Galaxy WGR AFN won't turn on

Hi.

It concerns the 1999 AFN (American Forces Network) channel in my ex-girlfriend's Galaxy device, which I also use regularly.

I used it yesterday, drove it out this morning to get some bread, and then suddenly it wouldn't start.

I quickly switched to a different relay (109), as I always keep one in the car, but it didn't work.

Selected, no error entry.

Then I had the engine speed displayed in the measurement blocks, but it remains at 0.

Connected other working crankshaft position sensors and simulated a speed using a screwdriver; this resulted in a reading, but when the crankshaft position sensor was changed, there was no reading, and the car won't start.

I'm completely at a loss right now, and it's currently minus 6 degrees.

By the way, the starter motor is spinning fast enough, and the battery is in good condition.

Could the problem be related to the flywheel?

Thank you very much.

Hi,

I would check if (with brief logging) the timestamps for the measurements are consistent and regular, without any gaps. Then you can safely rule out the engine control unit and its power supply.

Loosening a retaining nut on a nozzle holder while cranking the engine can help diagnose issues; if fuel sprays out, the diesel supply is likely working correctly.

If nothing is coming out, check the supply line and solenoid valve of the shut-off valve on/at the ESP. It could also be clogged at that location.

Is everything okay with the valve timing? When diesel fuel is injected, after a period of idling, white diesel smoke emerges from the exhaust.

Best regards, Rainer.

Hi Rainer,

Thank you for the quick response. I'm all done for today; I'm going to the Christmas market in Fulda. I don't have any helpers for the activities today anyway.

Tomorrow, after work, we'll continue.

What bothers me is the lack of a tachometer signal. My A4 provides one when the engine is revving, even when the starter is engaged.

Best regards, Michael.

Update: Voltage is reaching the shut-off valve, and the valve is switching, but no fuel is coming out of the open fuel injector line.



I have my A4 AFN parked right next to it, and as I mentioned, it outputs a speed signal when the starter is engaged, while the Galaxy shows everything as 0.

I've also checked all the relevant fuses, and they are all intact.

Wasn't there something about a minimum speed requirement for starting? If the MSG (Message) returns "0", it might also be displaying "0". And then, no fuel is reaching the injectors.
Now that the simulation is working, we can start considering possibilities like missing mass or even a faulty encoder wheel.
hg
Herbert.

Hi Herbert,

I've also been thinking about this issue. I've ordered an endoscope to take a look at the crankshaft and the area behind the starter motor. I have an AFN engine from an A4 as a reference to compare it with.

I checked the wheel on the crankshaft using a mirror and an LED lamp, and everything seems to be as it should be.

While reading the measurement blocks, VCDS crashed upon startup and the connection to the MSG was lost.

I'm at a loss for words right now...

I just stopped working on it, the car is still outside, and... (followed by some symbols that I can't interpret).
It started.

Where should I start now?

Power supply for the engine control unit, general wiring harness .

Hi,
The error memory was successfully read. No entry?
hg
Herbert.

It might also be worth checking the mass connections from the engine control unit and in the wiring harness (by measuring resistance).

I would expect a resistance of less than 1 Ohm, unless there is corrosion in the wiring harness or connectors/ground points.

Herbert wrote:

Hi, The error memory was successfully read. No entry? hg Herbert

No entries...

I woke up very early this morning, around 3:30 AM.
Downloaded 750 pages of circuit diagrams from a Russian website, found the relevant sections, drew a small diagram, but this morning, before work, I found a ZAS (ignition module) that I had put away, plugged it in, and the engine is running again.

It's likely that over 500,000 contacts within the system are no longer valid, which is why the MSG (Message Service) has been disabled.

Of course, I don't know whether Ford incorporated its own ideas into the engine control system for the VW AFN engine.
Based on the documents from my deceased Audi with the 1Z engine...
"It should be detected by the MSG (MSA15?) at the speed sensor, and preferably with a higher sensitivity."
- an implausible signal (possible cause: encoder disc, faulty encoder, shielding);
- No signal (possible cause: disconnection, short circuit, faulty sensor).
However, nothing is being recognized. Perhaps the MSG didn't even detect the attempt to start.
What error codes appear in the fault memory when you disconnect the camshaft sensor (a test performed with the ignition on and waiting for 1 minute, and then again during a start attempt)? Does it glow (if applicable)? (Disconnect the temperature sensor?)
hg
Herbert.

Edit - ok, too late.

Thank you for the feedback.