.
NOTE:
<Ref. to
EN(H6DO)-96, Di-
agnostic Proce-
dure with
Diagnostic Trou-
ble Code (DTC).>
Complete the
diagnosis.