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Home >> Cadillac >> 2017 >> Escalade Base, 4WD >> Repair and Diagnosis (Single Page) >> Body & Frame >> Ignition Switch/Steering Lock >> Immobilizer System >> Diagnostic Information and Procedures >> DTC B3031: Security Controller In Learn Mode (with BTM) >> Circuit/System Verification
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Circuit/System Verification

  1. Verify all available keyless entry transmitters are correct for the vehicle. This can be accomplished by comparing the part number that is laser etched on the transmitter to the part number listed in the parts catalog.
    2. NOTE:

    On some model year vehicles two learned keys are required to add additional keys. If only one learned key is used, this DTC will set. If only one learned key is available then Replacing Keys must be performed.

    • If a transmitter is not correct 

      Replace the transmitter

    • If all transmitters are correct 
  3. Verify the scan tool Immobilizer data displays two or more keys learned to the vehicle.
    • If not 

      Add one additional key

    • If two or more keys are learned to the vehicle 
  4. Perform the Transmitter Programming procedure. Refer to Remote Control Door Lock Transmitter Learn (with BTM) .
  5. Verify the K9 Body Control Module learns the vehicle key and exits learn mode. The scan tool Master Keys Learned parameter should increment to 1.
    • If the K9 Body Control Module does not exit learn mode after the programming attempt 

      Replace the K9 Body Control Module

    • If the K9 Body Control Module exits learn mode after the programming attempt 
  6. All OK.
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