Ducato Speedo not working - Motorhome Forums, Motorhome Discussion, Motorhome Chat

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post #1 of 10 (permalink) Old 09-06-2020, 13:50 Thread Starter
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Ducato Speedo not working

And another Ducato fault has popped up on my Rapido,

Suddenly my speedo has stopped working but ALL the other dials and lights are working fine as well as the mileage counter. I have done some research and checked a couple of known faults but after discussion with my local Fiat Garage I have sent the module off to ECU Testing nr Derby. They have checked it and cannot find a problem.

Has any one had or heard off this fault and can offer some advice please.

If the sender on the gearbox is working ok so it counts the miles why not the speedo.

Very odd.

Alan
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post #2 of 10 (permalink) Old 09-06-2020, 14:08
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Originally Posted by Cherekee View Post
And another Ducato fault has popped up on my Rapido,

Suddenly my speedo has stopped working but ALL the other dials and lights are working fine as well as the mileage counter. I have done some research and checked a couple of known faults but after discussion with my local Fiat Garage I have sent the module off to ECU Testing nr Derby. They have checked it and cannot find a problem.

Has any one had or heard off this fault and can offer some advice please.

If the sender on the gearbox is working ok so it counts the miles why not the speedo.

Very odd.

Alan
I believe that on my 2017 Ducato that the speed is measured by the ABS unit which sends the speed signal to the Body Control Module and then onto the speedo.
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post #3 of 10 (permalink) Old 09-06-2020, 14:15
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post #4 of 10 (permalink) Old 09-06-2020, 14:20 Thread Starter
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Thanks Ray,

I have seen this and had a good look underneath. The earth strap is ok and I even attached my heavy duty jump leads to the gearbox and chassis but to no avail. It was a punt sending to ECU but will need to send to garage for their testing but would like to go armed with help as it is not something they have ever come across which I find hard to believe and at 80 an hr cheaper for me to do some groundwork (if you know what I mean).

Alan
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post #5 of 10 (permalink) Old 09-06-2020, 14:38
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Thanks Ray,

I have seen this and had a good look underneath. The earth strap is ok and I even attached my heavy duty jump leads to the gearbox and chassis but to no avail. It was a punt sending to ECU but will need to send to garage for their testing but would like to go armed with help as it is not something they have ever come across which I find hard to believe and at 80 an hr cheaper for me to do some groundwork (if you know what I mean).

Alan
I guess this is what you will be paying for
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post #6 of 10 (permalink) Old 09-06-2020, 14:44
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Ouch, not a nice problem to encounter.

I never realised it was not the old fashioned cable driven, so good to learn.

Thanks,mi hope that you get the problem sorted and, of course, do let us all know what the problem and the do.ution turns out to be, please.

.

Thinking of ALL the front line staff working to try to help others;Doctors, nurses, paramedics, cleaners, NA's, catering staff, support services and all others. Their work is appreciated more than you can ever realise-keep strong and safe.

Any typo that I make means the errorists win.

Remember Jo Cox and what she stood for.

Any comments above are only MY OPINION and should be read as that.

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post #7 of 10 (permalink) Old 09-06-2020, 16:42 Thread Starter
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Thanks again Ray.

Mine is 2008 3 ltr but still "fly by wire" as per the latest versions of Ducato so fairly similar. I will of course let you all know what transpires. I may even setup a "fund me site" on here

Cheers

Alan
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post #8 of 10 (permalink) Old 22-06-2020, 12:46 Thread Starter
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As promised an update.

I have refitted the module after return from ECU Testing. I also pressure washed the wheels to make sure any speed related "thingy" on the front hubs were clean and took it out for a run yesterday. Lo and behold the speedo is working fine as is every thing else on the dash. So either ECU reset it on the test bed somehow or the clean hubs sorted the problem. Shall never know now but saved a few bob by not having to take it to Fiat Garage. If you want a good job doing "do it yourself"!!!!!!!

Highly recommend ECU Testing as a very efficient setup and they keep you informed at each stage of your job.

Alan
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post #9 of 10 (permalink) Old 24-06-2020, 07:19 Thread Starter
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As promised an update.

I have refitted the module after return from ECU Testing. I also pressure washed the wheels to make sure any speed related "thingy" on the front hubs were clean and took it out for a run yesterday. Lo and behold the speedo is working fine as is every thing else on the dash. So either ECU reset it on the test bed somehow or the clean hubs sorted the problem. Shall never know now but saved a few bob by not having to take it to Fiat Garage. If you want a good job doing "do it yourself"!!!!!!!

Highly recommend ECU Testing as a very efficient setup and they keep you informed at each stage of your job.

Alan
And another update.

Had a chat yesterday to the FIAT engineer and he NOW tells me that on my 2008 model the sensor IS ON THE GEARBOX so cleaning the wheels did not help. I now think it was most likely a fault on the dash cluster and some how was reset by ECU when they put it on the test rack.
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post #10 of 10 (permalink) Old 24-06-2020, 14:45
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Aaah, but you now have nice shiny wheels AND a working speedo.....

That's a win-win situation IMO.

Thanks for the update as well !

Thinking of ALL the front line staff working to try to help others;Doctors, nurses, paramedics, cleaners, NA's, catering staff, support services and all others. Their work is appreciated more than you can ever realise-keep strong and safe.

Any typo that I make means the errorists win.

Remember Jo Cox and what she stood for.

Any comments above are only MY OPINION and should be read as that.

http://www.leslezards.co.uk
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