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Home >> Chevrolet >> 2004 >> Optra Base, Automatic >> Repair and Diagnosis >> Electrical >> Charging Systems >> Engine Electrical System >> Diagnostic Information and Procedures >> DTC P0563 (w/Delphi Controller) >> Circuit Description

Circuit Description

The engine control module (ECM) uses the ignition 1 voltage circuit to monitor system voltage. Voltage that is out of range will cause damage to components and incorrect input readings. If the ECM detects an excessively high system voltage, DTC P0563 will set.

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