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Home >> Chevrolet >> 2017 >> SS Automatic Trans >> Repair and Diagnosis >> Brakes >> Traction Control >> Antilock Brake System >> Diagnostic Information and Procedures >> DTC B274A: Sport Mode Switch Circuit >> Component Testing
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Component Testing

  1. Ignition OFF, disconnect the harness connector at the S73 Suspension Mode Switch (V5B).
  2. Test for infinite resistance between the signal terminal 4 and the ground terminal 6 with the switch in the open position.
    • If less than infinite resistance 

      Replace the S73 Suspension Mode Switch (V5B).

  3. Test for less than 2 Ω between the signal terminal 4 and the ground terminal 6 with the switch in the closed position.
    • If 2 Ω or greater 

      Replace the S73 Suspension Mode Switch (V5B).

    • If less than 2 Ω 
  4. All OK.
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