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Electronic Brake Control Module|Service and Repair > < Electrical Specifications|Page 3776
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compared with this reference speed. If any of the signals depart from this reference value, the modulating procedure will be activated, as follows:

Phase 1

Lock-up tendency detected. System prevents increase in brake pressure.

Phase 2

Initiation of ABS modulation. Brake pressure reduced, held constant or increased, depending on increase or decrease in wheel rpm.

Phase 3

Tendency for wheel to lock gone. Brake pressure increased depending on road adhesion checked in phase 2.

Electronic Brake Control Module|Service and Repair > < Electrical Specifications|Page 3776