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Home >> Buick >> 1988 >> Reatta >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System >> Functional Check >> Chart A14 "Pressure Reduction" Fault >> Notes

Chart A14 "Pressure Reduction" Fault: Notes

  1. Codes will set when EBCM commands a pressure reduction to a wheel hydraulic circuit for a period of time, but circuit did not respond as EBCM expected to. This could be caused by wheel speeding up when EBCM signaled a reduction of pressure to that wheel.
  2. Possible causes are: erroneous wheel sensor signals, improper valve activation, defective wheel brake or long term exposure to strong electromagnetic interference.
NOTE: Codes 51-54 and 71-74 indicate a condition which may be attributable to either the wheel speed sensor circuit or the outlet valve