Subaru IMPREZA GD 2007 Series Manual page 293

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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
Step
1 CHECK CURRENT DATA.
1) Start the engine.
2) Read data of intake manifold absolute pres-
sure signal using Subaru Select Monitor or gen-
eral scan tool.
NOTE:
• Subaru Select Monitor
For detailed operation procedures, refer to
"READ CURRENT DATA FOR ENGINE". <Ref.
to EN(H4SO)(diag)-32, Subaru Select Monitor.>
• General scan tool
For detailed operation procedure, refer to the
general scan tool operation manual.
2 CHECK EGR SOLENOID VALVE.
Remove the EGR valve.
Check
Is the measured value 53.3 kPa
(400 mmHg, 15.75 inHg) or
more?
Are there holes, plugged piping
or foreign objects caught in the
EGR system?
EN(H4SO)(diag)-184
Yes No
Make sure that the Go to step 2.
EGR valve, mani-
fold absolute pres-
sure sensor and
throttle body are
installed securely.
Repair the EGR Replace the EGR
system. valve. <Ref. to
FU(H4SO)-29,
EGR Valve.>