Checking the ABS hydraulic modulator
Check that the new ABS hydraulic modulator is the correct type depending on whether the car is equipped with STC (stability and traction control) or not.
An ABS modulator for ABS has only eight valves while an ABS modulator for ABS and STC (stability and traction control) has ten valves.
WARNING:
Never, under any circumstances,
open the ABS hydraulic modulator. Reassembling it requires special equipment and facilities.