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Home >> Buick >> 2017 >> Cascada Base >> Repair and Diagnosis >> Body & Frame >> Ignition Switch/Steering Lock >> Immobilizer System >> Diagnostic Information and Procedures >> DTC P1629 >> Circuit/System Verification

Circuit/System Verification

  1. Verify there are no immobilizer DTCs set in the K9 Body Control Module.
    • Go to next step: If no immobilizer DTCs are set in the K9 Body Control Module 
  2. Perform the K9 Body Control Module immobilizer learn using the Body Control Module IMMO Function with Existing Transponder or Remote Key in SPS. Refer to Immobilizer System Component Programming .
  3. Verify the K9 Body Control Module successfully completes the learn procedure and the engine starts.
    • If the BCM does not successfully learn or the engine does not start 

      Perform the K20 Engine Control Module immobilizer learn using the Engine Control Module IMMO Learn in SPS. Refer to Immobilizer System Component Programming .

    • Go to next step: If the vehicle starts 
  4. All OK.
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