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Home >> Chevrolet >> 2017 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 48 (Seat Belt System) >> Diagnostic Information and Procedures >> DTC B0072 or B0073 >> Component Testing

Component Testing

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 OFF. Scan tool disconnected. Disconnect the harness connector at the appropriate B153 Seat Belt Buckle. It may take up to 2 min for all vehicle systems to power down.
  2. Test for less than 5 Ω between the signal terminal 1 and the low reference terminal 2.
    • If 5 Ω or greater 

      Replace the B153 Seat Belt Buckle.

    • Go to next step: If less than 5 Ω 
  3. Insert the seat belt into the buckle.
  4. Test for infinite resistance between the signal terminal 1 and the low reference terminal 2.
    • If less than infinite resistance 

      Replace the B153 Seat Belt Buckle.

    • Go to next step: If infinite resistance 
  5. All OK.