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Circuit/System Testing

  1. Ignition ON.
  2. Verify that DTC C0186, C018B, C0196, C019B, C0287, or C0710 is not set.
    • If none of the DTCs are set 
  3. Ignition OFF, allow the Q5 brake pressure modulator to cool down to ambient temperature, ignition ON.
  4. Verify that DTC C0280 54 does not set while driving the vehicle under normal braking conditions.
    • If the DTC sets 
    1. Replace the K17 electronic brake control module.
    2. Verify the DTC does not set while driving the vehicle under normal braking conditions.
      • If the DTC sets, replace the Q5 brake pressure modulator.
      • If the DTC does not set
    3. All OK.
    • If the DTC does not set 
  5. All OK.
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