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Home >> Subaru >> 2023 >> 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 U0402: Invalid Data Received From TCM >> 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 CAN No:  change

Time needed for diagnosis:  500 ms

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