Subaru 2009 IMPREZA Service Manual page 616

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Diagnostic Procedure with Diagnostic Trouble Code (DTC)

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.

• Subaru Select Monitor

For detailed operation procedures, refer to

"READ CURRENT DATA FOR ENGINE". <Ref.

to EN(H4SO)(diag)-34, Subaru Select Moni-

• General scan tool

For detailed operation procedures, refer to the

general scan tool operation manual.

CHECK EGR VALVE.

Remove the EGR valve.

Is the measured value 53.3 kPa

(400 mmHg, 15.75 inHg) or

Are there any holes, clogged

lines or foreign matters in the

EN(H4SO)(diag)-199

ENGINE (DIAGNOSTICS)

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

valve. <Ref. to

FU(H4SO)-35,