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Home >> Buick >> 2013 >> Enclave Premium, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 171 (Object Detection System) >> Diagnostic Information and Procedures >> DTC B390A: Short Range Object Sensor >> Circuit/System Verification
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Circuit/System Verification

WARNING: This page is about a different car, the 2015 Cadillac SRX. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON.
  2. Verify that B390A 08 or B390A 45 is not set.
    • If either DTC is set 
    1. Program the appropriate B233 Radar Sensor Module - Short Range.
    2. Verify the DTC does not set.
      • If the DTC sets, replace the appropriate B233 Radar Sensor Module - Short Range.
      • If the DTC does not set
    3. All OK.
    • If DTC is not set 
  3. Verify that B390A 54 is not set.
    • If DTC is set 

      Replace the appropriate B233 Radar Sensor Module - Short Range.

    • If the DTC is not set 
  4. Verify that 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.
        NOTE:

        After correcting the problem, it may be necessary to drive the vehicle to clear the DTC. Refer to Diagnostic Aids.

      • If clean, unobstructed, and damage-free, replace the appropriate B233 Radar Sensor Module - Short Range.
    • If DTC is not set 
  5. Verify that B390A 67 is not set.
    • If DTC is set in both modules 
    1. Verify modules have not been swapped side to side.
      • If modules have been swapped, swap them back.
      • if modules have not been swapped or DTC persists, refer to Circuit/System Testing.
    • If DTC is set in one module 

      Refer to Circuit/System Testing

    • If DTC is not set 
  6. All OK.
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