Subaru 2002 IMPREZA Service Manual page 1264

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE (DIAGNOSTICS)
Step
1 CHECK IDLE SWITCH SIGNAL.
1)Turn the ignition switch to ON.
2)Operate the LED operation mode for engine
using Subaru Select Monitor.
NOTE:
•Subaru Select Monitor
For detailed operation procedure, refer to the
"LED OPERATION MODE FOR ENGINE".
<Ref. to EN(TURBO)-34, Subaru Select Moni-
tor.>
2 CHECK ANY OTHER DIAGNOSTIC TROU-
BLE CODE (DTC) ON DISPLAY.
3 CHECK CONDITION OF INTAKE MANIFOLD
PRESSURE SENSOR.
4 CHECK CONDITION OF THROTTLE BODY. Is the throttle body installation
Check
Does the LED of {Idle Switch
Signal} come on?
Is any other DTC displayed?
Is the pressure sensor installa-
tion bolt tightened securely?
bolt tightened securely?
EN(TURBO)-104
Yes
Go to step 2. Check the throttle
position sensor cir-
cuit. <Ref. to
EN(TURBO)-127,
DTC P0121 —
THROTTLE POSI-
TION SENSOR
CIRCUIT RANGE/
PERFORMANCE
PROBLEM (HIGH
INPUT) —, Diag-
nostic Procedure
with Diagnostic
Trouble Code
(DTC).>
NOTE:
In this case, it is
not necessary to
inspect
P0106.
Inspect the rele- Go to step 3.
vant DTC. "List of
Diagnostic Trou-
ble Code (DTC)".
<Ref. to
EN(TURBO)-75,
List of Diagnostic
Trouble Code
(DTC).>
NOTE:
In this case, it is
not necessary to
inspect DTC
P0106.
Go to step 4. Tighten the pres-
sure sensor instal-
lation bolt
securely.
Replace the pres- Tighten the throttle
sure sensor. <Ref. body installation
to FU(TURBO)-35, bolt securely.
Pressure Sensor.>
No
DTC