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Home >> Chevrolet >> 2008 >> Optra LS, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 1.8L (LDA) >> Diagnostic Information and Procedures >> Idle Air Control (IAC) System Diagnosis >> Circuit/System Verification

Circuit/System Verification

  1. Engine running at operating temperature. The engine speed should be within 200 RPM of the Desired Idle Speed.
  2. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
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