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Home >> Cadillac >> 2019 >> XT5 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 48 (Immobilizer System) >> Diagnostic Information and Procedures >> DTC B3935 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2018 Cadillac XT5. However, it is still accessible from the selected car via links, so may be relevant.
  1. Replace the suspected inoperative or malfunctioning key/transmitter.
  2. Verify DTC B3935 does not set while operating the vehicle under the conditions for running the DTC.
    • If the DTC is set 

      Replace the K9 Body Control Module.

    • Go to next step: If the DTC is not set 
  3. All OK.
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