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Home >> Buick >> 2017 >> Encore Base >> Repair and Diagnosis (Single Page) >> Steering >> Steering Wheel And Steering Column >> Diagnostic Information and Procedures >> DTC B2515: Steering Column Lock Motor Feedback Circuit Not Plausible >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the K60 Steering Column Lock Module. It may take up to 5 minutes for all vehicle systems to power down.
  2. Test for less than 3 V between the control circuit terminal 2 and ground.
    • If 3 V or greater 
    1. Disconnect the harness connector at the K9 Body Control Module. Ignition ON.
      NOTE:

      For vehicles with push button start, it is necessary to back out the terminal for the steering column lock status signal circuit at the K 9 Body Control Module harness. When the harness connector is removed, the vehicle cannot be put back into an Ignition ON state.

    2. Test for less than 3 V between the control circuit terminal 2 and ground.
      • If 3 V or greater, repair the short to voltage on the circuit.
      • If less than 3 V, replace the K9 Body Control Module.
    • If less than 3 V 
  3. Ignition ON.
  4. Test for B+ between the control circuit terminal 2 and ground.
    • If less than B+ 
    1. Disconnect the harness connector at the K9 Body Control Module.
    2. Test for infinite resistance between the signal circuit terminal 2 and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance
    3. Test for less than 2 Ω in the signal circuit terminal 2 end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω
    4. Replace the K9 Body Control Module.
    • If B+ 
  5. Replace the K60 Steering Column Lock Module.
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