Thread: amusing in retrospect 3 amigos cause

Phillip these problems can be a pain I chased them for 2 years and eventually got rid of them.
Plenty of Land Rovers who do sharp right turns that don't have the issue so I suspect you have an issue there somewhere.
Might be time to get some more sensors I found Paddocks to be the best source of reasonably priced ones.

thats a culmination of many small things adding up to an error.

if you dont get a fault when you start up and drive off in a straight line but you do when you start up and drive off round a hard turn then most likely you have a contaminated sensor or a sensor with a suspect connection/shielding. (sometimes both)

when you take off on the straight theres enough signal for the computer to work out whats going on.

when you take off on a corner the signal is too far out of "sync" for the computer to work out whats going on so it throws up a fault.

The short term bandaid is to always park in a position where you can drive off in a straight line untill you get up enough speed for the system to calibrate.

the long term fix is to find the root cause and fix the problem not the symptom.

I had a look at Nanocom SLABS inputs today and the sensors read as follows.

RF 2.19
LF 2.19
LR 2.19-2.21
RR 2.17
I undid the connector near the fuel filter and it looked clean, although I sprayed it with contact cleaner to be sure.
Result 2.17

I assume that this is return volts to the SLABS ECU from the sensors with output voltage of 4.85 or so.

This to me seems a small difference, but could be the cause of the intermittent fault report.
There are currently no faults on the SLABS.
Is it worth buying a new sensor at this stage or just watch and monitor?
Regards Philip A

G'day PhilipA,

My D2 tends to light up the 3 amigos whenever it suits.

Stationary when parked or sitting at the lights, sometimes at the same point in a road traveled regularly.

I am getting the impression it maybe an earth issue in the module. I presume there are many posts on this subject however due to my laziness I will still ask, has anyone actually bridged the earthing issue in the ABS module, if so any success?

My usual mechanic (Landy specialist) frowns at this option and as yet I have yet to resolve my sombrero toting issue. There doesnt seem to be anything wrong with the sensors.

Cheers

Smeg

Originally Posted by Smeg

G'day PhilipA,

My D2 tends to light up the 3 amigos whenever it suits.

Stationary when parked or sitting at the lights, sometimes at the same point in a road traveled regularly.

I am getting the impression it maybe an earth issue in the module. I presume there are many posts on this subject however due to my laziness I will still ask, has anyone actually bridged the earthing issue in the ABS module, if so any success?

My usual mechanic (Landy specialist) frowns at this option and as yet I have yet to resolve my sombrero toting issue. There doesnt seem to be anything wrong with the sensors.

Cheers

Smeg

I had the same intermittent problem, pushed in the wires firmly on the connector on the ABS block, especially the yellow green wire - no 3 Amigoes for over a year or two now. (ie can't remember when they last visited). Lots of other reasons why they come, such as CANBus issues, through to legit issues such as sensors, leaking brake fluid on the resistors etc.

I got amigos, nanocom said LF intermittend,sometimes low output, sometimes electrical failure.After doing all the usual tests (all checked out good) I swapped both front wheel sensors.The fault stayed with the sensor so I ordered a new one (cheapest on e-bay from U.K.) The picture showed a long lead one which I wanted,as the connector on the lead that goes to the SLABS was broken.(I put in a screw-connector so I could keep playing with it).I got a short lead with plug instead. From a previous post I was alerted to check the length of the sensor. The old one was 18.4mm long, the new one was 19.4mm long.By that time I could not send it back since I had the plug cut off, and i was cheap enough. Then I measured for air-gap. The depth of the hole was 18.7mm, so the old sensor had an air-gap of 0.3mm. With a dial-indicator and a long lever I could not detect any play in the hub.
By bending the bracket on the new sensor careful I could set it so I just could not feel the teeth of the tooth-wheel.Put it all together and had not had a single amigos-issue in about a month, and that is with a solder-joint and a screw-connector.
Before I removed the "bad" sensor I did a "jack-up-speedo-test" and it passed, and resistance is good as well.So at the moment I think air-gap is crucial, even though I can't see how that would change except from play in the hub.
After I wrote the vendor about the wrong length he refunded total cost without wanting it back.

Originally Posted by PhilipA

I had a look at Nanocom SLABS inputs today and the sensors read as follows.

RF 2.19
LF 2.19
LR 2.19-2.21
RR 2.17
I undid the connector near the fuel filter and it looked clean, although I sprayed it with contact cleaner to be sure.
Result 2.17

I assume that this is return volts to the SLABS ECU from the sensors with output voltage of 4.85 or so.

This to me seems a small difference, but could be the cause of the intermittent fault report.
There are currently no faults on the SLABS.
Is it worth buying a new sensor at this stage or just watch and monitor?
Regards Philip A

You also need to check the other half of the sensor - the ring that it reads. It has to be clean and if not will throw intermittent faults.

Try doing a circle in a car park in the opposite direction to see if the different wheel value moves to the other side of the vehicle.