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Passat 3B - Dash 3B0 919 890 J
14-09-2014, 10:21 AM,
Post: #1
ZVW  Passat 3B - Dash 3B0 919 890 J
Hey all !

I just bought a new used dash for my Passat 3B '97 (MJ '98).
The part number of the dash is: 3B0 919 890 J, thus a non-CAN with big display. My car has only got the "normal" dash with the small display and I want to upgrade it now.

I already knew that the previous owner dismounted the dash for whatever reason, so I dismounted it again, inspected the circuit board and saw that the previous owner seemed trying to solder something.

In my holy opinion, there is some element missing...
Does anybody of you have the wiring diagram / circuit board assembly?

Greets, Daniel.


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14-09-2014, 16:55 PM,
Post: #2
RE: Passat 3B - Dash 3B0 919 890 J
That chip with green wire is ok if it is missing. That green wire i don t know for what is it! The second chip missing is npn silicon tripleton power transistor TFK36403 i think.


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Reputation: +1 - volavka [+1]
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[+] 4 users say Thank You to pioan for this post
14-09-2014, 19:43 PM,
Post: #3
RE: Passat 3B - Dash 3B0 919 890 J
Pioan, you are just awesome!!! Thank you very much!

I don't know either why there is soldered a green wire. But it seems to be professionally soldered, like if they forgot to connect a wire when designing the circuit board, or if there was simply no space on the circuit board left. I did not think much about this wire, because in my apprenticeship as an electrician I remember one teacher saying that this could really happen, even in professional companies.

By the way... do you know the function of the chip with the green wire? Because you say that it is okay when it is missing.

And according to the missing TFK36403 ... I just spent one hour of searching a similar component but failed. Do you have an idea?
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15-09-2014, 21:08 PM,
Post: #4
RE: Passat 3B - Dash 3B0 919 890 J
That megamos res crypto is for immobilizer. I cannot find any equivalent for TFK36403 and datasheet for it!
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