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Home >> Subaru >> 2022 >> 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 U171F: Lost Lin Communication With Generator >> General Description >> Diagnostic Method

Diagnostic Method

Judge as NG when the following conditions are established.

JUDGMENT VALUE SPECIFICATION

Malfunction Criteria I Threshold Value
Data received from control modules connected to LIN No change Or, Checksum error
|Or, I  
Internal malfunction flag of generator (communication failure warning) ON

Time needed for diagnosis:  2048 ms

Malfunction indicator light illumination:  Does not illuminate even when malfunction occurs. (Charge warning light illuminates)

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