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Traction Control / ABS: Anti-lock Brake System / Control Units / Hydraulic Control Unit

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HcuprsHldcap.jpg (12492 bytes)
The hydraulic control unit is inline between the master cylinder and the calipers.

 

hcupic.jpg (26320 bytes) The Hydraulic Cotrol Unit (HCU) receives instructions from the Electronic Control Unit.  

 

hculoc.jpg (21082 bytes) The Hydraulic Control Unit is in-line between the master cylinder and the brake calipers.  

 

 

HCUprsredcap.jpg (13138 bytes)
If road conditions are such that even with pressure holding the wheel is still in danger of lock-up, full current is applied to the valve and it's moved to the pressure reduction position, uncovering a return channel.



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