Piwi diagnostic program for Porche Taykan

[whitex]

Checking them all is a brute force approach. You could start with the buses identified by PIWIS, find those physical wires, and either check their ends first for any sign of damage, then do something like the debugging in the video of fixing the wipers.

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[carlos vilarinho]

Checking them all is a brute force approach. You could start with the buses identified by PIWIS, find those physical wires, and either check their ends first for any sign of damage, then do something like the debugging in the video of fixing the wipers.

I honestly think that the problem lies very close to the BCM1 module, because for the piwi to indicate that there are disconnections, I have already looked at the plugs and electrical cables that fit into the module and superficially I don't see anything out of place or ripped, spoiled etc…. Obviously, since the module is in place it is difficult to analyze, wouldn't it be a good idea to disconnect the batteries again and simply unplug and remove this module and see if the module plugs are corroded, etc.????? ?because the windshield wiper, the electrical connection to the windshield wiper motor comes out of this module or goes to this module, as well as the rain and light sensor, the window camera which I am sure is not being powered by energy ,because I don't have ACC (strange but I have lane keep assist),... But what's even stranger is that if it's a module that isn't working then how is it that the module broke... because it seems to me that everything happens under the dashboard,Another thing I find strange is if I had a short circuit in the car... why don't I have a single blown fuse in any of the fuse boxes...???!!

 

[whitex]

Your idea is as good as any. You may have a better intuition if you know where the fire was for example, or as you play around with it. Check not just for corrosion, but also bent or missing pins, broken or worn (or burned) wiring, as well as ECU sockets as well. Not even sure you need to unplug the batteries, as you're not touching anything high voltage I presume. One technique actually is looking what new errors pop up when you unplug an ECU (usually will be in the faults of the ECUs on each end of the connection), maybe don't live unplug things going to the motor controllers - they should be safely designed, but who knows, plus you don't seem to have issues with motor controller. Another technique for looking for broken interconnects is how the guy did in the video.

 

[carlos vilarinho]

Your idea is as good as any. You may have a better intuition if you know where the fire was for example, or as you play around with it. Check not just for corrosion, but also bent or missing pins, broken or worn (or burned) wiring, as well as ECU sockets as well. Not even sure you need to unplug the batteries, as you're not touching anything high voltage I presume. One technique actually is looking what new errors pop up when you unplug an ECU (usually will be in the faults of the ECUs on each end of the connection), maybe don't live unplug things going to the motor controllers - they should be safely designed, but who knows, plus you don't seem to have issues with motor controller. Another technique for looking for broken interconnects is how the guy did in the video.

I think that at least the 12 V battery (the negative pole should be disconnected) so that I can disconnect the module plugs without running the risk of any problems ?, for example, the windshield wiper on my car could also have a cut wire (how can I analyze if I have one)? power in the plug with the voltmeter..??) so that I can do as the guy in the video in the Audi A3 I would have to have the same type of equipment available, but I don't have that type of equipment, I'm doing things that I've never actually done before …?! In the case of the car fire, the fire did not reach the door panel... but one thing that I find quite strange is that they apparently used powder to put out the fire on the door... I have traces of white powder on the door rubbers... and very little but there is here and there

 

[carlos vilarinho]

Your idea is as good as any. You may have a better intuition if you know where the fire was for example, or as you play around with it. Check not just for corrosion, but also bent or missing pins, broken or worn (or burned) wiring, as well as ECU sockets as well. Not even sure you need to unplug the batteries, as you're not touching anything high voltage I presume. One technique actually is looking what new errors pop up when you unplug an ECU (usually will be in the faults of the ECUs on each end of the connection), maybe don't live unplug things going to the motor controllers - they should be safely designed, but who knows, plus you don't seem to have issues with motor controller. Another technique for looking for broken interconnects is how the guy did in the video.

Whitex, where do you think I can get the electrical diagrams for this car…?? It seems to me that this car is the same as yours…..do you have this information…???

 

[whitex]

Whitex, where do you think I can get the electrical diagrams for this car…?? It seems to me that this car is the same as yours…..do you have this information…???

I thought you got PPN access.

 

[carlos vilarinho]

I thought you got PPN access.

I thought you got PPN access.

Yes, I have requested access twice. The first time I sent the terms of use with my details, it seems that the form with the terms of use was not correct because the terms of use I sent in the first place were the U.S.A version, and they sent me a link. to choose the terms of use related to my country, fill it out again and resend it and I already resent it yesterday, now I'm waiting for them to send me access. The Terms of Use for Porsche Partner Network are specific to your market or country.

 

[carlos vilarinho]

I was seeing the errors here, and thinking there is some chance that these communication problems between the modules are related to the replacement of the 12 V battery, this is because I have information that the 12 V battery was replaced by the Porche dealership 1,500 km ago, the battery you may not have or may cause a strange power cycle, low battery voltage ..etc… changing the battery may cause errors … (U1122300 and U112100 are generic non-signal and message missing errors…) literally and almost all modules will present these two errors…

 

[carlos vilarinho]

It seems incredible but all the modules affected by some error are located in the panel area (Ac control module, chassis drive assistant, bcm1, ESP 9 Bosh, Dash Board LG, windshield wipers) and as incredible as it may seem I have both blind radars spot the left and right with the databus message missing error, two rear view mirror sensors…,) …I assume that something must be wrong nearby, under or on the side of the car's dashboard…The big question I ask here is where and how to start,,,?

One of the things I didn't check before when I check the fuses was the relays...just out of curiosity, the windshields wipers have a relay...

 

[carlos vilarinho]

It seems incredible but all the modules affected by some error are located in the panel area (Ac control module, chassis drive assistant, bcm1, ESP 9 Bosh, Dash Board LG, windshield wipers) and as incredible as it may seem I have both blind radars spot the left and right with the databus message missing error, two rear view mirror sensors…,) …I assume that something must be wrong nearby, under or on the side of the car's dashboard…The big question I ask here is where and how to start,,,?

Let me add some information here that may be important, but when I bought the car they gave me an original key, they claimed they didn't have another key for the car, in other words I only have one key for the car...!

 

[carlos vilarinho]

I thought you got PPN access.

 

[carlos vilarinho]

You won't believe this, when I bought the Porsche the driver's side seat had a little burnt on top due to the door hat, as such and here in Poland I bought two new front seats identical to the originals, now as I was checking the wiring that connects the two front seats I noticed that under the driver's seat was the seat mat sensor. By chance I went to check with the original seat and discovered that the seats were from an identical car but that had come from the UK, that is, I would have to remove the seats again and make the entire exchange of the lower part including the electrical wires from the driver's side to the passenger's side, in the meantime I called the guy who sold me the seats and asked where the seats came from if they had come from a car coming from the UK to which he replied probably... yes... I was worse than pissed off and asked him why he hadn't told me this at the beginning... didn't respond as is obvious!!!! Now I'm going to pass everything from one side to the other and connect the seats again, now I understand in the diagnosis that the passenger seat sensors are not being manufactured... let's see what happens...

 

[whitex]

Have you considered putting the original seats back for now, until you resolve all other issues with the car? This way you're dealing with one problem at a time - fire damage vs. using LHD seats in a RHD car.

 

[carlos vilarinho]

After this diagnosis that I will leave here, it is almost certain that the problem in the car is the CAN BUS (Can lines) Can high or Can Low one of them for sure or a short between Can low and Can high.....!

 

[carlos vilarinho]

This video can be a good start for a diagnosis

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