Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptor
DTC B3031 00: Security System Controller In Learn ModeCircuit/System Description
When learning a coded key, the body control module (BCM) is placed in learn mode. DTC B3031 will set automatically as an indicator that the system is in learn mode and not as a fault indicator. Once the coded key is learned, learn mode will be exited and the DTC cleared. If the BCM does not exit learn mode, B3031 will remain current and indicate a fault. The instrument cluster security indicator will turn ON and the driver information center will display a message.
Conditions for Running the DTC
The immobilizer system is the learn coded keys state.
Conditions for Setting the DTC
DTC B3031 will set any time the BCM enters the learn coded keys state.
Action Taken When the DTC Sets
The security indicator will illuminate. The driver information center will display a message.
Conditions for Clearing the DTC
| • | A current DTC B3031 will be cleared upon the successful exit of learn mode. |
| • | A history DTC will be cleared after 100 malfunction-free ignition cycles or when a scan tool is used to clear DTCs. |
Reference Information
Schematic Reference
Connector End View Reference
Description and Operation
Immobilizer Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
- Verify DTC B3055 is not set as current.
- Verify the scan tool body control module Total Keys Learned parameter displays a learned key.
- Perform the Vehicle Key Relearn procedure. Refer to Replacing Keys. The Body Control Module should exit the learn coded key state and DTC B3031 should clear.
| ⇒ | If DTC B3055 is set as current, refer to DTC B3055. |
| ⇒ | If not the specified value, perform the Vehicle Key Relearn procedure. Refer to Replacing Keys. |
| ⇒ | If the Body Control Modules does not exit the learn coded key state after the programming attempt, replace the K9 Body Control Module (BCM). |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for BCM replacement, setup and programming
