Passat 1.4 TSI misfire cylinder1

Vw Passat 2010 TSI 1.4L
After I re did the cylinder head, the car went good for like 20 min. I turned off the car. Come back after 1 hour and I started the car but the engine went roughly, I red the fault codes and I got p0444 , p0201( injector circuit open cylinder 1) and also p0301( cylinder 1 misfire detected. I shifted the coil, spark plugs and the injector with no result. I tested the connector for the injector with a small led lamp and it was not flickering but it has lighting continuously so does the other connectors for the other injectors. Tested the voltage and it was 10.5V at all the connector with a running engine offcourse.
Hope to hear from you.

First question as I am not familiar with this system. Is this a GDI injection system or a regular port type system?

Hello!
Exactly. It's a GDI. With both gas and gasoline. It's called Ecofuel. It has a time chain problem then I chnged all valves.
I did not buy any part yet. Just shifted the coil, speak plug and injector for cylinder one with other cylinder to eliminate the possibility of faulty parts.

Hello again
I went through the car's registration papers and it's called VW PASSAT ECOFUEL DSG
Maybe this will help?

1- The fault code indicates a circuit problem. By swappinbg the injector you almost ruled out a component failure as the fault didn't follow the injèctor. You may want to verify wire integrity from the injector to the control moddule.

2- These injectors are both power and ground side controlled. Scoping them might indicate the circuit leg with a possible problem. If you decide to do so be aware of using attenuators as this type of injector surpassess the input voltage limit of a many of scopes.

Hello!
I spent many hours today searching the wires between the injector and other engine sensors and between the ECU. I found only one damaged cable Wich has nothing to do with the injector for cylinder 1 but that wire fixed the fault code P0444 so this code disappeared. Now I have these 2 codes P0201 and P0301 and the car still idling roughly and EPC lamp is on.

Follow the wires and check for a black plug near the cyclinder head... take it apart and make sure all the contacts look good

...

Thank you Ninjaxchicken.
I already checked all wires, plugs and contacts between injectors, all sensors on motor and between the ECU.
Any new idea?

love_soul30 wrote: Thank you Ninjaxchicken.
I already checked all wires, plugs and contacts between injectors, all sensors on motor and between the ECU.
Any new idea?

How did you check the wires to that injector? With this being a GDI system, using a test light like I've shown in many videos on testing fuel injectors is NOT going to be the method of choice.
Have you identified the two injector wires for the #1 cylinder at the ECM connector? You need to do this first, then disconnect the ECM and the injector and do some open and short to ground tests on the injector wires using an ohmmeter.
Certainly a scope would help us here but I'm giving you a test using equipment I know you have.

Hello!
What I did was I disconnected the ECM connector, found out the one of the injector's wires is a ground, I compared it with the other injectors wires who has the same wire colour and all of them was ground.
I figured out the other wire for cylinder 1 injector in the ECM and I checked it with avo meter from both ends i.e the ECM and the injector also checked if it was shorted with ground somewhere but it was not.
I started to doubt the ECM

@ "love_soul30"

Have you found the issue man?

Hello
Yes I did. It was a broken wire from the inside. The problem is fixed.
Thank you for everybody here.

Hello

Where is the broken wire in your passat and what color is it?