Technical FIAT DUCATO ECU
- Thread starter Crazy1983
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Technical FIAT DUCATO ECU
Given the age and engine type, I suspect it doesn't have very much in electrical ECU type control.
The later JTD common rail ones do.
What is the problem?
I am sure someone on Forum has knowledge.
Given the age and engine type, I suspect it doesn't have very much in electrical ECU type control.
The later JTD common rail ones do.
What is the problem?
I am sure someone on Forum has knowledge.
I need to access the ECU, to delete the key code. I already have the van almost completely disassembled and I can't find the ECU
If your Sofim 2.5 engine has a Bosch injector pump with four pipes coming from it, then there is much documentation on the Forum on how to overcome/bypass the immobiliser side.
Can you provide a photo of the back of the injector pump where the high pressure pipes come out?
Attachments
Has the cam belt broken?
What ever the reason for missing cam belt disconnect the battery and put a massive notice on steering wheel not to crank engine. If engine turned without timing belt on very expensive destruction will ensue.
What ever the reason for missing cam belt disconnect the battery and put a massive notice on steering wheel not to crank engine. If engine turned without timing belt on very expensive destruction will ensue.
old photo, engine is ok, key code does not erase from the dashboard, I need to access the ECU to clear the code, so the car can start without the key code
What you have is the Bosch pump that on earlier engines simply had a solenoid that was powered up by a 12 volt supply to allow engine to start.
When the manufacturers were trying to make vehicles more secure they started like yours with a simple electric circuit to activate that solenoid covered up by a security plate.
It is a pain to get off but many of us have done so to simply power the 12 volt solenoid.
However for ideal security it is worth checking if the original design can be repaired.
There is advice on Forum by members who have a better understanding of that side.
The last one I did was a 1997 2.8TDi and as the engine was going into a boat , whilst it was out I had easy access to remove all the security cover and bypass it as I didn't not want to suffer an electrical fault several miles out to sea!
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Following on from Mike..
On the injection pump is a black box with 3 wires. When the black box receives the correct code it supplies the pump "stop" solenoid with battery voltage enabling engine running. The black box covers the stop solenoid.
On Some vehicles of this vintage the black box on pump receives code from key, others have an additional electronic box inside vehicle that receives code from the key the if key code correct sends the correct black box code to the black box to enable starting.
On the injection pump is a black box with 3 wires. When the black box receives the correct code it supplies the pump "stop" solenoid with battery voltage enabling engine running. The black box covers the stop solenoid.
On Some vehicles of this vintage the black box on pump receives code from key, others have an additional electronic box inside vehicle that receives code from the key the if key code correct sends the correct black box code to the black box to enable starting.
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Communicator
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From reading other threads relating to the x230 model pre 2000, I think the the highlighted alternative is more likely. In this case the code receiver is usually fitted under the lower steering column shroud. It is possible that reseating the connectors on the code receiver, and applying contact cleaner, may cure the problem. It would be easier than removing the immobiliser from the pump, which is the ultimate solution. Do not set hopes too high for this easier fix. The design life of the electronics is typically 20 years, and the vehicle is 27 years old. Also do not have any other keys or metal objects attached to the key, as will absorb the already weak signals.
Another point to check is the contiuity of the aerial ring and connecting lead, for which a recent poster quoted a resistance of 30 Ohms.
It's all original, injection engine, etc. I went to the electrician and the easiest way is to clear the ECU code.Hence my question where to locate the ECU?
The key codes are ok, they have already been tested. I took the box under the lower steering column cover to the electrician but he said he wants the ECU
As @Communicator says check under steering column shroud.
Note as has been mentioned parts may be past their "sell by date" so most reliable option may be direct power to the solenoid as the pump is a fairly simple set up.
Does your electrician know this model and age. It's a long way from modern ECU immobiliser systems.
If you just want to get it running many have gone the route suggested and at little cost, just a bit of labour with a Dremel etc.
Often the fault can be in the circuitry behind that shroud , so you may have to access it anyway.
The electrician is asking for something that does not exist on your vehicle.
Your vehicle was made before engine ecus for diesel engines came into common use.
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Communicator
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As explained previously, a 1997 Ducato does not have an ECU. Later x230 models which were manufactured from mid 2000, and fitted with common rail engines would have an ECU.
I have to asume that the key codes have been tested by insrting the key, and checking thet the light goes out after the key is turned? How else?
If the key code light goes out, the engine cranks and does not fire, then there could be other problems.
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Finally a concrete answer saying that there is no ECU, thank you. So the only solution is to remove the immobilizer from the pump?
As was suggested earlier
