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Circuit/System Verification

    IMPORTANT: When reprogramming a control module which has already been programmed, additional security measures must be met before reprogramming is allowed. Prior to programming, security access must be granted by connecting a Tech 2 in a pass-thru arraignment and requesting security access in TIS. Once security access is granted, the security code must be entered. The security code can be found in DealerWorld. Both of these security measures must be met before the Reset ECU selection is allowed.
  1. Ignition ON, select Reset ECU on the scan tool for the ECM.
  2. Perform the Programming and Setup procedure for the ECM. Refer to Control Module References for programming and setup procedures. Verify the DTC does not reset after programming.
    • If the DTC resets, replace the ECM.
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