DTC B1016 Instrument
DTC Descriptors
DTC B1016 47: VIN Not Programmed
Diagnostic Fault Information
Important: Always perform the
Diagnostic System Check - Vehicle
prior to using this diagnostic procedure.
Circuit/System Description
This code indicates that the Instrument Panel Cluster (IPC) has received an
invalid vehicle identification number (VIN) from the body control module (BCM).
Conditions for Running DTC
| • | System voltage is between 9-16 volts. |
| • | Ignition switch is in the ON position. |
Conditions for Setting the DTC
| • | VIN is not programmed in the IPC. |
| • | Communication is lost between the IPC and BCM. |
Conditions for Clearing the DTC
| • | VIN number is reprogrammed. |
| • | A valid VIN is received from the BCM. |
Reference Information
Scan Tool Reference
Control Module References
Circuit/System Testing
- Ignition ON, using the scan tool, verify that the correct VIN is being
broadcast from the BCM via the GMLAN.
| ⇒ | If the broadcasted VIN is correct, reprogram the VIN to the IPC using the scan
tool. |
- Clear all DTCs using the scan tool, verify that DTC B1016 is no
longer set as current.
| ⇒ | If the DTC B1016 is still current. Replace the IPC. |
Repair Instructions
Important: Always perform the
Diagnostic Repair Verification
after completing the diagnostic procedure.
Control Module References
for IPC replacement,
setup, and programming
DTC B1016 Theft
Diagnostic Instructions
DTC Descriptor
DTC B1016: Vehicle Identification Number 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 vehicle theft deterrent (VTD) 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 DTC
| • | When received VIN is matched to the VIN stored in EEPROM. |
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 disconnect. |
Action Taken When 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 flash the SECURITY indicator |
| • | The system will enter Theft Detected Mode. The display screen will show "Security
Lockout Active. Vehicle Data not programmed". |
Conditions for Clearing the DTC
| • | The theft deterrent control module clears the current DTC when the correct
VIN information is present. |
| • | The condition for setting the DTC is no longer present. |
| • | The history DTC will clear after 50 fault-free ignition cycles. |
| • | The DTC can be cleared using a scan tool. |
Reference Information
Schematic Reference
Theft Deterrent System Schematics
Connector End View Reference
Component Connector End Views
Scan Tool Reference
Control Module References
Circuit/System Testing
- Ignition OFF, wait for 30 seconds.
- Ignition ON, using the scan tool, select the DTC display function.
| ⇒ | If DTC B1016 is set to current, ensure the body control module (BCM)
transmits the VIN, to achieve this perform a 'Module/ECU Presence Check/VIN Check'
using the scan tool. The VIN can also be visually verified by reading the 'Additional
Functions/Read ECU Identification' data display. |
| ⇒ | If the BCM fails to transmit the VIN, replace the BCM. |
| ⇒ | If the BCM transmits the VIN, replace the TDM. |
Repair Instructions
Perform the
Diagnostic Repair Verification
.
Control Module References
for BCM/TDM
replacement, setup and programming.
