Subaru 2002 IMPREZA Service Manual page 551

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
Step
1 CHECK ANY OTHER DIAGNOSTIC TROU-
BLE CODE (DTC) ON DISPLAY.
2 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-II general
scan tool.
NOTE:
•Subaru Select Monitor
For detailed operation procedure, refer to the
"READ CURRENT DATA FOR ENGINE".
<Ref. to EN-34, Subaru Select Monitor.>
•OBD-II general scan tool
For detailed operation procedures, refer to the
OBD-II General Scan Tool Instruction Manual.
Check
Is any other DTC displayed?
Is the engine coolant tempera-
ture between 75°C (167°F)
and 95°C (203°F)?
EN-119
ENGINE (DIAGNOSTICS)
Yes
Inspect the rele- Go to step 2.
vant DTC using
"List of Diagnostic
Trouble Code
(DTC)". <Ref. to
EN-83, List of
Diagnostic Trou-
ble Code (DTC).>
NOTE:
In this case, it is
not necessary to
inspect DTC
P0111.
Replace the intake Inspect the DTC
air temperature P0125 using "17.
and pressure sen- List of Diagnostic
sor. <Ref. to FU- Trouble Code
37, Intake Air (DTC)". <Ref. to
Temperature and EN-83, List of
Pressure Sensor.> Diagnostic Trou-
ble Code (DTC).>
No