Traction Fault

merlinpjl · May 18, 2014

The message centre says I have and ABS Fault and a Traction Fault.

I connected up my Nanocom and in the faults it says that the front left sensor has shorted more than once?

On the inputs, both front sensors are reporting 2.37v when stationary, and the voltage fluctuates as I drive forward.

The rear left sensor is slightly lower than the fronts , but the rear right says 0v and doesn't change when I move the vehicle.

Now I suppose it could be the sensor, but I could do with knowing where the ABS ECU is located so that I can check connections etc...

Any common faults or is it going to be the sensor?

Datatek · May 18, 2014

ECU is under the dash passenger side I think. ECU failure is not uncommon.

merlinpjl · May 18, 2014

Datatek, do I need to remove the glovebox, or is it lower than that?

Datatek · May 18, 2014

merlinpjl said:
Datatek, do I need to remove the glovebox, or is it lower than that?

Not sure, never had to do it

Saint.V8 · May 18, 2014

Thought ABS ECU was under the passenger seat...or is that Classics only!

brianp38dse · May 18, 2014

hi the ecu is above the panel with obd2 socket in above passenger foot well easyer to remove than glove box but is a bit off a fiddle to get clips out (well it is a range rover is any thing easy) hope this helps.

merlinpjl · May 19, 2014

To save time with the Rave, does anyone know if the sensors are wired directly to the ABS ECU?
Pins.

wammers · May 19, 2014

merlinpjl said:
To save time with the Rave, does anyone know if the sensors are wired directly to the ABS ECU?
Pins.

Yes they are, look at RAVE for pins this is not a butler service.

merlinpjl · May 20, 2014

I managed to pick up a second hand ABS ECU for £20 on eBay and a set of 4 ABS Sensors for £40. Going to have a look at the problem next week when I have a few days off, should have all the bits that I need there. I'll let you know what the outcome is.

merlinpjl · May 31, 2014

ABS ECU was the wrong type! it seems there are two versions - ordered the correct one now.

I have replaced all of the ABS sensors and am still getting the same errors.

The rear right sensor isn't registering a voltage on my Nanocom, but when I drive forwards, the sensor is generating a speed signal!!
The front left shows the correct voltage but no speed signal when moving.
As the sensors are new, and they go directly to the ECU, it can only be the ECU.

Should be here midweek, I'll post the outcome.

merlinpjl · Jun 4, 2014

I have replaced the ABS ECU now, and the wheel sensors are all registering a voltage and a wheel speed when moving.

However, the front left sensor is still registering a fault - shorting at least 6 time according to Nanocom.

I'm going to swap the front left sensor again this weekend to rule that out - any ideas?

I also noticed that the new ABS ECU has the vehicle VIN no of the car it came off when I look at settings on the Naoncom. There is an option to change it, so I type in the correct one, hit "Write" and I keep getting an error "Communication Error" Does the VIN matter?

Datatek · Jun 4, 2014

merlinpjl said:
I have replaced the ABS ECU now, and the wheel sensors are all registering a voltage and a wheel speed when moving.

However, the front left sensor is still registering a fault - shorting at least 6 time according to Nanocom.

I'm going to swap the front left sensor again this weekend to rule that out - any ideas?

I also noticed that the new ABS ECU has the vehicle VIN no of the car it came off when I look at settings on the Naoncom. There is an option to change it, so I type in the correct one, hit "Write" and I keep getting an error "Communication Error" Does the VIN matter?

Ignore the VIN.
Most sensor faults seem to be down to ECU faults sadly. worth checking that the wiring is not chaffed.

24Carrot · Jun 4, 2014

I have the same message. I hD it pug in to a landrover dealer and it sade there wae a Erth fault .can you tell me wear the abs erth is

Datatek · Jun 4, 2014

24Carrot said:
I have the same message. I hD it pug in to a landrover dealer and it sade there wae a Erth fault .can you tell me wear the abs erth is

Check it out in RAVE. I take it you are not in the UK?

24Carrot · Jun 4, 2014

Yes I am

24Carrot · Jun 4, 2014

Can u give me a link to rave?

Stufer · Jun 4, 2014

24Carrot said:
Can u give me a link to rave?

land rover service factory manual RAVE download land rover resource, service manual, workshop factory manual, download, rave, vehicles including discovery, series, defender, range rover, freelander, LR3, Handbooks, Catalog, Catalogue, Land Rover Inte

24Carrot · Jun 4, 2014

Thanks

merlinpjl · Jun 14, 2014

merlinpjl said:
I have replaced the ABS ECU now, and the wheel sensors are all registering a voltage and a wheel speed when moving.

However, the front left sensor is still registering a fault - shorting at least 6 time according to Nanocom.

I'm going to swap the front left sensor again this weekend to rule that out - any ideas?

I also noticed that the new ABS ECU has the vehicle VIN no of the car it came off when I look at settings on the Naoncom. There is an option to change it, so I type in the correct one, hit "Write" and I keep getting an error "Communication Error" Does the VIN matter?

OK, - Update
I replaced the front left sensor this morning, hooked up my Nanocom, cleared the faults and went for a drive. No faults, beeps or errors, all back to normal now.

Datatek · Jun 14, 2014

merlinpjl said:
OK, - Update
I replaced the front left sensor this morning, hooked up my Nanocom, cleared the faults and went for a drive. No faults, beeps or errors, all back to normal now.

Good news

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