[Criscarp]

If you are 100% its not the actuator, I would be checking the wiring from the plug back to the DME plug. The fault code seems to be an issue with the status line. The ecu is unable to tell what position its in.

 

[Criscarp]

I do not have a circuit diagram but have you checked the fuses?

 

[Criscarp]

Well you can still check if the actuator is getting terminal 15 voltage and do a continuity test on the other connector cables back to the DME. Inspect the plugs on the DME for corrosion/water ingress. If all that is fine I wouldn't know what else to suggest other than scoping the pwm signals to the actuator and DME.

 

[Criscarp]

I do not have a circuit diagram. I have had a quick look at one for a diesel unit which is not your one. You say you have the diagram.

I guess you should have battery voltage on one pin, voltage supply from terminal 15 through the DME on another, ground on another and then pwm inputs and outputs. At a guess.

 

[Criscarp]

Yes do let us know the outcome, how many pins are in the actuator plug?

 

[Criscarp]

Just a quick question? What happened when the original fault on the original turbo occurred? Did it just stop working? Or any intermittent problems before hand? Same code any other codes? Do you still have the original actuator at hand?

 

[Criscarp]

I was going to ask if you knew the hella part number on it? If the fault you are having now was not there on the original could it be possible you have fitted the incorrect part actuator?

 

[Criscarp]

Ok so you fitted the whole turbo that had the same actuator part number as your original. It was just a thought.

Do you have the second actuator at hand?

 

[Criscarp]

Pin 2 and 4 reading 11.8v
Pin 1 and 4 reading 11.8v
1 and 3 reading 1v
2 and 3 reading 1v


So there is power for sure

Like I said previously I do not have the circuit diagram that you have in ista or what type of actuator you have on the turbo or if it is the correct one.

Are those values at the 5 pin loom plug with the actuator unplugged?
Can you post the wiring diagram that you get in ista?

 

[Criscarp]

Looks like the ground is missing from pin 2.

 

[Criscarp]

As been said from the beginning you need to check continuity of the wiring.

The ground is obviously missing so the actuator is not powering up thus the code 00449A no position signal back to the DDE. In the DDE/ecu box check the connector X6011 pin 7 should be zero volts

 

[Criscarp]

Pin 2 on the actuator is permanent ground(0 volts) from this pin the wire goes to connector X6011 pin 7 in the ecu box and then continues to chassis ground. Measure voltage at X6011 pin 7 should be zero. Check this connector for good connections.

Report back the voltage. Black probe on metal part of car body/engine, red probe on the connector

Yes looks like pin 2 of actuator is floating and not grounded/disconnected.

Try that first

 

[Criscarp]

You might find the turbo may wakeup when you move the wires.

 

[Criscarp]

As been said from the beginning you need to check continuity of the wiring.

The ground is obviously missing so the actuator is not powering up thus the code 00449A no position signal back to the DDE. In the DDE/ecu box check the connector X6011 pin 7 should be zero volts

This

 

[Criscarp]

View attachment 291165

That looks weird Is it bent over and stabbed on the other side, I can not make out clearly from the picture I don't have my glasses.

 

[Criscarp]

Working?

 

[Criscarp]

Glad you have eventually got it fixed it must have been driving you nuts. I enjoy trying to help where I can it gives me something to do as don't get out much and I enjoy the learning and find it interesting. Pass the love on and help someone else in need.