Crank no crank/start connector wire no power

Hi,

Just so I understand, when you measure voltage on the crank sensor, you have no voltage on either wire with the key on?

If this is the case, then yes. The PCM supplies voltage to the cranks sensor and as the engine turns it picks up the high and low spots of the crank wheel and sends the voltage signal back to the PCM so that it knows where the position of the crankshaft is. Without this, the engine will not start.

No, you cannot bypass this to get the engine to start because if the PCM does not know the position of the crank shaft then it doesn't know when to fire the spark plugs so that the engine continues to run.

https://youtu.be/dCjmRL3p4Cs

Please let me know if I misunderstood something and we can go from there. Thanks

I am sorry. I don't understand what has power and what doesn't. The crankshaft sensor itself has power but the female connector of the crankshaft sensor does not have power? The part that you are pointing to is your relay and fuse box. The entire thing does not have power or just the one connector that you are pointing to does not have power? Is there no power on all the wires in the connector or just one of them?

Okay. I think I am starting to understand. If all the wires in the connector that you are pointing to and the one I circled from your picture do not have power, then you are going to have to unplug that connector and trace where it comes from. Unfortunately, in all the fuse box breakdowns I have it does not label that connector which means it is either coming into the fuse panel to supply power or more likely those are your feed wires from the fuse panel. If you find that these are the wires going from the fuse panel to the components, then that fuse panel is probably your issue.

However, I am nervous that we are not on the same page because this is not common for an entire connector cavity like that to fail. This would explain why the vehicle does not start because I am sure there are all sorts on necessary components on that connector.

IF this is the case, the way this works is, battery power comes into the fuse box and is branched off into the proper circuits, and then the power is run through the fuse and then sent out to the component through one of those wires. If all the fuses are good but you have nothing coming out of that connector, then the connection inside the fuse box that connects the fuse itself to the wire has failed. If you remove that connector you will see the male end of the connection. Those are connected to the fuse via the fuse box.

Hopefully this makes sense. Thanks

No need to apologize as that is why we are here. However, we do need to get a new post only because this is not the same vehicle.

The reason is, these issues are sorted by vehicle and then by issue so if we help you solve this issue here, then all others that search for Audi issues will not find this under this different vehicle. Our purpose here is to not only help you but when we help you solve your issue, you will be helping all others in the future when they follow along. So, we want them to be able to find it.

https://www.2carpros.com/questions/new

Sorry for the inconvenience but when you get this posted we will get someone on it.

Thanks