Not sure if this applies to your vehicle - but it may be of assistance: https://lab-aftersales.fiat.com/ele...Name=Diagnosi per DTC&validityName=3.0 JTD E5
@coxo Looking at captured freeze frame data in your MES screen shows Actual Turbo Position matching Desired at 100%, so would this not indicate that turbo is at correct position, thus vacuum solenoid control is doing its thing correctly? That data also shows Actual Boost Pressure is only at 191 mBar where Desired is 971 mBar so this points to the issue. The Atmo Pressure seems correct at 1013mBar. I am no mechanic, but does this point to either leaky inlet system or failed MAP sensor or wiring fault of the MAP sensor (considering you have replaced it)? Worst case is failed turbo. Have you checked the integrity of the MAP sensor wiring - short to ground or volts or open circuit?
If it was map sencor would I not get that error code. Like last time before I changed it ?
Not sure - like I said - I am not a mechanic. Have you any means of testing the actual manifold pressure with another test instrument? If there are no leaks in the inlet system (or blockages? - have you checked the Actual Inlet Air Flow against the Desired Inlet Air flow?) then it is pointing towards the Turbo considering the Actual Turbo Position matches the Desired Position. I guess one rudimentary way of testing the turbo solenoid would be to just remove the vacuum hose as a test?
I checked the ohms on the boost solanoide and it’s only 15 ohm according to what I have found so far it should be the ohms should be 25- 35 ohm I also check voltages from harness and that’s good
If you look at the data in your screen shot, the Actual Turbo Position agrees with the Desired Turbo Position. My understanding is the Position Sensor is on the Turbo, so the actual vacuum solenoid is probably doing its job in driving the turbo to where it is supposed to be. This all indicates the turbo is in the correct boost position. So, unless a linkage is broken, or a leak or blockage in the inlet system, or an issue with the turbo itself, I am not sure what else it can be, seeing you have already replaced the MAP sensor and checked the wiring (I assume). There will be more enlightened people here than me, so perhaps you might get a bit of good advice soon.
Thanks for that link I tryed it it clicked a couple off times then stopped then I restarted turned egnitine off and dosnt click now it’s just getting hot now
This may also be valuable for you: https://lab-aftersales.fiat.com/elearn_testreda/250001602.pdf
Sounds like you may have found the fault. From all accounts it is a reasonably common failure and relatively cheap and easy to replace the vacuum control solenoid.
