Re-Installing The Standard R34 Gtr Ecu - Transponder Imobiliser Question.

[GTRNUR]

A friends R34 GTR power fc has an intermittent fault which is causing it to drop 2 cylinders at idle at random and reading negative air temp values on a 25 degree day. Its not just air temp being affect as well, Ive logged irregularities with the TPS and MAF sensors too.

So Ive told him to re-install his standard ecu until he can source a replacement.

I've since been told that his "mechanic" tried to do this, but the car would not start when the standard ecu was re-installed. Is it likely that this is BS, or is there some sort of proceedure that I need to be aware of to re-install the standard ECU in the car. (Injectors and coils are all standard. The car only has an exhaust and a boost controller.)

I would presume the ecu would not drop its pairing with the transponder key when the ecu is disconnected from the loom. Otherwise if a battery ever went flat in a car, the keys would need to be re-programmed all the time.

Thoughts... Suggestions?

Cheers,

Ian

[paulr33]

read up on the system in the service manual

find the 34R service manual and it tells you about the system

its called NATS

[paulr33]

here

[paulr33]

its only in the supplement manual for BNR34 - i highlighted the filename at the top left

the normal R34 service manual doesnt have any info on the NATS or ATTESSA/E-TS systems

[GTRNUR]

Thanks Paul. Thats what I was looking for.