Subaru 2002 IMPREZA Service Manual page 510

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE (DIAGNOSTICS)
Step
1 CHECK ANY OTHER DTC ON DISPLAY.
2 FHECK TUMBLE GENERATOR VALVE RH
1)Remove the tumble generator valve assem-
bly.
2)Check tumble generator valve body.
BZ:DTC P1090 -TUMBLE GENERATOR VALVE SYSTEM #1 (RH) MALFUNC-
DTC DETECTING CONDITION:
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(D0HC TURBO)-
49, OPERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(D0HC TURBO)-46, Inspec-
tion Mode.>.
TION (STUCK OPEN)
-
immediately at fault recognition
Check Yes
Does the Subaru Select Moni- Inspect DTC
tor or OBD-ll general scan tool P1088, P1089,
indicate P1088, P1089, P1094 PI094 or PI095
or P I 095? using List of Diag-
nostic Trouble
Code (DTC) <Ref.
to EN(D0HC
TURBO)-80, List
of Diagnostic Trou-
ble Code (DTC).>
Does the tumble generator Replace the tum-
valve move smoothly? (No dirt ble generator valve
or foreign materials clogged) assembly. <Ref. to
FU(D0HC
TURBO)-40, Tum-
ble Generator
Valve Assembly.>
No
Go to step 2.
Clean tumble gen-
erator valve.
EN(D0HC TURBO)-286