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Circuit/System Verification

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON.
  2. Verify that DTC B1405 is not set.
    • Go to next step: If the DTC is not set 
  3. Verify that DTC B0954 01, B0955 01, B0956 01, B0957 01 B0954 21, B0955 21, B0956 21 or B0957 21 is not set.
    • If the DTC is set 
    1. Verify the B306 Parking Assist Sensors are not contaminated with snow, mud, dirt, slush, or ice.
      • If contaminated, clean the B306 Parking Assist Sensors.
      • Go to next step: If there is no contamination
    2. Refer to Circuit/System Testing.
    • Go to next step: If the DTC is not set 
  4. Verify that DTC B0954 3A, B0955 3A, B0956 3A or B0957 3A is not set.
    • If the DTC is set 

      Replace the appropriate B306 Parking Assist Sensor with the correct sensor type.

    • Go to next step: If the DTC is not set 
  5. Ignition ON, transmission in R.
  6. Verify the scan tool Parking Assist System Status parameter is Enabled.
    • If the parameter is Disabled 

      Refer to Circuit/System Testing.

    • Go to next step: If the parameter is Enabled 
  7. All OK.
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