Thread: defender 2006 traction control not working.

Thanks for all your help people, I'll be pulling the unit apart this afternoon, and will find out whats happening.. if you interested keep checking back I'll post some photos of what I find.

To sum up, when my pump turns on it's dead quite, can only tell it's on with a hand on the unit, I have since watched few youtube vids of a power bleed, what a difference in noise - something sus there!

According to this PDF I found (hummers have the same unit) Dropbox - absmod.pdf - it shows there is an off-centred bearing that depresses some "plungers" while rotating in the pump body I suspect that this bearing is either missing (maybe from factory), fallen apart or the shaft has sheared, as there is no pressure in in the brakes from TC no kicking from ABS and no pump noise, I wouldn't expect both "plunger" seals to fail at the same time and even then there would still be some audible noise from the module if they were being contacted by the bearing.

Does this sound like a reasonable assumption and possible cause of my issue?

Also just a heads up I found a post claiming the OP fitted a D2 modulator to his defender - the d2 unit has different ports but he just tried connect it as if it was a defender unit and it works perfectly each wheel being braked correctly see the post for more info, he posted back a year later saying he's had no issues to date - Land Rover Defender TD5 ABS Modulator | LandyZone - Land Rover Forum

Thanks for the help people!

Just watched some power bleeds online - wow what a noise.. after reading this PDF Dropbox - absmod.pdf where you can see the pumps guts. I think the bearing that contacts the "plungers" has fallen apart or was never there.. 😂 which in turn causes a pressure problem.

Anyone know the bearing size?

The next joy you are going to have is getting it out of the car
It is possible you can take it out the top but it is difficult

Originally Posted by djam1

The next joy you are going to have is getting it out of the car
It is possible you can take it out the top but it is difficult

Are you talking about the motor of the entire unit? I might leave it until next week when I have more time if thats the case! How many hours on the spanners? I guessed like 2 to get it off and back on with a new pump.

Also found a S/H D2 unit for $330, is that a decent price? According to this post Land Rover Defender TD5 ABS Modulator | LandyZone - Land Rover Forum you can just fit it straight to the defender even thought the ports are miss matched. OP reports back a year later with the all clear since the mod.

Would take me a lot longer than 2 hours maybe you are just quicker than me

Originally Posted by djam1

Would take me a lot longer than 2 hours maybe you are just quicker than me

I'm not expert or speed demon, I like a good job and try not to rush anything. What would you expect the job to take? I might am probably miss estimating the job!

It would take me 3 or 4 to get it out and make the repair but I am a bit slow

Originally Posted by benrover

I'm not expert or speed demon, I like a good job and try not to rush anything. What would you expect the job to take? I might am probably miss estimating the job!