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Home › Chevrolet › 2012 › Orlando LS, Automatic Trans › Repair and Diagnosis › Brakes › Traction Control › Antilock Brake System › Diagnostic Information and Procedures › DTC B2745 › Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the S75 Traction Control Switch.
  2. Test for less than 5 Ω between the ground circuit terminal 4 and ground.
    • If greater than 5 Ω 

      Repair the open/high resistance in the circuit.

    • If less than 5 Ω 
  3. Ignition ON, verify the scan tool BCM Traction Control Switch parameter is Inactive.
    • If the parameter is Active 
    1. Ignition OFF, disconnect the X2 harness connector at the K9 Body Control Module.
    2. Test for infinite resistance between the signal circuit terminal 2 at the S75 Traction Control Switch and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance, replace the K9 Body Control Module.
    • If the parameter is Inactive 
  4. Install a 3 A fused jumper wire between the signal circuit terminal 2 and ground.
  5. Verify the scan tool BCM Traction Control Switch parameter is Active.
    • If the parameter is Inactive 
    1. Ignition OFF.
    2. Disconnect the X2 harness connector at the K9 Body Control Module, ignition ON
    3. Test for less than 0.3 V the signal circuit and ground.
      • If greater than 0.3 V, repair the short to voltage on the circuit.
      • If less than 0.3 V
    4. Ignition OFF.
    5. Test for less than 2 Ω in the signal circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the K9 Body Control Module.
    • If the parameter is Active 
  6. Replace the S75 Traction Control Switch.
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