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Home >> Cadillac >> 2009 >> Escalade EXT >> Repair and Diagnosis (Single Page) >> External Pages >> Different car >> Section 42 (Antilock Brake System, Traction Control System & Stability Control System) >> Diagnostic Information and Procedures >> DTC C0131 >> Circuit/System Testing
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Circuit/System Testing

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  1. Apply and release brake pedal. Verify brake lamps operate properly. If brake lamps do not operate properly, refer toSymptoms - Lighting Systems .
  2. Test the stop lamp supply voltage circuit for a short to voltage, short to ground, an open or high resistance.
    • If the stop lamp circuit tests normal, replace the EBCM/BPMV assembly.
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