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Author Topic: Tech 2  (Read 3293 times)

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MikeV6

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Tech 2
« on: 16 March 2023, 15:37:33 »

Hi is there anyone near Wigan/Warrington ways with Tech to that could plug my car in ?

Omega 3.2 V6 Special
 
I have the TC and car with span light on
speed works fine
I've been told by the last owner that the traction control had been disabled

At the moment off the snap on scanner I'm getting

P0500 Vehicle speed sensor
P0500 Vehicle speed sensor
P0571 cruise/brake switch A circuit malfunction

I've changed the brake switch thinking it might be that but no at a blank on what else it could be.

Any help would be great thanks
Mike
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Re: Tech 2
« Reply #1 on: 16 March 2023, 15:57:42 »

Two separate issues.

Pedal trick will tell you what the spanner light is on for.

The TC light is probably a sticky switch or a short behind the TC plug in the centre dash.

It’s not an ABS fault. If it was the ABS light would be on as well :y
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MikeV6

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Re: Tech 2
« Reply #2 on: 16 March 2023, 16:08:55 »

Two separate issues.

Pedal trick will tell you what the spanner light is on for.

The TC light is probably a sticky switch or a short behind the TC plug in the centre dash.

It’s not an ABS fault. If it was the ABS light would be on as well :y

Thanks what is the Pedal trick ?
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STEMO

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Re: Tech 2
« Reply #3 on: 16 March 2023, 16:36:53 »

Two separate issues.

Pedal trick will tell you what the spanner light is on for.

The TC light is probably a sticky switch or a short behind the TC plug in the centre dash.

It’s not an ABS fault. If it was the ABS light would be on as well :y

Thanks what is the Pedal trick ?
https://www.omegaowners.com/forum/index.php?topic=90581.0
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MikeV6

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Re: Tech 2
« Reply #4 on: 17 March 2023, 09:56:39 »

Will the car need to be driven or should the code clear ones the new brake switch is installed ? reason i say that sins fitting the new brake switch i haven't driven it but the lights still on

I checked the TC switch last night and it all looks good

Thanks
Mike
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Re: Tech 2
« Reply #5 on: 17 March 2023, 10:23:21 »

Brake switch isn't the problem.

When you say that you have checked the switch and it looks OK, what do you mean?

The switch requires testing electrically and the wires behind it need to be checked for breaks/damage.
« Last Edit: 17 March 2023, 10:28:29 by Doctor Gollum »
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TheBoy

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Re: Tech 2
« Reply #6 on: 17 March 2023, 12:12:58 »

Were the snap-off codes from the ABS, or engine?

Speed sensor codes would look suspicious to me, potentially indicating either the ABS ECU failing, or possibly a wheel sensor fault.  IME, if the ABS ECU responds to diagnostics, the ECU is OK.  If it doesn't, it tends to be the common ABS ECU failure.
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Re: Tech 2
« Reply #7 on: 17 March 2023, 17:33:08 »

Were the snap-off codes from the ABS, or engine?

Speed sensor codes would look suspicious to me, potentially indicating either the ABS ECU failing, or possibly a wheel sensor fault.  IME, if the ABS ECU responds to diagnostics, the ECU is OK.  If it doesn't, it tends to be the common ABS ECU failure.
But no ABS light. Which points to the TC circuit or switch.
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Re: Tech 2
« Reply #8 on: 18 March 2023, 09:20:19 »

Were the snap-off codes from the ABS, or engine?

Speed sensor codes would look suspicious to me, potentially indicating either the ABS ECU failing, or possibly a wheel sensor fault.  IME, if the ABS ECU responds to diagnostics, the ECU is OK.  If it doesn't, it tends to be the common ABS ECU failure.
But no ABS light. Which points to the TC circuit or switch.
Not really....
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MikeV6

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Re: Tech 2
« Reply #9 on: 20 March 2023, 11:49:10 »

I did the pedal trick and the light flashed code 2100 canbus malfunction
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Re: Tech 2
« Reply #10 on: 20 March 2023, 14:00:55 »

Which was kinda expected if the ABS module is playing up.

Unfortunately, I think the next step is to get the ABS ECU read...
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Re: Tech 2
« Reply #11 on: 20 March 2023, 19:42:28 »

Lots of ex cars had the TC disabled for AIW, basically they just cut a sensor wire,or just disconnected abs sensor,, some had a switch, or pulled a fuse.

If it's the abs ECU/or pump, I've got one
« Last Edit: 20 March 2023, 19:44:03 by biggriffin »
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MikeV6

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Re: Tech 2
« Reply #12 on: 21 March 2023, 11:55:41 »

Lots of ex cars had the TC disabled for AIW, basically they just cut a sensor wire,or just disconnected abs sensor,, some had a switch, or pulled a fuse.

If it's the abs ECU/or pump, I've got one

I was told by the last owner that the TC was disabled and the TC light only came on when out in the car in bad weather  ;D that old chestnut  ::)

I have a spare 3.2 pump & ecu but that looks a pain of a job to do.

When i had the centre part of the dash out i did notice the wires to the TC had been cut off.

Thanks
Mike

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Re: Tech 2
« Reply #13 on: 21 March 2023, 13:08:16 »

The switch is a non latching PTM if memory serves, so cutting wires to it will not disable it on its own.
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Re: Tech 2
« Reply #14 on: 21 March 2023, 16:38:40 »

The switch is a non latching PTM if memory serves, so cutting wires to it will not disable it on its own.
Well they would if there's no signal getting through... Unless it's Bluetooth ;D

And actually the previous owner was correct. On my TVP 3.2 manual estate, the ABS and TC hardly every activated unless you were driving like an absolute Khant. In the snow.

And as an ex Accident Investigation Unit that left TVP with the ABS fitted with a switch to disable it. ;)

Whether they did similar with the unmarked saloons, who knows, but cut wires are where you need to be starting.
« Last Edit: 21 March 2023, 16:42:35 by Doctor Gollum »
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Re: Tech 2
« Reply #15 on: 22 March 2023, 11:20:55 »

Well they would if there's no signal getting through... Unless it's Bluetooth ;D
Incorrect.  The switch just toggles between modes, it does not define which mode it is in.

And actually the previous owner was correct. On my TVP 3.2 manual estate, the ABS and TC hardly every activated unless you were driving like an absolute Khant. In the snow.
That would be programming within the unit, not cut wires.  Cutting wires cannot adjust it's sensitivity

And as an ex Accident Investigation Unit that left TVP with the ABS fitted with a switch to disable it. ;)
That is most likely done, knowing one of the guys who "designs" the modifications for TVP, probably by interrupting the signals to one of the wheel sensors.  This will bring on the ABS light.
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Re: Tech 2
« Reply #16 on: 22 March 2023, 13:43:12 »

Well they would if there's no signal getting through... Unless it's Bluetooth ;D
Incorrect.  The switch just toggles between modes, it does not define which mode it is in.
Surely the setting will be whatever was selected when the wire was cut. And if the wire ends are touching(possibly via the radio cage), then it could keep ithe TC switched off  :-\
And actually the previous owner was correct. On my TVP 3.2 manual estate, the ABS and TC hardly every activated unless you were driving like an absolute Khant. In the snow.
That would be programming within the unit, not cut wires.  Cutting wires cannot adjust it's sensitivity
That was based on 165k of experience with my estate, nothing to do with the wiring. I hardly ever saw the TC light come on or felt it activate.
And as an ex Accident Investigation Unit that left TVP with the ABS fitted with a switch to disable it. ;)
That is most likely done, knowing one of the guys who "designs" the modifications for TVP, probably by interrupting the signals to one of the wheel sensors.  This will bring on the ABS light.
On my estate, the ABS light appeared just prior to its second taxi inspection. Turned out to be a damaged wire from previous electrical work before I purchased it. They had cut the loom in the dash and run an extension into the column. This extension had failed when the removed the retrofitted switch on the column.
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Re: Tech 2
« Reply #17 on: 22 March 2023, 15:13:43 »

Out of curiosity, why would the AIW officers want to permanently disable TC when there was a perfectly good switch available to disable it when required?
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Re: Tech 2
« Reply #18 on: 22 March 2023, 16:01:18 »

Out of curiosity, why would the AIW officers want to permanently disable TC when there was a perfectly good switch available to disable it when required?
ABS. To enable a benchmark skid to be established at a scene as part of the investigation process.

TC being disabled by itself is indication of a fault. Not that a 3.2 with LSD needs TC...
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Re: Tech 2
« Reply #19 on: 22 March 2023, 18:49:36 »

Not that a 3.2 with LSD needs TC...
Probably not an auto unless its wet or icy, but the manuals are quite easy to make a mess off if you dump the clutch.
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Re: Tech 2
« Reply #20 on: 23 March 2023, 10:46:18 »

Not that a 3.2 with LSD needs TC...
Probably not an auto unless its wet or icy, but the manuals are quite easy to make a mess off if you dump the clutch.
Not in my experience  ;)
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Re: Tech 2
« Reply #21 on: 23 March 2023, 11:50:45 »

Not that a 3.2 with LSD needs TC...
Probably not an auto unless its wet or icy, but the manuals are quite easy to make a mess off if you dump the clutch.
Not in my experience  ;)
You need to learn to try harder ;D
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Re: Tech 2
« Reply #22 on: 23 March 2023, 17:40:42 »

Not that a 3.2 with LSD needs TC...
Probably not an auto unless its wet or icy, but the manuals are quite easy to make a mess off if you dump the clutch.
Not in my experience  ;)
You need to learn to try harder ;D
That car wasn't exactly molycoddled ;D

165k miles in 6 years, over two thirds of which as a taxi >:D
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MikeV6

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Re: Tech 2
« Reply #23 on: 11 April 2023, 16:11:24 »

Up Date

Had the car to a Vaux Specialist to have the Tech 2 plugged in

Outcome no communication to ABS ECU.

Replaced ABS ECU with a working one out of one I'm breaking and still the same  >:(

What i do need to do is get the car back in the ramps and check ABS rings are ok which i should of probably done before going so far as changing ECU ::)
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Re: Tech 2
« Reply #24 on: 11 April 2023, 16:59:45 »

No comms to ABS ECU is either an ABS ECU failure(usually the most likely cause) or the wiring between the digs port and said ECU, or potentially a wiring issue on the CAN between the ABS, Engine and transmission.
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Re: Tech 2
« Reply #25 on: 11 April 2023, 17:02:55 »

Was the ECU from the breaker the same hardware and same config?  (Config in this case is engine, ie 2.5/3.0 or a 2.6/3.2). Although I'd still expect it to be diagnosable, even if the config was wrong, as long as the h/w was the correct one.
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MikeV6

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Re: Tech 2
« Reply #26 on: 12 April 2023, 09:49:38 »

Yes the ECU was from another 3.2 I'm breaking
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Re: Tech 2
« Reply #27 on: 12 April 2023, 15:15:22 »

Can you pop one of those ECUs in the breaker, connect a battery, and then see if thats diagnosable?  Assuming you have any equipment capable of diagnosis?

That would prove ECUs faulty or loom faulty.

Raking my brains what else it could be.  Fuses, but assumed you'd checked them (multiple fuses power the ABS).  I don't think its sensor/reluctor etc related, as ECU would still be diagnosable.
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Re: Tech 2
« Reply #28 on: 13 April 2023, 11:05:50 »

I'm thinking about sending my original ECU away to be tested its about £100 so ill do that see what the outcome is, wiring isn't my thing so if that's the case ill have to get somebody to look at it  :(

Still need to check the ABS rings that ill do this weekend if I get chance.



 
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Re: Tech 2
« Reply #29 on: 13 April 2023, 17:22:42 »

as mentioned (worth checking if you like ) but no communication at all wont register any faults at all further down the line as it cant see them so the idea of just plugging it back into your other car makes more sense. doesnt need to be fitted as such,.if both ecu's work and communicate in the other car then theiroretically you  have the repair piece in front of you . ie possibly something in the wiring or connectors.
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