Subaru 2002 Impreza - Basic Diagnostic Procedure

I
BASIC DIAGNOSTIC PROCEDURE
ENGINE (DIAGNOSTICS)
1. Basic Diagnostic Procedure
A: PROCEDURE
1. ENGINE
Yes
Go to step 2.
Go to step 3.
Record the diag-
nostic trouble
code. Repair the
trouble cause.
<Ref.
to EN(D0HC
TURBO)-80, List
of Diagnostic Trou-
ble Code (DTC).r
Go
to step 4.
Inspect using
“Diagnostics Pro-
cedure with Diag-
nostic Trouble
Code (DTC)”.
<Ref. to EN(D0HC
TURBO)-88, Diag-
nostic Procedure
with Diagnostic
Trouble Code
IDTCb
~
Step
CHECK ENGINE START FAILURE.
1)Ask the customer when and how the trouble
occurred using the interview check list. <Ref. to
EN(D0HC TURBO)-4, CHECK, Check List for
Interview.>
2)Start the engine.
No
Inspection using
“Diagnostics for
Engine Start Fail-
ure”. <Ref.
to
EN(D0HC
TURBO)-63, Diag-
nostics for Engine
Starting Failure.>
Inspection using
“General Diagnos-
tics Table”. <Ref.
to EN(D0HC
General Diagnos-
tic Table.>
Repair the related
parts.
NOTE:
If DTC is no
shown on displa!
although the MIL
il
luminates, per
form diagnostics
o
MIL (CHECK EN
GINE malfunctior
indicator lamp) cir
cuit or combinatior
meter. <Ref.
tc
EN(D0HC TUR
BO)-52, Engint
Malfunction Indica
tor Lamp (MIL).>
Complete the
diagnosis.
TURBO)-372,
I
CHECK ILLUMINATION OF CHECK ENGINE
MALFUNCTION INDICATOR LAMP (MIL).
I CHECK INDICATION OF DTC ON DISPLAY.
1)Turn the ignition switch to OFF.
2)Connect the Subaru Select Monitor or the
OBD-ll general scan tool
to data link connec-
tor.
3)Turn the ignition switch to ON and the Sub-
aru Select Monitor or OBD-I1 general scan tool
switch
to ON.
4)Read the DTC on the Subaru Select Monitor
or OBD-ll general scan
tool.
I PERFORM THE DIAGNOSIS.
1)Perform the clear memory mode. <Ref. to
EN(D0HC TURBO)-49, Clear Memory Mode.:
2)Perform the inspection mode. <Ref.
to
EN(D0HC TURBO)-46, Inspection Mode.>
Check
)oes the engine start?
)oes CHECK ENGINE mal-
Jnction indicator lamp illumi-
late?
)oes the Subaru Select Moni-
3r or OBD-II general scan
tool
idicate DTC?
Ioes the Subaru Select Moni-
or or OBD-ll general scan
tool
ndicate DTC?
EN(D0HC TURBO)-2