ECU effects if not de mobilised

[James5_GTT]

I am after a bit of a advice doing a 172 conversion into my R5 using all the 172 bits and apparently my ECU is demobilised.

Now I have wired it all up and attempted to crank to find that there is no crank??
I know the ECU is getting power and everything else is getting power, what effect does the ecu immobiliser have??

 

[mattjk]

It should still crank if the immobiliser is active, just no fuel/spark.

 

[geesus69]

does the starter motor make a noise at all? click of any sort?

 

[James5_GTT]

does the starter motor make a noise at all? click of any sort?

No noise or click looks like I need too try my spare known working starter motor
Cheers all

 

[James5_GTT]

I am hoping this is down to bad block earth will get a few more earths on

 

[ditz]

i had the same prob when i did mine and found a white wire to the starter relay needed a permanent earth in order for the starter trigger to work.

i just wired it to an earth and its fine...

it should still attempt to crank with a bad block earth.. mine just clicked (as if the starter was seized) so i fitted an earth strap from the box to the body

 

[James5_GTT]

Well starter engages, and the fuel pump sounds for a couple of secs then goes off????
I will check to see if spark over next couple of days

 

[Matteh]

where did you get it decoded?

few of us now with 172 conversions with no ecu issues

all you should really need is a constant live, ignition live, fuel pump and starter motor.

other than that, double check all the neccessary wiring like the crank position sensor.

When mine did this it turned out to be the little earth that branches off near the starter motor and lambda etc...

 

[James5_GTT]

where did you get it decoded?

few of us now with 172 conversions with no ecu issues

all you should really need is a constant live, ignition live, fuel pump and starter motor.

other than that, double check all the neccessary wiring like the crank position sensor.

When mine did this it turned out to be the little earth that branches off near the starter motor and lambda etc...

Many thanks for all the advise i am confident with my wiring that all is ok but will double check anyway.

I purchased the phase 1 ECU of a fellow Cliosport member who apparently got it demobilisied by RS Tuning gave me all the details to contact them which I am going to do.

 

[Matteh]

I've heard of 'issues' with RSTuning decodes. They seem to require an emulator in addition to the decode. almost as if the ECU will accept any imobiliser code, but it still needs *a* code, if that makes sense? iirc, both geesus and danlp6 had this issue

Beanie and I used www.ecuclinic.com and it came back plug and play if it's any use to you

 

[James5_GTT]

I've heard of 'issues' with RSTuning decodes. They seem to require an emulator in addition to the decode. almost as if the ECU will accept any imobiliser code, but it still needs *a* code, if that makes sense? iirc, both geesus and danlp6 had this issue

Beanie and I used www.ecuclinic.com and it came back plug and play if it's any use to you

Thats perfect mate going to call RStuning tomoz and see what they say if no good will go through ecuclinic. Many thanks for the advice.

 

[James5_GTT]

Thats perfect mate going to call RStuning tomoz and see what they say if no good will go through ecuclinic. Many thanks for the advice.

Out of interest how much do ecuclinic charge?

 

[Matteh]

it's £158 (inc return carriage) these days

 

[RSTuning]

If it's the ECU i'm think of it was virginised NOT immo off. As said above, immo off needs an emulator fitting inside.

 

[James5_GTT]

If it's the ECU i'm think of it was virginised NOT immo off. As said above, immo off needs an emulator fitting inside.

Virginalised ? What does that mean

 

[RSTuning]

Virgin means ready to pair to another UCH unit

 

[James5_GTT]

I am starting again on this thread as it might or might not be related, I am having some problems with my conversion the car now cranks, and the fuel pump primes, the car attempts to start but doesn't.

I am going to test the fuel pressure to make sure that is OK as I have now wired up a switch to the pump.

 

[James5_GTT]

Update been out playing with the r5 172 and have tested everything I can think of I have got 3.5 bar to fuel rail, I have spark for a couple of secs whilst cranking the same for fuel pump (although I have put a switch online aswell) starter is fine and battery is good. Any ideas anyone?

 

[Matteh]

what loom are you running?

 

[James5_GTT]

what loom are you running?

Phase 1 matey,

Basically my engine is a phase 2 engine that has been converted to a phase 1 cable TB

 

[geesus69]

this is like my problem that i had (still have) now and again

for some reason i dont get ign live to the ecu (i put it down to a bad connection at the ecu plug)

stick a mulimeter in the ign live on the ecu plug (whilst attached to ecu, forget which pin it is) and make sure you have a reading there

if you have a good stable reading, on to the next thing

 

[James5_GTT]

this is like my problem that i had (still have) now and again

for some reason i dont get ign live to the ecu (i put it down to a bad connection at the ecu plug)

stick a mulimeter in the ign live on the ecu plug (whilst attached to ecu, forget which pin it is) and make sure you have a reading there

if you have a good stable reading, on to the next thing

Excuse the footage not the best LOL - But this is what I am getting I have today removed the TDC and going to pick up a new one from Renault tomorrow

 

[James5_GTT]

Just so I get this correct which one would you say on this is my ignition live

 

[geesus69]

im almost positive its pin 29

but im going from memory as i have stuck a multimeter probe in there so many times i just 'know' where it is lol

should be a yellow wire, with a red one next to it iirc (a red wire pin 30??)

 

[Matteh]

according to that, 66 and 29 should be yellow (+12v with ignition on) and 30 should be 12v constantly

 

[James5_GTT]

All the above is correct and still not blooding running this is so confusing:S, I have replaced the TDC (brand new from Renault), bridged the inertia switch, got 3 bar fuel pressure to rail, injectors are firing, fuel pump is on a switch and I have checked my wiring which to be honest isn't much required to get it running.
Live wires
Battery to starter,
Battery to alternator,
Battery to 172 engine loom,
Ignition barrel to battery,
Ignition lives,
Ignition barrel to 172 engine loom,
Earths,
4 x engine earths,
the usual interior earth points,
As said above the fuel pump is on a switch (Temporary solution for the ime being)
??????????:S:S:S:S:S

 

[James5_GTT]

:S

 

[Scott™]

Just about to start the wiring on my Megane Coupe into the 172 engine Think im very well going to need to PM you if thats ok. Sorry to spam.

 

[James5_GTT]

Just about to start the wiring on my Megane Coupe into the 172 engine Think im very well going to need to PM you if thats ok. Sorry to spam.

No probe matey if I can help I will LOL I just need to get it running