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Home >> Subaru >> 2015 >> Outback 2.5i >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Diagnostic Trouble Code (DTC) Detecting Criteria (H4DO) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC U0077 Lin Communication Bus "ECM/Pcm" Off >> Diagnostic Method

Diagnostic Method

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE

Malfunction Criteria Threshold Value
Data sent/received with control modules connected to LIN Does not change
  or
  Checksum error

Time Needed for Diagnosis:  1280 ms

Malfunction Indicator Light Illumination:  Illuminates as soon as a malfunction occurs.