CUSTOMER CONCERN Customer states the ABS warning light is on and brake-pedal operation feels abnormal. The ABS module stores C1524, C1526 and U2023. CAUSE Circuit testing at the brake-pedal position sensor found the sensor signal did not agree with the 5-volt reference circuits on the Blue/Brown and Brown/White wires, confirming a failed BPP sensor. CORRECTION Remove and replace brake-pedal position sensor. Perform sensor calibration and clear ABS DTCs.