(G) Scudo van with MultiEcuScan

Hi All
Can anybody confirm if MultiEcuScan (Paid for version) should read a Bosch ECU on a 2007 gen 2 Scudo van 1.6 Diesel. I have the software and KKL interface but software is saying it cannot talk to the ECU. I know multiscan will ony read a Bosch Monomotronic MA1.7 unit but I do not know if the ECU I have is that, or the ECU or wiring has an issue. I have checked the diagnostic plug and all pins have all the correct voltages and earth resistances in the right places.

Also, is the intank sender unit a lift pump as well as a sender, supplying fuel to the main high pressure pump

Van currently cranks but wont fire. Any ideas greatly appreciated
Thanks in advance

Hi

Go on MES website.. check out the Supported Vehicle list.. it breaks down which cables and adaptors for which modules

If your F9 set.up tests are ok..

Do the Scan .. for devices.. or similar

That should find most things

Airbags..ABS.. engine

EPAS.. on a car.. but yours is probably hydraulic


Yes pump and sender are generally all one

Tip.. add a gallon of diesel.. the sender might be faulty.. happened on here last week

Let us know what you find

Thanks for the reply sir. I had checked the website and it stated 1 ECU only. I was unsure if that was the only ECU that a Scudo van has or if the ECU listed was the only one covered by the software. Checked all the settings on the software and the interface is recognised by the software and the tests all seem ok. I ran F10 (Connect to ECU) rather than scan for them, but the software would not recognise output from the ECU. I will try to scan tomorrow although I would have thought connecting to the ECU directly would have had the same result as running a full scan, (Although we are talking Italian Electrics).

Good point about the fuel. When priming, the bulb goes firm but seems to take in air when left. I have checked for leaks etc but cannot get fuel to the rail. It may well be that I have enough to prime to the filter but not enough fuel to follow up from the tank once the high pressue pump kicks in. (Filter is new) I am sure there is a fuel delivery problem somewhere but would like to confirm its not a sensor or electrical fault hence trying to read the codes.

But you hear the pump priming?

That is half the battle.. too many things can disable it

The MES:

CAN you get it to drive the rad cooling fan..and dashboard..?

When you say "Hear the pump priming", Turning the key to stage 2, I do not hear anything. If we are talking about the lift pump, then I cannot hear it from the front of the vehicle. My assumption that the high lift pressure pump is mechanical and runs fron the timing belt then I would not expect to hear anything from there? I can hear a very quiet whine, which may be the lift pump but I am not sure until I check

The MES does nothing as I cannot get it to connect. The only option I see is the engine and ECU option to select.

Should you be able to hear the lift pump clearly with ignition on. I know my other vehicles I can but wasnt sure if the pump was quiet or not working?

Hi Matt

On the cars .. the pump is accesible through a hatch in the floor.. you may not have that luxury

Things that stop power to the pump:

Immobilser still active

Fire Prevention System ( has a reset button)

Fuse/ relay / wiring issue

I would pull the delivery hose at the fuel filter..

See if it will cough fuel into a cup..

Did you say this has a French motor.. with the squeezy bulb?

Hi, and thanks again for the reply

On the cars .. the pump is accesible through a hatch in the floor.. you may not have that luxury - No hatch door on a van, so I will probably need to drop the tank, if indeed it is the pump

Immobilser still active - is there anything that would not happen at key on if the immobiliser wasnt working? I cannot access the codes to find out if I have an issue there, The vehicle turns but will not fire., no fuel at the rail, and from memory there is no fuel pumped to the filter either. The priming bulb however does pull fuel through.

Fire Prevention System ( has a reset button)? Not sure my van has one, if it does any idea of location and and where to find the reset button?

Fuse/ relay / wiring issue - Fuses are definately ok, Checked all relays as far as I can find, although there are some that reside in the engine fuse fox that are sealed. It would be nice to know if there is a fuel system relay somewhere in there. I have found today a brown open wire (12v at key on) that currently resides in the branch that feeds the 4 injectors. It has nothing obvious in the area indicating where it comes from, - another puzzle.

I would pull the delivery hose at the fuel filter.. see above do not think I have feed there at all

See if it will cough fuel into a cup..

Did you say this has a French motor.. with the squeezy bulb? squeezy bulb yes, Euro 4 I believe

Not sure if this makes the issue clearer or more complicated

Hi Matt

Conventionally the Immob. Would flash the key (padlock?) symbol for a second during the dashboard self.test

It will go out..and stay out.. if the keychip is recognised

Immobilising doent generally stop cranking..

but will stop combustion..
(no ignition..or pumping of fuel)

You should hear the lift pump buzz..

DO check if glowplugs get their 10 seconds of power..

Are you in a position to rig up a gravity fed fuel supply to the filter..?

So you can see if it runs without reliance on the liftpump


Some other background..

https://www.fiatforum.com/scudo/447228-dead-2002-scudo-2-0-jtd.html?447228=#post4241672

Thanks again
If I get time tomorrow, I will check the immobiliser light on the dash to ensure its working correctly via the light.

I have cranking but no fuel, and definately cannot hear the the lift pump.

I havent checked power to glow plugs as the fuel not being there was my first port of call. I will do that as well, I guess the reason to check this is to further prove its a combustion issue linked to the immobiliser rather than a fuel pump issue?

I was under the impression that the fuel system - pre high pressure pump - would need to see a lower pressure of some kind as a trigger to tell the ECU to open the various solenoids into the high pressure pump, if that makes sense. The fact that the priming bulb pressurises when pumped tells me that it must be. If I can rig up some kind of gravity feed, would the hgh lift pump just draw it fuel in? Or is my thinking right and it does need a pump to add some kind of pressure.

If I can I will try and run a seperate power to the pump to see if it runs

Do you know if the Gen 2 Scudos (2007 1.6 hdi) have a fuel shut off solenoid or switch anywhere. I have looked on line and can find no reference to it. Pre 2007 does, but after that I can find no information.

Thanks again for you time and input

Hi ,
There is no pressure sensor between the in tank lift pump and the high pressure pump.

It is normal that your bulb goes firm after a few squeezes.

So, Quick update so far
Checked in tank pump. Pulled the connector apart and found 2 wires rather than 4 which didnt make sense if I am looking for a sender and pump unit. Now thinking that I do not have a lift pump in the tank. Quick phone call to the spare parts dept at a main dealer and he confirms via the Reg no. that it is a sender unit only.

My assumption now being that fuel is drawn from the tank, through the filter via the priming bulb, through the HP pump and then back to tank

From an immobiliser point of view, I have no dashboard light that would indicate to me if the system is talking to the key or not. I believe that I would get a written conformation of an "Anti theft immobiliser fault"above the radio on the dash, which I am not seeing - although I am not totally convinced and may get the Key checked to see if it is emitting a signal. The fact that the van is indicating its in "Economie" mode and cutting out various systems in not helping diagnosis

Having read a bit more, It appears that priming of the 1.6hdi, can be problematic Can anyone confirm, The bleed valve on the top of the filter, when opened it appears to suck air in as well as expel it when priming the pump. closing it I can get the bulb to firm up, but sill think there is air in the system. Is there a correct way to prime? Thought about putting a vacuum on the bleedscrew to pull the air out.

Any comments much appreciated
Thanks, Matt