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Home >> Subaru >> 2017 >> Legacy 3.6R Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 13 (Engine Control System (Diagnostics) (P0171 To P0685) (H4DO)) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0685: ECM/Pcm Power Relay Control Circuit/Open >> Outline Of Diagnosis

Outline Of Diagnosis

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

Detect the main relay stuck to ON.

Judge as NG when the main relay does not turn to OFF after turning OFF the ignition switch and ECM keeps operating for more than the predetermined time.

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