Subaru IMPREZA GD 2007 Series Manual page 1658

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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
20 CHECK ELECTRONIC THROTTLE CONTROL.
Move the throttle valve to the fully open and fully
closed positions with fingers.
Check that the valve returns to the specified
position when releasing fingers.
Check
Does the valve return to the
specified position? Standard
value: 3 mm (0.12 in) from fully
closed position
EN(STI)(diag)-327
ENGINE (DIAGNOSTICS)
Yes No
Repair poor con- Replace the elec-
tact of the ECM tronic throttle con-
connector. trol. <Ref. to
FU(H4DOTC)-16,
Throttle Body.>