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Home >> Subaru >> 2017 >> Forester 2.0XT Touring >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 15 (Engine Control System (Diagnostics) (P2101 To U171F) (H4DO)) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC U0402 Invalid Data Received From TCM >> Diagnostic Method

Diagnostic Method

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Judge as NG when the following conditions are established.

JUDGMENT VALUE SPECIFICATION

Malfunction Criteria Threshold Value
Data updated from control module connected to CAN None

Time needed for diagnosis:  2 seconds

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

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