Thread: SLS.

Originally Posted by V8Ian

I tried that with the Nanocom, the car didn't lift at all, despite four or five tries. Does this confirm that the compressor is kaput?

If it kicked in on requeast and no pressure to the bag it's very likely that the pump is worn, that's why they sold so much kits like this Landrover Discovery 2 Air Suspension Compressor WABCO Pump Repair Kit Rqg100041 for sale online | eBay

Originally Posted by V8Ian

I tried that with the Nanocom, the car didn't lift at all, despite four or five tries. Does this confirm that the compressor is kaput?

I would check to see if the relay is switching first. This is only to save getting under the car, when it may be something else!

As you have the Nanocom, with bonnet open and using the Nanocom to activate the SLS(ie. compressor) Relay R5 should click even if compressor is kaput.

You reckon you checked the fuse .. in the engine bay fuse box? This should be fine as it powers up a few other functions too(like ABS and SLABS)

If you hear the click(or you may have to feel it, if engine is running) of the relay, I would then suggest you check the connector under the (engine) fuse box from the relay .. again, just to be sure power is going to the (possibly kaput) compressor.
This connector/wire is easy to spot. Should be a single connector under the fusebox, with nice thick white and black(tracer) wire going down to the compressor.

As I remember using the nanocom you should be able to activate compressor without the engine running ie. to keep things quiet to hear the relay click.

Now, assuming that the black and white wire to the compressor is getting it's power to the compressor, one last thing to check before condemning the compressor to 'kaputness' will be down at the compressor plug. Twin wire plug, white and black as said before, and the black earth wire .. make sure the earth is connected to earth(continuity or resistance test)
Could be a weak earth path or something, so high resistance and hence not getting enough power into compressor or something.

Hi,

based on my experience the brush holder corrodes, probably caused by river crossings and condensation. If the pump is kaput but the motor goes before spending money on kitting the pump, strip the electric motor off and remove the brush holder and check for corrosion. I've had two motors with corroded brush holders that have parted company with the metal plate thingy.

I think the motors are supposed to be sealed, but that just means any water that gets in can't get out.

cheers, james nz

Originally Posted by James NZ

.

I think the motors are supposed to be sealed, but that just means any water that gets in can't get out.

cheers, james nz

Never a truer word spoken, or written in this case.

I've established the compressor is running, yet to prove it is actually making pressure.

Originally Posted by sierrafery

Those are values related to heights as nanocom calculates them.

sensor value: This shows the current height value of the air suspensionheight sensor. A value of 1 is equal to approximately 1.4 mm between the wheel arch
and ground.

Go to Utility - Calibration, you can activate the compressor from there to raise each side, each start will work for about 1cm. Make sure all the doors are closed and do it with engine running then when all is even store heights... though check at lesst visually the height sensors first eventually disconnect the battery and give some contact spray in the plugs

The options are left or right and raise/lower. Does the raise/lower refer to the vehicle height or bag pressure?

Originally Posted by V8Ian

The options are left or right and raise/lower. Does the raise/lower refer to the vehicle height or bag pressure?

Same thing I would have thought

Originally Posted by pop058

Same thing I would have thought

Yeah, I realised that after I'd posted. I was trying to get the air out of the bag with the axle hanging.
I'm further leaning towards a defective sensor. Regardless of where I move the disconnected (from the trailing arm), I cannot inflate or deflate the bag. Even at full droop, there is too much pressure in the bag to remove it.
Is there a test for the sensor?