Help me identify this plug pleesee

Hello chaps, vehicle in question is a 300tdi manual Range rover classic 1995. Under the passenger seat is this plug, it wasn't plugged into anything when I acquired the vehicle and the engine and ABS seem to work fine in its current state. Can someone tell me what this plug is for? my guess was an ECU plug or something ABS related? Seems weird because its a mechanical pump on the engine and has been from new I believe.

Is your vehicle air suspension?
I initially thought that was the petrol EFi ecu, but on reflection I think they're usually under the right hand seat and the air suspension ecu under the left.

Ratae said:

Is your vehicle air suspension?
I initially thought that was the petrol EFi ecu, but on reflection I think they're usually under the right hand seat and the air suspension ecu under the left.

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Coil sprung

Coils originally or converted from air?
Quick look on Lrcat the connectors appear much the same.
Lrcat

Ratae said:

Coils originally or converted from air?
Quick look on Lrcat the connectors appear much the same.
Lrcat

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I couldn't say for sure, it's entirley possible it was air suspension out of the factory. The vehicle has had a replacement chassis and who knows what else dione to it in the past.

Sebrof said:

The vehicle has had a replacement chassis

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I wonder why, presumably due to extensive corrosion but that's unusual on a Classic (the chassis I mean, not the car as a whole )
nb: '95 (last full year of production) would have air from the factory.

norseman said:

I wonder why, presumably due to extensive corrosion but that's unusual on a Classic (the chassis I mean, not the car as a whole )
nb: '95 (last full year of production) would have air from the factory.

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Supposedly the steel on the RRC chassis was different from the def/disco ones and had better corrosion resistance? the bodys on the other hand...

Its the ABS ecu connector.

EAS ECU is located under the drivers seat..

Henry_b said:

Its the ABS ecu connector.

EAS ECU is located under the drivers seat..

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Why on earth would ABS need an ecu and also presumably it isn't necessary for it to function?

Sebrof said:

Why on earth would ABS need an ecu and also presumably it isn't necessary for it to function?

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It's very necessary in a nutshell it takes information from the ABS sensors on each of the hubs to prevent the wheels locking up when under hard braking.

Henry_b said:

It's very necessary in a nutshell it takes information from the ABS sensors on each of the hubs to prevent the wheels locking up when under hard braking.

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Ah I thought I felt the abs working on the short run up the driveway, maybe that was just the wheel bearings shaking I reckon it'll be easiest removing abs system only good for lighting up the dash anyway.

Does the abs light come on the dash? That can be faked though.. test the abs somewhere safe and find out

Sebrof said:

Supposedly the steel on the RRC chassis was different from the def/disco ones and had better corrosion resistance? the bodys on the other hand...

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Although LR never officially 'commented' on the subject, there remains a strong belief that from the intro. of the Disco 1 in 1989 steel quality used in both models declined. The Disco 1 was infamous for chassis corrosion & the later Classics (built alongside) seem to suffer accordingly.

This plug is beneath the passenger seat?
Reckon is EAS sensors

Sebrof said:

Ah I thought I felt the abs working on the short run up the driveway, maybe that was just the wheel bearings shaking I reckon it'll be easiest removing abs system only good for lighting up the dash anyway.

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The MOT man might well disagree with your thinking
If ABS was a factory spec ...

norseman said:

The MOT man might well disagree with your thinking
If ABS was a factory spec ...

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shouldn't think he'd mind if I just remove all trace of it and put in a brake bias valve, can't imagine it will be a MOT failure as long as the brakes are in good order and don't leak fluid.

Tw@t

Sebrof said:

shouldn't think he'd mind if I just remove all trace of it and put in a brake bias valve, can't imagine it will be a MOT failure as long as the brakes are in good order and don't leak fluid.

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If the original spec includes ABS, it has to be present.

"You must inspect any ABS systems fitted.

When testing ABS equipped vehicles, the road wheels that are lifted off the ground should not be allowed to rotate when the ignition is on. This can cause the ABS system to indicate a fault which may require specialist equipment to rectify.

If the ABS has been intentionally rendered inoperative, the whole system must be removed. This does not apply to sensor rings or other ABS components which are an integral part of another component, such as a brake disc or drive shaft.

It’s not permissible to remove or disable the ABS from a vehicle first used on or after 1 January 2010. Not all vehicles first used on or after 1 January 2010 will have ABS, so the failure only applies where the system has obviously been removed."
www.gov.uk/guidance/mot-inspection-manual-for-private-passenger-and-light-commercial-vehicles/1-brakes Section 1.6

Ratae said:

"You must inspect any ABS systems fitted.

When testing ABS equipped vehicles, the road wheels that are lifted off the ground should not be allowed to rotate when the ignition is on. This can cause the ABS system to indicate a fault which may require specialist equipment to rectify.

If the ABS has been intentionally rendered inoperative, the whole system must be removed. This does not apply to sensor rings or other ABS components which are an integral part of another component, such as a brake disc or drive shaft.

It’s not permissible to remove or disable the ABS from a vehicle first used on or after 1 January 2010. Not all vehicles first used on or after 1 January 2010 will have ABS, so the failure only applies where the system has obviously been removed."
www.gov.uk/guidance/mot-inspection-manual-for-private-passenger-and-light-commercial-vehicles/1-brakes Section 1.6

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Thanks for clearing that up. Yeh so It's not an issue as long as the whole system is removed and replaced with a safe alternative.