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Home >> Subaru >> 2023 >> BRZ Premium, Automatic Trans >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle System (Diagnostics) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC U0073: Control Module Communication Bus Off >> General Description >> 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 SPECIFICATION

Malfunction Criteria Threshold Value
The CAN controller performs confirmation of bus by 50 msec period and becomes bus off consecutively. 1 counts or more

Time needed for diagnosis:  10 count

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

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