renault clio uch problem

[bubi21]

Hello!
I have immo problem with clio 1.2 16v 2002 year.
So I removed immo protectin from ECU and engine starts o.k,
but the problem is when I connect Uch the immo protection is again on and engine dosent start any more.Does someone have solution for this kind of problem?

Ecu:IAW 5NR2.C2

[adam28]

You need to first immo off the ECU and before you put it back in the car you must cut the immo line. (Thats the wire that goes to to the ecu plug.) You need to find which pin is the immo line so you can cut the correct wire.

[bubi21]

That would be good option but connection between ECU
and UCH is Can bus (high and low)
When I disconnet Can bus motor starts but instrument panel dosent work.
Is there some dump for Uch?

[adam28]

That would be good option but connection between ECU
and UCH is Can bus (high and low)
When I disconnet Can bus motor starts but instrument panel dosent work.
Is there some dump for Uch?

Oh yeah. Im not quite sure if there is a dump for UCH,but would like to know.

Cheers

[bubi21]

Is there somekind of emulator for UCH or ECU?
Or some one noes how to put eeprom 95160 in
write protect mode?(eeprom in ECU)So that UCH
can't change the virgin dump.

Thanks!

[adam28]

Is there somekind of emulator for UCH or ECU?
Or some one noes how to put eeprom 95160 in
write protect mode?(eeprom in ECU)So that UCH
can't change the virgin dump.

Thanks!

Im very interested in a solution mate with this too, because sure enough one will come in to me.
So anybody have experience with this ECU with can bus.

Cheers

Adam

[bubi21]

I was trying to put eeprom in wp mode but with out
succses.
Does enybody knows for emulator that works with dis Uch
(immo type 3)?

[adam28]

I was trying to put eeprom in wp mode but with out
succses.
Does enybody knows for emulator that works with dis Uch
(im*o type 3)?

I have got a feeling its not possible to immo of this ECU with can bus.

Cheers

[bubu782001]

Let me explain to you how this is work.
If the ECU (injection computer) is virgin normally the UCH unit automatically write the "new" code into the virgin ECU.

I think you have the injection computer with a problem or a UCH problem.

Look on this MR ("Manuel de R?paration" called by Renault) Electrical Equipment (http://www.scribd.com/doc/27225823/Electrical-Equipment) on CHAPTER 82

On PAGE 82-5 in the table on the last line, we have the following scenario:

1. UCH - CODED (your case)
2. Ignition Key - CODED (also your case)
3. Injection computer - this is the interesting part:

IF the ECU is im*o clear, for the FIRST TIME when is connected to the car (to UCH) it will LEARN the im*o code from the UCH and will be paired with the key and UCH.

So, on PAGE 82-8 it says:

"The injection computer is delivered non-coded. It has to be programmed with the code of the engine im*obiliser system when fitted, to enable the vehicle to start.

Simply switch on the ignition for a few seconds without starting the engine. Switch the ignition off; the im*obiliser will be activated after a few seconds (engine im*obiliser indicator light flashes).

Are you sure that YOUR keys are correct paired with UCH? If not, you will need REPAIR CODE (for UCH) or to virginise UCH (don't know how to do it...).

If i remember you have a Magneti Marelli 5NR2.C2 or C5 ECU. Warning!! There are 2 types of this ECU, first called 5NR and second named 5NR2.
5NR is fabricated only on first version of Clio's (until 2001). After that date, 5NR2 has replaced first version.
There are pin compatible this 2 types of ECU - the only difference is the potentiometer of accelerator pedal.

Inside this 2 versions of ECU are TOTALLY different. First have a HYBRID circuit (ceramics...very compicatd and fragile), second 5NR2 is more domestic with a classic PCB.

[bubu782001]

It doesn't really matter if the im*o code is transimtted by im*o dedicated wire or over can network.
The second generation of ecu (5NR2) can handle both methods.
For example on Twingo built after 2002 the im*o wire is still used for transmit im*o code (like old system on 5NR). Also on Twingo built after 2002 the dashboard warning lights are still analogic cotrolled - by ECU (so this system doesn't utilise only CAN). If it is on can, it use the can network (like Clio dashboard case) but aslo can utilise the old system.
I told you. The 5NR2 ECU have the same pins like 5NR ECU but 5NR2 can handle extra fuctions (it has integrated cruise control, can transmit the im*o code over the CAN network etc)
I think you did incorrectly or wrong, im*o off on that ECU.
So, the im*o signal is transmitted from UCH to ECU by dedicated wire, or CAN network.
On dedicated wire, the im*o code is recived by ECU on pin D3 - BLACK CONNECTOR of the ECU - this is available for both types of ECU (5NR / 5NR2).

[adam28]

It doesn't really matter if the im*o code is transimtted by im*o dedicated wire or over can network.
The second generation of ecu (5NR2) can handle both methods.
For example on Twingo built after 2002 the im*o wire is still used for transmit im*o code (like old system on 5NR). Also on Twingo built after 2002 the dashboard warning lights are still analogic cotrolled - by ECU (so this system doesn't utilise only CAN). If it is on can, it use the can network (like Clio dashboard case) but aslo can utilise the old system.
I told you. The 5NR2 ECU have the same pins like 5NR ECU but 5NR2 can handle extra fuctions (it has integrated cruise control, can transmit the im*o code over the CAN network etc)
I think you did incorrectly or wrong, im*o off on that ECU.
So, the im*o signal is transmitted from UCH to ECU by dedicated wire, or CAN network.
On dedicated wire, the im*o code is recived by ECU on pin D3 - BLACK CONNECTOR of the ECU - this is available for both types of ECU (5NR / 5NR2).

Thanks for this good info mate;)

[bubi21]

After a long search I didn't find a complet solution of my problem so I made temporarily solution.
I have manage to put eeprom 95 160 in WP mode,so that UCH couldn't change my dump anymore.But that didn't
helped because UCH was blocking ECU over the can bus.
(with some message,and not with changing dump)
So I have put a double switch on the can bus and before
starting I disconnect can bus,engine starts o.k then connect can bus again so that instruments can work.

To put eeprom 95 160 in wp mode:
system register:100001100
lift pin 3 up

[teerak2uk]

i have the same vehicle but uch has a problem on windows can i transfer components (eeprom) from one to another to basicaly transfer the coding both ar N3 uch`s but one says

DV4.8
and other says
AV5.2


many thanks