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Messages - LC0112G

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46
Both the frequency AND amplitude of the sensor output will increase with RPM. You say you are measuring at 2 RPM. Assuming you're using 235R45x17 tyres, the rolling circumference is 79.57 inches (2021mm). 2 RPM is 120 revs per hour, which is therefore 9548 inches per hour, which is only 0.15 miles per hour.

I don't think the ABS is supposed to work at all below 5mph. Therefore the voltages you are seeing from the sensors are not representative of what you should see if the car is travelling at > 5MPH (8 Km/h).

Your 50mV at 2RPM might be correct - Try it again at a more realistic 200RPM (15 MPH), you should get a much larger signal - probably 20-50 times larger. Remember the ABS needs to work all the way up to above top speed (say 2000RPM/150MPH) so the signal can be massive at that speed. If you adjusts the sensors to give large signals at very low speeds, then at normal/high speed you can overload the ABS inputs.

I've got some old Carlton hubs in the lockup, still with the ABS sensors fitted. I'll dig them out tomorrow and measure them up for clearance. 0.2-0.3mm sounds way too close to me.

47
Sounds to me like the wrong sensors. EPC doesn't show the OEM part number, but most braking stuff on large Vauxhall/Opels is Bosch. Certainly is Bosch on Carlton/Senator.

I've never heard of Holstein (except as a cheap Beer here in the UK, and as a state in Germany)

48
I've only played with Carlton/Senator ABS, not Omega B, and it might be different - but.....

There is no ground on the sensors. The two sensor wires are differential all the way to the control unit. Infact the resistance to ground of both terminals is many hundreds of K-ohms. If either terminal is somehow shorted to ground, the ABS fault light comes on.

As I say - on the Carlton/Senator.

Thank you! That is valuable information.

I have measured the resistance of the terminals to 6.8M Ohm on both sides, and I assume that reading is OK.

Yes, that sounds about right.

The sensors are called variable reluctance sensor. Their output signal amplitude is a function of both RPM and clearance. You seem to be saying that by rotating the sensor things get better/worse. Note that the clearance is important - if the sensor is too close to the reluctor ring then it'll generate too high voltage, and this can upset the control unit. Rotating the sensor will reduce the amplitude as the 'blade' of the sensor becomes mis-aligned with the teeth on the reluctor ring..

So check the clearance between the tip of the sensor and the reluctor ring on the wheel bearing. I don't know what it is supposed to be, but I'd expect something like 1mm-2mm. You say up thread that it is (almost?) touching. That isn't correct. If it is, then the sensors are wrong but you might be able to correct it by putting shims in between the sensor and the steering knuckle.

49
I've only played with Carlton/Senator ABS, not Omega B, and it might be different - but.....

There is no ground on the sensors. The two sensor wires are differential all the way to the control unit. Infact the resistance to ground of both terminals is many hundreds of K-ohms. If either terminal is somehow shorted to ground, the ABS fault light comes on.

As I say - on the Carlton/Senator.

50
General Discussion Area / Re: Stemoshire.
« on: 22 October 2023, 22:50:02 »
It seems things can escape from beyond the event horizon that is Barnsley, My parcel is now marked as delivered, on Saturday at 11:54AM, to a buisness address that will have been unmanned at the time. I wonder what state the thing will be in though.

51
General Discussion Area / Re: VOIP suggestions
« on: 20 October 2023, 16:16:41 »
my landline and my mum's works without power in the house (depends on the type of phone you have )

Yes, analogue land lines work because they are powered by DC coming down the copper phone lines from the exchange. So providing the exchange has power, existing analogue phones still work if you have a local power cut.

if BT have a power cut ,it's unlikely to be on  the same grid 

What BT are doing down our way is putting electronics at the top of all the telephone poles ready to force us all onto VoIP. I asked the engineers about it whilst they were doing it - they said it's powered off the local 240V grid. If the local 240V grid goes down (aka a power cut) then the electronics at the top of the pole will stop working, and we'll lose our phones even if we have home battery backup. Nothing to do with the exchange having power or not.

GSM based devices (with a sim card)  are also available ,

Yes, but they aren't being given out by the elderly home care companies (yet).

52
General Discussion Area / Re: What has P*ssed you off today?
« on: 20 October 2023, 14:59:02 »
Hermes.

Been waiting from a couple of seals from Rock Auto since October 10th. Chose DHL for delivery option. Once in the UK, DHL have given the package to Hermes, who tried to deliver it on Oct 18th, to a Buisness address, at 06:08PM. Of course there is no-one here at that time, and despite it only being 0.098lbs, did they put it through the letter box. Did they bollaux. So it goes back to the Avonmouth depot. Left Avonmouth on 19th heading to ... Barnsley, where it arrived at 11:53. Latest tracking shows it is now at the Barnsley Delivery terminal at 12am on October 20th.

The effin thing is getting further away!

53
General Discussion Area / Re: VOIP suggestions
« on: 20 October 2023, 12:49:00 »
Contract free ,set the numbers it calls ,and has back up batteries . ;)
Clicky  SureSafe Personal Alarm
plenty of similar devices about too
Panic Distress Intruder Alarm cheapo    :-\
obviously ,the new-fangled router thingy will need UPS

Neither of which will work during a power cut. Doesn't matter if these devices have battery backup - the BT side of things does not.

54
General Discussion Area / Re: VOIP suggestions
« on: 20 October 2023, 11:41:18 »

BT will move you to a VOIP

Does this mean new equipment like phones and incoming sockets etc  the reason I ask is that I was thinking of having mine moved and with VOIP bering talked about then maybe wangle something on the cheap ::)

No, basically a new broadband hub / router that your phone plugs into.  phone network becomes a pure data network at the exchange level so phones will no longer work in an ordinary socket.  nothing to do with fibre, thats just a better way of getting that data network to your house.

And nor will they work during a power cut. Work of the devil if you ask me.

Indeed, thats causing a bit of a stir, are some backup battery options apparently

My mum had, and my nextdoor neighbour has, one of those local govt supplied 'panic' alarms - which are basically big red buttons that they hang round their necks and press if they have a fall or somehow become immobilised and need help. These won't work in a power cut. AIUI even if you've got local battery backup they still won't work, because the electronics in the BT cabinates relies on grid power. Your end might be Ok, but their end will be down. 

55
General Discussion Area / Re: VOIP suggestions
« on: 20 October 2023, 10:03:07 »

BT will move you to a VOIP

Does this mean new equipment like phones and incoming sockets etc  the reason I ask is that I was thinking of having mine moved and with VOIP bering talked about then maybe wangle something on the cheap ::)

No, basically a new broadband hub / router that your phone plugs into.  phone network becomes a pure data network at the exchange level so phones will no longer work in an ordinary socket.  nothing to do with fibre, thats just a better way of getting that data network to your house.

And nor will they work during a power cut. Work of the devil if you ask me.

56
Thing is, fuses usually go pop for a reason, particularly ones that are 20 years old. If it goes again in the near future then you probably do have some other problem.

57
That rings a bell. Also the rear aux. socket isnt working either and that runs off a timer. Drivers seat adjustment doesnt though.

I think the aux socket is X68, which runs off relay K154, both of which are on lines 1344-1345. The relay is turned on/off by the CSR (K153 lines 1327-1340). Again, that points to fuses F29 and/or F7. If it's not them, then the CSR itself. Dunno where that lives though- it's not a simple relay - it has at least 9 terminals.

58
Does the passenger electric seat stuff work? Up down, back, forwards etc. Looks like the passenger seat isn't a "memory" seat (lines 3844-3849 on the circuit), and it's only fed from fuse F5. If the passenger seats work, then it's not related to F5.

The memory seat is lines 3800-3842 on the circuit diagram. Fuses involved are F5, F12 and F15. If F15 blows you lose the dashboard instruments - all of them - speedo, rev counter, fuel gauge etc. Since you've not reported that, then we can assume F15 is OK. The memory seat ECU is connected to the diagnostics, so Tech1/2 might (but probably won't!) give you some clues.

So F12. That seems to supply a shedload of stuff, including CID/MID/GID, alarm, and about 20 other things. I suspect you'd notice if they weren't working.

The light switch is S2, on lines 422-449. Does the light in the light switch itself illuminate?

The sunblind lamps are lines 1318-1323. These are driven from the light switch (S2).

The reading lights are E27 and E28 on lines 1220-1247. The consumer delay unit (CSR) is K153 on lines 1327-1340. The consumer delay unit uses fuses F29 and F7.

There is a link between the CSR and the electric seats - traces 1207[TKS], 1306[CSR], 3804[MEM]

So on balance, I'd agree you need to be looking at the CSR - specifically fuses F29 and F7.

59
General Discussion Area / Re: Israel
« on: 17 October 2023, 20:46:19 »
The Spanish Airforce have F16s based in Gran Canaria. Not a massive stretch to think that the Portuguese do something similar. All NATO partners and all that... ;)

The Spanish don't operate F-16', but they do have F-18's at Gando in Gran Canaria. Nothing at Lajes in the Azores though, coz that's a Portugese territory.

The Portugese do operate F-16's (although they've flogged half of them to Romania), but they are all based north of Lisbon at Monte Real - only a few Search and Rescue types based at Lajes. However, it was a big USAF/NATO staging post over the Atlantic quite until recently, and still gets a lot of transient traffic.

60
General Discussion Area / Re: Israel
« on: 17 October 2023, 18:27:04 »
Bit of digging - on 3rd October around 10pm it was callsign "Canforce 2514", C-130J tail number 130614, and yes it came in from Lajes and landed at Waddington. Don't know why it came in that way, but if it was carrying spares for the dead F-18 it's possible it didn't start out from Canada - it could have come from one of the logistics bases in the USA where the spares are stored.

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