Technical Ducato 250 Ignition switch

[Saltpeter]

Hi, I am trying to replace the ignition switch on my 2006 2.3 multijet but the new switch does not seem to work. Is there some trick to align the switch mechanism to the steering lock actuator? I assembled the new ignition switch to the steering lock but when I connected it and turned the key nohing happened at posn MAR until I got to AVV and then the normal dash/engine lights came on but no start. I assumed that the switch is not correctly aligned with the actuator in the steering lock?
Any help / advice would be really welcome.
Thanks in advance.

 

[Communicator]

I had a similar problem when changing the ignition switch insert on my x244 a few months ago. After several attempts with a cheaper one from Ebay, I eventually gave up. (I am proficient with electromechanical devices.) A second much more expensive replacement again from Ebay, just dropped in at first attempt. Lesson learnt.
For the unsuccessful module see attached photo. This has two raised bars at the rear which I assume should engage with two pins on the actuator, but only one can drive at a time. The correctly fitting part had a Fiat part number, 1389442080, on the box. The driven end was light grey with two slots reminiscent of the hands of a clock. Both slots can share the drive from the actuator in either direction.

My application was as stated for the x244. The centre pin of connector A, is a 6.25mm blade, while all other pins are 2.8mm. The switch has 4 positions, as it includes a parking lights facility. The above part may also be used in the x250, but this application is not confirmed.

 

[Saltpeter]

I had a similar problem when changing the ignition switch insert on my x244 a few months ago. After several attempts with a cheaper one from Ebay, I eventually gave up. (I am proficient with electromechanical devices.) A second much more expensive replacement again from Ebay, just dropped in at first attempt. Lesson learnt.
For the unsuccessful module see attached photo. This has two raised bars at the rear which I assume should engage with two pins on the actuator, but only one can drive at a time. The correctly fitting part had a Fiat part number, 1389442080, on the box. The driven end was light grey with two slots reminiscent of the hands of a clock. Both slots can share the drive from the actuator in either direction.

My application was as stated for the x244. The centre pin of connector A, is a 6.25mm blade, while all other pins are 2.8mm. The switch has 4 positions, as it includes a parking lights facility. The above part may also be used in the x250, but this application is not confirmed.the

Thanks C, that's very helpful. My concern is that the registration of the circular actuator that turns when the key is turned seems not to be engaged properly with the switch.It seems this can be moved relative to the key position and I am not sure where the circular revolving part should sit when the key is removed. 2 pics attached show what I mean. Where should the rotating part sit?

 

[Communicator]

Thanks C, that's very helpful. My concern is that the registration of the circular actuator that turns when the key is turned seems not to be engaged properly with the switch.It seems this can be moved relative to the key position and I am not sure where the circular revolving part should sit when the key is removed. 2 pics attached show what I mean. Where should the rotating part sit?

I am sorry but my experience with the first switch module that I eventually abandonned was similar to yours. I set the switch to the off position, and tested for no connections. The actuator was in the key off position, with key removed. It was only after many attempts that I gave up, which I do not do easily. Here is a link to the one that I eventually fitted at first attempt, without any problem. Note that it may not be suitable for your x250., which seems to have 4 drive pins on the actuator, as I recall, my x244 has only two pins.

I case it may help, I am attaching functional diagram of the x244 switch which I believe will be similar to yours. It may help to confirm initial position. Utilisation of PARK connection is different on x250. To understand my diagram, there is a connection across the digram is indicated by a black square.

 

[Saltpeter]

I am sorry but my experience with the first switch module that I eventually abandonned was similar to yours. I set the switch to the off position, and tested for no connections. The actuator was in the key off position, with key removed. It was only after many attempts that I gave up, which I do not do easily. Here is a link to the one that I eventually fitted at first attempt, without any problem. Note that it may not be suitable for your x250., which seems to have 4 drive pins on the actuator, as I recall, my x244 has only two pins.

I case it may help, I am attaching functional diagram of the x244 switch which I believe will be similar to yours. It may help to confirm initial position. Utilisation of PARK connection is different on x250. To understand my diagram, there is a connection across the digram is indicated by a black square.

Thanks for your help, I have managed to assemble the key switch / actuator and re-fitted it and it works! so far..........fingers crossed.

 

[Communicator]

Thanks for your help, I have managed to assemble the key switch / actuator and re-fitted it and it works! so far..........fingers crossed.

I noticed that you had removed the complete lock assembly. I changed my switch module with the lock in situ. This avoided removing, and replacing the shear bolts. Good luck.

 

[Saltpeter]

I noticed that you had removed the complete lock assembly. I changed my switch module with the lock in situ. This avoided removing, and replacing the shear bolts. Good luck.

Hi back again!
Does anyone know a source for an ignition /starter switch with 7 pins/connections for Ducato 250. I ordered one but had to return it as when it arrived it had 5 pins. I have searched in vain for one with 7 pins but no luck......

 

[Communicator]

The switch insert that I fitted came via Ebay. I initially bought a cheap version, but gave up on it, as I could not manage to get the correct mechaical engagement to give the required electrical connections. For me to discard something unused, is almost unknown.
The more expensive replacement was fitted easily, by comparison.

Part number for Ducato 244 is 1389442080. This has one large pin (6.25mm) at A2, with the remaining 6 pins being smaller, 2.8mm?

The part number above may not be correct for your 250, but the switching functions seem identical., external connections for lighting circuits are different, on the 250 model.

 

[Saltpeter]

1389442080

The switch insert that I fitted came via Ebay. I initially bought a cheap version, but gave up on it, as I could not manage to get the correct mechaical engagement to give the required electrical connections. For me to discard something unused, is almost unknown.
The more expensive replacement was fitted easily, by comparison.

Part number for Ducato 244 is 1389442080. This has one large pin (6.25mm) at A2, with the remaining 6 pins being smaller, 2.8mm?

The part number above may not be correct for your 250, but the switching functions seem identical., external connections for lighting circuits are different, on the 250 model.

Thanks for your help, I looked on the net and found the part number 1389442080 on Part Auto. In the list of vehicles it has Ducato 250 but not 244, strange? Maybe they both use the same part? I will wait it's arrival with fingers crossed.

 

[Communicator]

Thanks for your help, I looked on the net and found the part number 1389442080 on Part Auto. In the list of vehicles it has Ducato 250 but not 244, strange? Maybe they both use the same part? I will wait it's arrival with fingers crossed.

From my research, I think that you should be OK if existing switch has the correct mix of pin sizes. Electrical function of switch appears to be identical on both models, but I expect that pin B4, which is at one end of the 4 way connector, is not used on the 250 model.

 

[Saltpeter]

From my research, I think that you should be OK if existing switch has the correct mix of pin sizes. Electrical function of switch appears to be identical on both models, but I expect that pin B4, which is at one end of the 4 way connector, is not used on the 250 model.

You are right, the B4 pin has no wire so is not used. Out of interest, when you put the new switch into the steering lock assembly what position was the key in? or was it taken out?

 

[Saltpeter]

I noticed that you had removed the complete lock assembly. I changed my switch module with the lock in situ. This avoided removing, and replacing the shear bolts. Good luck.

Hi Again,
I ordered 1389442080, was told it was ''compatible'' with my Ducto 250 but, like all the others does not work! When the switch is set in the ''MAR'' position there is contact between the correct out/in pins but I now have 5 switches and 2 steering locks, none of which will fit together to make the correct connections. Like you ,I am competant with electro-mechanics and It's driving me mad! Seems the only solution is to buy yet another steering lock complete with the switch installed and hope they send the right one? This could go on for ever..........