Vehicle & Technical > Range Rover
P38 brakes or lack of them!
Range Rover Blues:
I went through 3 litres of fluid replacing the pipes and bleeding the similar RRC ABS system, it is quite complicated and often frustrating to do.
barny:
I Dont think its a brake bleeding issue, if so then that'll come later. I just need to find out whats not making the pump run.
I can bridge the pump relay and the pump will work, but i cant see from the diagrams what controls the relay. It could either be the pressure control switch, the abs ecu or the BECM :shock:
Its starting to really [throw it] me off now, the local landy specialist will "look" at it for
Rossko:
--- Quote from: barny on July 12, 2010, 16:45:35 ---I can bridge the pump relay and the pump will work, but i cant see from the diagrams what controls the relay. It could either be the pressure control switch, the abs ecu or the BECM
--- End quote ---
Nowt to do with BECM.
If the pump or relay was duff, you should get an ABS fault light due to not recovering pressure when asked. No light? (Does the light work at switch on, and go away after a short drive?) That would suggest the pressure switch isn't calling the pump - it thinks pressure is good already.
I think the pressure switch is a dual affair, with both 'high' and 'low' pressure contacts, but have no wiring diagram to hand.
Have you read this?
http://www.rangerovers.net/repairdetails/braketc/abs.html
One of the interesting things it points out is that hard brake pedal probably indicates faulty pump/acc system
I reckon your mushy pedal was a properly working power system coping with poor fluid / bubbles / worn pads / mushy flexibles? If the pump had to work overtime to cope with it, you may now have a worn pump/burnt switch/burnt relay - plus the original mushy problem still lurking.
--- Quote from: barny on July 12, 2010, 16:45:35 ---I keep hearing about this RAVE thingy but not really sure what it is? Any links or info Gladly recieved :)
--- End quote ---
http://lmgtfy.com/?q=land+rover+rave+disc
Seriously, it is worth having
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