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Home >> Chevrolet >> 2021 >> Traverse LS, FWD >> Repair and Diagnosis >> Brakes >> Traction Control >> Antilock Brake System >> Diagnostic Information and Procedures >> DTC B273A >> Component Testing

Component Testing

  1. Ignition OFF, disconnect the X1 harness connector at the S126 Drive Mode Select Switch.
  2. Test for infinite resistance between the signal terminal 11 and the ground terminal 10 with the switch in the open position.
    • If less than infinite resistance 

      Replace the S126 Drive Mode Select Switch.

    • Go to next step: If infinite resistance 
  3. Test for less than 2 Ω between the signal terminal 11 and the ground terminal 10 with the switch in the closed position.
    • If 2 Ω or greater 

      Replace the S126 Drive Mode Select Switch.

    • Go to next step: If less than 2 Ω 
  4. All OK.