DTC B1015
Diagnostic Instructions
DTC Descriptor
DTC B1015 00: Vehicle Identification Number (VIN) Information Error
Circuit Description
After battery power has been restored following a loss of power, 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 immobiliser system considers this to be an indication of tampering 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
The ignition is 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 will run the VIN Timer for a programmable length of time, typically 10 minutes. |
• | 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
Immobiliser Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Immobiliser Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
- With a scan tool, verify the stored VIN in the BCM matches the actual vehicle VIN.
⇒ | If VIN does not match, perform the BCM Programming/RPO Configuration procedure. If the BCM VIN does not match the actual VIN after programming, replace the BCM. |
- With a scan tool, verify that the VIN of any module that stores the VIN matches the actual vehicle's VIN.
⇒ | If any module's stored VIN does not match the actual VIN, perform the setup procedure for that module. If the stored VIN does not match after setup, replace the module. |
⇒ | If the stored VINs of all modules match the actual VIN, replace the TDM. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for control module replacement, setup and programming
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