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Home >> Buick >> 2013 >> Verano Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 201 (Immobilizer System) >> Diagnostic Information and Procedures >> DTC B305C >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2012 Buick Verano. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON.
  2. Verify all available keys/transmitters are correct for the vehicle. This can be accomplished by comparing the part number that is laser etched on the key/transmitter to the part number listed in the parts catalog.
    • If a key/transmitter is not correct 

      Replace the appropriate key/transmitter.

    • If all keys/transmitters are correct 
  3. Verify the scan tool Key Part Number parameter displays a Key Part Number when turning the ignition ON with each key/transmitter.
    • If a Key Part Number is not read 

      Replace the appropriate key/transmitter.

    • If a Key Part Number is read for each key/transmitter 
  4. All OK.