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Home >> Subaru >> 2021 >> Forester Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Diagnostics) (2 Of 4) >> Diagnostic Procedure With Diagnostic Trouble Code (DTC) >> DTC P059F: Active Grille Air Shutter "A" Performance/Stuck Off >> General Description >> Diagnostic Method

Diagnostic Method

Judge as NG when the following conditions are established.

JUDGMENT VALUE SPECIFICATION

Malfunction Criteria Threshold Value
Changing rate of the active grille shutter in 15000ms Less than 94%

Time needed for diagnosis  : 15000ms

Malfunction indicator light illumination  : Illuminates when malfunction occurs in 2 continuous driving cycles.

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