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Home >> Chevrolet >> 2008 >> Optra LS, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 2.0L (Diesel) >> Diagnostic Information and Procedures >> DTC P0683 >> Circuit/System Description

Circuit/System Description

The glow plug control module monitors the glow plugs, and control circuits for faults. This information is communicated to the engine control module (ECM) over a discrete communication circuit.