Subaru 2002 IMPREZA Service Manual page 1321

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
Step
7 CHECK INTAKE AIR TEMPERATURE SEN-
SOR.
1)Start the engine and warm-up engine until
coolant temperature is greater than 60°C
(140°F).
2)Place the shift lever in neutral position.
3)Turn the A/C switch to OFF.
4)Turn all accessory switches to OFF.
5)Open the front hood.
6)Measure the ambient temperature.
7)Read the data of intake manifold pressure
sensor signal using Subaru Select Monitor or
OBD-II general scan tool.
NOTE:
•Subaru Select Monitor
For detailed operation procedure, refer to the
"READ CURRENT DATA FOR ENGINE".
<Ref. to EN(TURBO)-34, Subaru Select Moni-
tor.>
•OBD-II general scan tool
For detailed operation procedure, refer to the
OBD-II General Scan Tool Instruction Manual.
Check
Is the value obtained when
ambient temperature is sub-
tracted from intake air temper-
ature greater than −10°C
(14°F) and less than 50°C
(122°F)?
EN(TURBO)-161
ENGINE (DIAGNOSTICS)
Yes
Contact with your Check the mass
Subaru distributor air flow and intake
service. air temperature
sensor. <Ref. to
NOTE:
FU(TURBO)-34,
Inspection by DTM
Mass Air Flow and
is required, be-
Intake Air Temper-
cause probable
ature Sensor.>
cause is deteriora-
tion of multiple
parts.
No