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Home >> Chevrolet >> 2020 >> Bolt EV LT >> Repair and Diagnosis >> Body & Frame >> Ignition Switch/Steering Lock >> Immobilizer System >> Diagnostic Information and Procedures >> DTC B389A >> Circuit/System Verification

Circuit/System Verification

  1. Ignition - On / Vehicle - In Service Mode
  2. A DTC may set if control module K9 is not programmed after replacing control module K9.
    • Go to next step: If the DTC sets K9 Body Control Module - Programmed 
  3. Verify DTC B3902 is not set.
    • Go to next step: If DTC B3902 is not set 
  4. Perform the SPS function: Z1 Immobilizer Function - K9 Body Control Module Refer to Immobilizer System Component Programming 
  5. Verify DTC B389A is not set.
    • If DTC B389A is set 

      Replace the component: K9 Body Control Module

    • Go to next step: If DTC B389A is not set 
  6. All OK.