Renault Megan 1.6 Fenix 5

[wwa]

Hello,
I have problem with Renault Megane 1.6 8V on Fenix 5 ( full in gum ), I don't have diagnosis, I try with KTS and Clip. Then I bought another ECU, immobilizer removed with the use of Renault Decodeing Toll and still don't have diagnosis. I put ECU from Laguna 2.0 16V (half in gum) with immobilizer and on this ECU I have diagnosis.

My question is:

When I remove the immobilizer can be problems with the diagnosis?

I cut immo wires in ECU.

[F4kk3r]

you cut immo wires or wire? the only wire to cut is 37.

[wwa]

Sorry for the inaccuracy.
I cut off only one wire, as you say 37 pin.

[baltazar3]

Probably Your MCU on ori ECU is died.Is TMS374 and You can replace and reprogram him .If you cut PIN 37 still have diag.Must be problem with Your decoding tool.I have solution with eprom to reset TMS without risk.

[F4kk3r]

I just had one 2.0L megane with strange symptoms. I tried first with decoder tool... nothing. Then i tried with the "dirty solution" connected the legs of the flash from 1 to 9 but nothing. Then i put the ecu back to car and read fault codes. The ecu said something that is defective. I turned the type from 1 to 2 and car started with immo normally. I think there is also some corruption in processor so it dont want to decode. these are samotimes mysteries.