Subaru LEGACY 2006 Manual page 268

asieps_tobira.book 231 ページ ２００９年１０月２６日 月曜日 午前９時１６分
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
1 CHECK ANY OTHER DTC ON DISPLAY.
2 CHECK AIR INTAKE SYSTEM.
1) Turn the ignition switch to ON.
2) Start and idle the engine.
3) Check the following items.
• Loose installation of intake manifold and
throttle body
• Cracks of intake manifold gasket and throttle
body gasket
• Disconnection of vacuum hoses
3 CHECK ELECTRONIC THROTTLE CON-
TROL.
1) Turn the ignition switch to OFF.
2) Remove the electronic throttle control.
3) Check the electronic throttle control.
Check
Is any other DTC displayed?
Is there any fault in air intake
system?
Are foreign matter found inside
electronic throttle control?
EN(H4SO)(diag)-231
ENGINE (DIAGNOSTICS)
Yes No
Check the appro- Go to step 3.
priate DTC using
the "List of Diag-
nostic Trouble
Code (DTC)".
<Ref. to
EN(H4SO)(diag)-
70, List of Diag-
nostic Trouble
Code (DTC).>
NOTE:
In this case, it is
not necessary to
inspect DTC P0507.
Go to step 3.
Repair air suction
and leaks.
Remove foreign Perform the diag-
matter from elec- nosis of DTC
tronic throttle con- P2101.
trol.