Subaru 2002 IMPREZA Service Manual page 343

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE (DIAGNOSTICS)
Yes
Inspect DTC
POI 12, PO1 13,
PO1 17, PO1 18 or
PO1 25 using "List
of Diagnostic Trou-
ble Code (DTC)".
<Ref. to EN(D0HC
TURBO)-80, List
of Diagnostic Trou-
ble Code (DTC).>
NOTE:
In this case, it is
not necessary to
inspect DTC
P0111.
Replace the mass
air flow and intake
air temperature
sensor. <Ref. to
FU(D0HC
TURBO)-34, Mass
Air Flow and
Intake Air Temper-
ature Sensor.>
Step
CHECK ANY OTHER DTC ON DISPLAY.
No
Go to step 2.
Inspect DTC
PO125 using "List
of Diagnostic Trow
ble Code (DTC)".
<Ref. to EN(D0HC
TURBO)-80, List
of Diagnostic Trow
ble Code (DTC).>
CHECK ENGINE COOLANT TEMPERA-
TURE.
1)Start the engine and warm it up completely.
2)Measure the engine coolant temperature
using Subaru Select Monitor or OBD-11 general
scan tool.
NOTE:
*Subaru Select Monitor
For detailed operation procedure, refer to the
"READ CURRENT DATA FOR ENGINE. <Ref.
to EN(D0HC TURBO)-38, Subaru Select Mon-
itor.>
*OBD-II general scan tool
For detailed operation procedures, refer to the
OBD-ll General Scan Tool Instruction Manual.
Check
loes the Subaru Select Moni-
or or OBD-ll general scan tool
ndicate DTC PO1 12, PO1 13,
'0117, PO118 or P0125?
s the engine coolant tempera-
ure between 75°C (1 67°F) and
)5"C (203"F)?
I
EN(D0HC TURBO)-I 19