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Author Topic: Tech 2  (Read 3291 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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Doctor Gollum

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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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Doctor Gollum

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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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TheBoy

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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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TheBoy

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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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TheBoy

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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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Doctor Gollum

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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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