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Home >> Subaru >> 2013 >> Forester XT Touring >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 14 (Diagnostic Trouble Code (DTC) Detecting Criteria (H4DO)) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC U0402 Can (TCU) Data Abnormal >> Diagnostic Method

Diagnostic Method

WARNING: This page is about a different variant/trim than selected.

Judge as NG when the following conditions are established.

JUDGMENT VALUE

Malfunction Criteria Threshold Value
Battery voltage > 10.9 V
Starter switch OFF
Engine run
Data updated from control module connected to CAN None during 2000 milliseconds

Time Needed for Diagnosis:  2 seconds

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

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE

Malfunction Criteria Threshold Value
Engine run
Data updated from control module connected to CAN Yes

Time Needed for Diagnosis:  1000 ms