Subaru FORESTER 2001 Service Manual page 275

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
Engine (Diagnostics)
BQ: DTC P1091 — TUMBLE GENERATOR VALVE SYSTEM #1 (RH)
MALFUNCTION (STUCK CLOSE) —
¼ DTC DETECTING CONDITION:
¼ Immediately at fault recognition
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(DOHC TURBO)-
47, OPERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(DOHC TURBO)-44, Inspec-
tion Mode.>.
No.
1 CHECK ANY OTHER DTC ON DISPLAY.
2 CHECK TUMBLE GENERATOR VALVE RH
1) Remove tumble generator valve assembly.
2) Check tumble generator valve body.
S088521H78
Step
Does the Subaru Select
Monitor or OBD-II general
scan tool indicate P1088,
P1089, P1094 or P1095?
Does tumble generator
valve move smoothly? (No
dirt or foreign materials
clogged)
EN(DOHC TURBO)-274
Check Yes
Inspect DTC
P1088, P1089,
P1094 or P1095
using List of Diag-
nostic Trouble
Code (DTC) <Ref.
to EN(DOHC
TURBO)-82, List
of Diagnostic
Trouble Code
(DTC).>
Replace tumble
generator valve
assembly. <Ref.
to FU(DOHC
TURBO)-40,
Tumble Generator
Valve Assembly.>
No
Go to step 2.
Clean tumble gen-
erator valve.