abs unit

[mick45672]

hyas all imm trying to find out wether i have a bosch 2Si abs system or a bosch 5.3 system is there any way of telling by looking if so can anyone explian (or post photoes) or can i find out through bosch website
cheers
mick

[AMV]

hi there, in this picture 2Si is shown. It has that removable plastic cover where under it you can find relays for the unit (one for "brains" other for pump). 5.3 units don't have this cover, well atleast it looks different, and removing it you will not find those relays. And 2Si outlet pipes (the ones on top) are in line, on 5.3 they are in square formation.
Hope this helps.

[mick45672]

yep thanx and damn i got a 5.3 and that could well mean that its my edb thats causing all my troubles
many thanx
mick

[AMV]

What do you mean by "edb"? And what trouble?

[fantom alfa]

Think he mean to say "EBD" - electronic brake distribution

[mick45672]

yep thats it well my handbrake warning light is on semi permanatly(on 95% of the time then sometimes works perfectly) i have checked the wiring back to fusebox on both handbrake switch and brakefluid level indicator and all those wires are perfect but that warning loight also is the EBD warning light so as everything else seems fine can only be that wrong but as i dont know how to test the ecu i mayt just have to change it and see if it works

[AMV]

If we are talking about '96 gtv, i'm pretty shure it does not have ebd. that was introduced somewhere after '98 gtv's. I know, the manual still says that 5.3 has ebd, but not early years. Plus in that case your car has to have OBD II connection. And abs sensors are of that small type, using magnetic stripe on wheel hubs instead of toothed gear. Luckly 5.3 without ebd and obdII have seperate cable, wich can be used to read errof/fault codes. Cable has 3 pins. somewere near abs unit itself. one of the pins have to be connected to ground, key turned, and flashing light on dashboard gives the fault code.
My 2001 also has 5.3 unit with ebd. Means there are 8 outlet pipes from abs unit. Only possability to diagnose it is through OBD II. And in 5.3 with ebd, if it fails, you get two lights in dashboard - handbrake signal (!) and ABS warning light.

[mick45672]

cool thanx that helps loads
oh the joy
of course could goto plan c and just live with it