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Home >> Chevrolet >> 2017 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 10 (Antilock Brake System) >> Diagnostic Information and Procedures >> DTC C026C >> Circuit/System Verification

Circuit/System Verification

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 ON.
  2. Apply and release brake pedal. Verify the brake stop lamps operate properly.
    • Go to next step: If the brake stop lamps operate properly 
  3. Verify that DTC C026C is not set.
    • If the DTC is set 
    1. Perform the Brake Pressure Modulator Valve Pressure Sensor Calibration .
    2. Verify that the DTC does not set.
      • If the DTC sets, replace the Q5 Brake Pressure Modulator.
      • Go to next step: If the DTC does not set
    3. All OK.
    • Go to next step: If the DTC is not set 
  4. All OK.
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