Topic

Couple of questions about pscan:

I have fitted a new tank with sensor to my 2004 TF(LHD), which has the "radiator" warning lamp in the dash. I found out that my car is one of the few that had the wiring, the display, but would not work until a small code had been removed (I think this was to stop the warning light from self test on switch on, without the tank and sensor attached). Very few cars were afftected but mine was one of them. So can pscan remove this code?

Can pscan be used to re-code an old fob to my existing fob /ECU? Just having one fob makes me a little nervous.

I need to do these things myself because I live in the Czech Republic and have no access to any MG specialists.

Regards

Keith

Hi . To answer the question regarding the fob re coding , it depends on what type of SCU your car is fitted with . Does it have Lucas ( square fob ) or Pectron ( round fob ) ? I think with the Lucas system , Pscan will re code the fob ( although I have not tried this ) but the Pectron type will have to have the all important barcode that it had from the factory . If you have the round type fob you may need to speak to Paul Brown of Technozen as he is a wizard with all things relating to both systems .
The Pscan will erase the fault code in the EMS.

https://www.technozen-electronics.co.uk/

John

It sounds as though this is configuration rather than an error code. Does this car have the service indicator that only the MG factory tool (and pscan) can reset? In other words is it an LE500, TF135 or 85th Anniversary edition?

Thanks,

This car has the Pectron and the oval key fob. I know the earlier Lucas square fob was relatively easy to programme.

Thanks for the link, I'll try him, but it probably means I'll have to send the SCU to him.

Regards

Keith

Hi,

It's a TF 135 but I did read that a small batch of cars, about 275 of which mine is one, had the indicator and wiring fitted, but not the new type tank and sensor, and the warning light was disabled. From what I read this was done by the garage / distibutor so it must have been fairly simple.
The warning light doesn't do the short self test when the ignition is first turned on and the light doesn't come on if the fluid is low in the tank, I've done all these checks.
I know, I could just fit a buzzer connected to the tank sensor, dead simple wiring, but it's not the point, I've got the new tank, wiring connected, indicator in the dash......
My only other thought was to remove the dash and check to see if there was a connector that was disconnected.

Thanks

Keith

Hi, found it:

“Cars built after VIN 632424 should have had a low coolant sensor system installed, unfortunately there were supply problems with the redesigned header tank and sensor up to VIN 634868. Two problems may arise with this small batch of cars. Firstly, if the warning lamp illuminates for 4 seconds after the ignition is turned on, then the SCU coding is correct, but the sensor may be missing! Secondly, a bulletin was issued to MG Rover dealers at the time instructing them to recode the SCU so that the warning lamp will not function at all. In short, check there is a sensor fitted to the underside of the header tank and that the warning lamp performs a 4 second self-check when you turn the ignition on. If the self-check performs OK then simply fitting a new header tank with sensor will be sufficient. If the self-check is not operational then as well as fitting a new header tank, a simple coding session with T4 will be required to make the system work”.

My car is 632961 (typical bad luck) and LHD I bought from Germany, so it may need re-coding, and here in the Czech Republic I’ve got absolutely no chance of a re-code.

Regards

Keith

Pscan can re-programme Pektron keys - you'll need all your old keys present when programming in the new one, and the new one will need it's bar code.

I doubt that Philip will have tackled the low coolant system configuration issue - I presume that this error is generated by the BCU rather than MEMS3? In principle, if T4 can do it, the functionality could be reverse engineered, but I guess it depends on the level of demand?

If this is in the same bucket of Pektron configuration as enabling front foglamps, then it is already on the to-do list.

If it's something in the Chinese dashboards (LE500, TF135, 85 Anniversary) then it's also potentially possible but rather less easy.

I would need to know which specific ECU it is that supports this functionality.

The T4 will not talk to a Chinese dash to the best of my knowledge, so if it really is in a T4 then it must be a Pektron thing.

If it is in the Pektron then there must be a physical wire from the Pektron to the dash to turn the light on? So it would be in the wiring diagrams? Could someone look at the wiring diagrams and figure out where the wire from the sensor goes?

The problem is getting the Chinese wiring diagrams. I managed to get the dash wiring one a few years back directly from a guy at MG who had to get permission to release it. I had to agree not to share it too for some reason! Typically I can't find the damn thing now on my pc.... Must be somewhere so when I am back from holiday I'll check again.... I can share pinouts but not the diagram itself (still can't figure out why.... Sigh).

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