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Home >> Subaru >> 2020 >> Forester Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Diagnostics) (4 Of 4) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC U0284: Lost Communication With Active Grille Shutter Module "A" >> General Description >> Diagnostic Method

Diagnostic Method

Judge as NG when the following conditions are established.

JUDGMENT VALUE SPECIFICATION

Malfunction Criteria Threshold Value
Data from control modules connected to LIN None

Time needed for diagnosis:  3000ms

Malfunction indicator light illumination:  Illuminates as soon as a malfunction occurs.