Subaru Impreza 2003 Service Manual page 1448

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE (DIAGNOSTICS)
CM:DTC P1092 — TUMBLE GENERATED VALVE SYSTEM 2 (VALVE OPEN) —
• DTC DETECTING CONDITION:
• Immediately at fault recognition
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H4DOTC)-48, OP-
ERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H4DOTC)-40, Inspection Mode.>.
Step
1 CHECK ANY OTHER DTC ON DISPLAY.
2 CHECK TUMBLE GENERATOR VALVE RH.
1)Remove the tumble generator valve assem-
bly.
2)Check the tumble generator valve body.
CN:DTC P1093 — TUMBLE GENERATED VALVE SYSTEM 2 (VALVE CLOSE) —
• DTC DETECTING CONDITION:
• Immediately at fault recognition
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H4DOTC)-48, OP-
ERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H4DOTC)-40, Inspection Mode.>.
Step
1 CHECK ANY OTHER DTC ON DISPLAY.
2 CHECK TUMBLE GENERATOR VALVE RH.
1)Remove the tumble generator valve assem-
bly.
2)Check the tumble generator valve body.
Check
Is any other DTC displayed?
Does the tumble generator
valve move smoothly? (No dirt
or foreign materials clogged)
Check
Is any other DTC displayed?
Does the tumble generator
valve move smoothly? (No dirt
or foreign materials clogged)
EN(H4DOTC)-272
Yes
Inspect the rele- Go to step 2.
vant DTC using
"List of Diagnostic
Trouble Code
(DTC)". <Ref. to
EN(H4DOTC)-75,
List of Diagnostic
Trouble Code
(DTC).>
Replace the tum- Clean the tumble
ble generator generator valve.
valve assembly.
<Ref. to
FU(H4DOTC)-41,
Tumble Generator
Valve Assembly.>
Yes
Inspect the rele- Go to step 2.
vant DTC using
"List of Diagnostic
Trouble Code
(DTC)". <Ref. to
EN(H4DOTC)-75,
List of Diagnostic
Trouble Code
(DTC).>
Replace the tum- Clean the tumble
ble generator generator valve.
valve assembly.
<Ref. to
FU(H4DOTC)-41,
Tumble Generator
Valve Assembly.>
No
No