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Home >> Cadillac >> 2017 >> XT5 Base >> Repair and Diagnosis >> Body & Frame >> Ignition Switch/Steering Lock >> Immobilizer System >> Diagnostic Information and Procedures >> DTC B389A: Environment Identification >> Circuit/System Verification
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Circuit/System Verification

  1. Verify DTC B389A did not set immediately following the replacement and programming of the K9 Body Control Module.
    • If the DTC did not set immediately after the replacement and programming of the K9 Body Control Module 
  2. Perform the K9 Body Control Module immobilizer learn using body control module IMMO Function with Existing Transponder or Remote Key in SPS. Refer to Immobilizer System Component Programming (without BTM) Immobilizer System Component Programming (with BTM) .
  3. Verify DTC B389A does not set after programming.
    • If the DTC sets after programming 

      Replace the K9 Body Control Module.

    • If the DTC does not set after programming 
  4. All OK.
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