2010 Cadillac CTS Sedan AWD V6-3.6L Page 288

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2010 Cadillac CTS Sedan AWD V6-3.6L Page 288



DTC Descriptor



DTC B1016 00



- Vehicle Identification Number (VIN) Information Not Programmed



Circuit/System Description



After a loss of battery power has been restored, the theft deterrent module (TDM) will perform a check on the stored vehicle identification number



(VIN). If the VIN is CORRECT, the TDM will run the VIN Timer for a programmable length of time, typically 10 minutes. The TDM will send a



message via the serial data circuit to the instrument panel cluster (IPC) to illuminate the SECURITY indicator. After the VIN Timer has timed out,



the security indicator will turn OFF. If the VIN is INCORRECT, the TDM will send the fuel disable password to the engine control module (ECM),



via the serial data circuit. The immobilizer system considers this to be a tamper and will not allow the vehicle to start. The TDM will send a



message via the serial data circuit to the IPC to flash the SECURITY indicator.



Conditions for Running the DTC



Ignition ON



Conditions for Setting the DTC



* The VIN check flag of the TDM is true.



* The TDM has determined that the battery has been reconnected after a battery disconnect.



Action Taken When the DTC Sets



* The vehicle will not start.



* The TDM sends the fuel disable message via the serial data circuit to the ECM.



* The TDM sends a message to the IPC to illuminate the SECURITY indicator.



Conditions for Clearing the DTC



The TDM clears the current DTC when the correct VIN information is present.



Reference Information



Schematic Reference



Immobilizer Schematics (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Diagrams/Electrical Diagrams/Immobilizer



Schematics)



Connector End View Reference



Component Connector End Views (See: Diagrams/Connector Views)



Description and Operation



Immobilizer Description and Operation (without Y41) (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Description and



Operation/Immobilizer Description and Operation (Without Y41))Immobilizer Description and Operation (with Y41) (See: Accessories and



Optional Equipment/Antitheft and Alarm Systems/Description and Operation/Immobilizer Description and Operation (With Y41))



Electrical Information Reference



* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)



* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)



* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit



Testing/Testing for Intermittent Conditions and Poor Connections)



* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)



Scan Tool Reference



Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information



Circuit/System Verification



With a scan tool, verify DTC B1016 is not set.



If DTC is set, program the TDM. If DTC resets, replace the TDM.



Repair Instructions



Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.



Control Module References (See: Testing and Inspection/Programming and Relearning) for TDM replacement, setup, and programming

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