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Home >> Chevrolet >> 2006 >> Optra5 LS, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 2.0L (L34 GMDAT) - DTC P0404 To DTC P2110 >> DTC P0630 >> Circuit/System Verification

Circuit/System Verification

    IMPORTANT: The ECM cannot determine if the VIN programmed into the control module is valid. Always verify that the VIN displayed on the scan tool is correct for that vehicle.
  1. Ignition ON, observe the Vehicle Information under I/M System Information on the scan tool. The VIN information should match the vehicles VIN.
    • If a VIN is not displayed, program the VIN with a scan tool.
    • If a VIN is displayed, clear the DTCs with a scan tool. If DTC P0630 sets after clearing the DTCs, replace the ECM.
  2. If the vehicle passes the Circuit/System Verification Test, then operate the vehicle within the conditions for running the DTC. You may also operate the vehicle within the conditions that are captured in the Freeze Frame/Failure Records Data List.
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