Fiat's EPS electric circuit

[Filipa Ferraz]

Does any one know how can i find, something related to Fiat's EPS electric circuit??

Or does anyone have some information related to this?!

i am very sory...and i didn't mean to be brut...but i am a girl in a BIG STRESS




thank's for all..big Kiss

 

[toad101]

hi! welcome to the forum,
afraid i don't know about the eps circuit a fiat tech might be along soon

 

[T14086]

what do you want to know?

 

[mountainmachine]

Ahh T will answer all your woes!

 

[Filipa Ferraz]

I want to Know what are the connections in the circuit diagram of a electric steering power circuit of a Fiat's model...

I know that you will say that i need to know the model... but i don't know... my teachers gave me the EPS unit and our job is to Know if it works...

I think that they shouldn't vary very much... this means that the color of the source signal should be the same in all of Fiat's model's...

So.... resuming my problem is...I know it is from a Fiat Model and the constructor is Delphi...but i don't know what model it is...and i haven't the slidest idea where to find it...

And for exemple admiting i would trie to see how it functions, and give a signal of 5V in a channel without Knowing what that channel is... is risk burning that thing up

Am i right??

 

[PNL]

Havnt got a clue but welcome to here anyway

 

[Filipa Ferraz]

thank's a moral suport is allways important

 

[T14086]

Have you a picture of the unit ?

 

[Filipa Ferraz]

I have some images of fotos i took...don't know if you will see what you want..

i could send them to your email...i think they are to big to post it in the forum!!

i have a reference code do you think...i could find some information with it?!

 

[Filipa Ferraz]

Mr. T14086... i have done some more research...and i think there is a program that could help me, the TIS (tecnical information system) do you know here/how could i find it??

another thing...

these are some the images...they are not very visible, as i said before...

last thing...the EPS module stay's at school...so i don't know the reference number but tomorrow i'll give it to you...

 

[Farmer Turner]

Hello

Welcome to the forum!

Go buy a Fiat Stilo - excellent car!

 

[dave]

see here, you dont want to be messing with that

https://www.fiatforum.com/punto-guides/70703-punto-steering-column.html

 

[T14086]

I agree with Dave,yes I could supply you with details of the unit & wiring etc...but what if someone messed about & had a accident...dont want that on my consience

 

[jug]

how can you have an accident at school
(unless its used as a weapon ).

i have a wiring diagram for this power steering system. i can tell you what each wire is for, and where it would usually go to (such as the ecu pin). i can also give you a description of the system and how it works from the manual. from that info you can develop a testing strategy using a multimeter.

i dont think you will be able to test if the different modes work (city and normal) because i believe they are controlled elsewhere and simply result in a change of input signal (not sure about this until i look at the manual), however you will be able to tell if the torque sensor is working, and possibly the motor as well.

i have the manual at home, so i'll post the info later today. (PM me if i forget)

this part is a very common fault on mk2 puntos, so if i had to guess i'd say it isnt working

 

[jug]

you can easily test the electric power steering unit using a car battery and a multimeter.

there are 6 wires:
black - earth
white/red - live (12vDC)

blue - ignition live (12vDC)

purple/black - city mode switch (live or earth to switch modes)

pink/white - signal for City mode light or steering system light on instrument cluster

pink/black - signal for City mode light or steering system light on instrument cluster


first you need to determine which of the 2 pink wires is for the city mode light. to do that wire up the live and earth and ignition live. now use a multimeter (black terminal on earth, red terminal on wire) on either of the 2 pink wires and try switching the purple/black wire live and then earthed then live then earthed etc. check to see which of the pink wire's signals switches on and off as you do this.

the wire with a signal that switches on and off is the city mode light wire. you then know the other wire is for the steering system light.

now attach the multimeter to the steering system light and disconnect the blue wire from live. now reconnect the blue wire and check that the steering system light wire has a signal for a couple of seconds. if the signal stays on it means there is a fault in the electric power steering unit. if the signal switches off after a couple of secs it means the electric power steering unit is working fine.

 

[T14086]

first you need to determine which of the 2 pink wires is for the city mode light

CAN wires.

 

[jug]

both of those wires go directly to the multi-timer unit, which illuminates the instrument panel lights. surely the multi-timer unit doesnt use a CAN bus?

 

[T14086]

If you mean body computer then yes.Remember the cluster is on B-CAN line ,body computer tells it what lights to illuminate.

 

[OBD-Tune]

you can easily test the electric power steering unit using a car battery and a multimeter.

there are 6 wires:
black - earth
white/red - live (12vDC)

blue - ignition live (12vDC)

purple/black - city mode switch (live or earth to switch modes)

pink/white - signal for City mode light or steering system light on instrument cluster

pink/black - signal for City mode light or steering system light on instrument cluster


first you need to determine which of the 2 pink wires is for the city mode light. to do that wire up the live and earth and ignition live. now use a multimeter (black terminal on earth, red terminal on wire) on either of the 2 pink wires and try switching the purple/black wire live and then earthed then live then earthed etc. check to see which of the pink wire's signals switches on and off as you do this.

the wire with a signal that switches on and off is the city mode light wire. you then know the other wire is for the steering system light.

now attach the multimeter to the steering system light and disconnect the blue wire from live. now reconnect the blue wire and check that the steering system light wire has a signal for a couple of seconds. if the signal stays on it means there is a fault in the electric power steering unit. if the signal switches off after a couple of secs it means the electric power steering unit is working fine.

Hello,

I have bought puntos PS in my race car. If i connect negative, 12VDC and ign 12VDC i can´t get it working. Only the small relay on ubit activates but no power steering. I have wiring diagram, but it doesent tell anything on my problem.

My question is following: what i have to do with those two wires (pins 5 and 10).

 

[dennis78]

I'm also interseted for technical data about EPS electric circuit: circuit diagram, wiring, manuals, any what can help. Does any have info about this? I need it because I want to try investigate non-standard specific faults like unstable servo, torque/position sensor faults, bad signals on system,... , how to detect fault component without simple replacing expensive components etc. Most info I found about servoproblems are about resoldering board on servomotor with relays and rotor position sensors, connection problems, but in many times it is not problem.

Thanks