Subaru IMPREZA GD 2007 Series Manual page 399

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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
Step
19 CHECK ELECTRONIC THROTTLE CON-
TROL.
Measure the resistance between electronic
throttle control terminals.
Terminals
No. 2 — No. 1:
20 CHECK ELECTRONIC THROTTLE CON-
TROL.
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
Is the resistance 50 Ω or less? Go to step 20.
Does the valve return to the
specified position? Standard
value: 3 mm (0.12 in) from fully
closed position
EN(H4SO)(diag)-290
Yes No
Replace the elec-
tronic throttle con-
trol. <Ref. to
FU(H4SO)-12,
Throttle Body.>
Repair poor con- Replace the elec-
tact of the ECM tronic throttle con-
connector. trol. <Ref. to
FU(H4SO)-12,
Throttle Body.>