Diagnostic Instructions
DTC Descriptor
DTC B1016 : Vehicle Identification Number (VIN) Information Not Programmed
Circuit/System Description
After a loss of battery power has been restored, the theft deterrent control module will perform a check on the stored vehicle identification number (VIN). If the VIN is CORRECT, the theft deterrent control module will run the VIN Timer for a programmable
length of time, typically 10 minutes. The theft deterrent control module 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 theft deterrent control module 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 theft deterrent control module 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 theft deterrent control module is true. |
| • | The theft deterrent control module has determined that the battery has been reconnected after a battery disconnect. |
Action Taken When the DTC Sets
| • | The vehicle will not start. |
| • | The theft deterrent control module sends the fuel disable message via the serial data circuit to the ECM. |
| • | The theft deterrent control module sends a message to the IPC to illuminate the SECURITY indicator. |
Conditions for Clearing the DTC
| • | The theft deterrent control module clears the current DTC when the correct VIN information is present. |
| • | The DTC can be cleared by using a scan tool. |
Reference Information
Schematic Reference
Immobilizer Schematics
Connector End View Reference
Immobilizer Connector End Views
Description and Operation
Immobilizer Description and Operation
Electrical Information Reference
Scan Tool Reference
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
after completing the diagnostic procedure.
Control Module References
for TDM replacement, setup, and programming
