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Home >> GMC >> 2016 >> Yukon Denali, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 91 (Object Detection System And Pedestrian Protection System) >> Diagnostic Information and Procedures >> DTC B390A: Short Range Object Sensor Performance >> Circuit/System Verification
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Circuit/System Verification

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  1. Ignition ON.
  2. Verify DTC B390A 08 or DTC B390A 45 is not set.
    • If either DTC is set 
    1. Program the appropriate B233 Radar Sensor Module - Short Range.
    2. Verify DTC B390A 08 or DTC B390A 45 is not set after programming.
      • If either DTC sets after programming, replace the appropriate B233 Radar Sensor Module - Short Range.
      • If the DTC does not set
    3. All OK.
    • If both DTCs arenot set 
  3. Verify DTC B390A 54 is not set.
    • If the DTC is set 

      Replace the appropriate B233 Radar Sensor Module - Short Range.

    • If the DTC is not set 
  4. Verify DTC B390A 58 is not set.
    • If DTC is set 
    1. Verify the area in front of the sensor is clean, unobstructed, and damage-free.
      • If not clean, unobstructed, and damage-free, clean or repair as necessary.
      • If clean, unobstructed, and damage-free
    2. Replace the appropriate B233 Radar Sensor Module - Short Range.
    • If DTC is not set 
  5. Verify DTC B390A 67 is not set.
    • If the DTC is set in more than one B233 Radar Sensor Module - Short Range 
    1. Verify none of the B233 Radar Sensor Module - Short Range have not been swapped side to side.
      • If any B233 Radar Sensor Module - Short Range have been swapped, return them to their original position.
      • If none of the B233 Radar Sensor Module - Short Range have been swapped
    2. Replace the appropriate B233 Radar Sensor Module - Short Range.
    • If the DTC is set in only one B233 Radar Sensor Module - Short Range 

      Refer to Circuit/System Testing

    • If the DTC is not set 
  6. All OK.
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