Help with wiring: AAN VS 3B TPS? Problems

[Jonas_R]

Ok,

So today I tested my brand new AAN/ADU/ABY TPS and it only shows 3.8Volt at WOT.

Now I have converted my 3B ECU to AAN ECU, but something must be different in the wiring used.

Because with the 3B TPS then I see 4.8V, so I'm thinking that something must be different with the wires going to the TPS.

Any other suggestions would be nice....

Because this is strange.

[Jonas_R]

So problem sorted, turns out that the crap Multimeter I was using somehow effected the Voltage so it showed wrong readings.

[UrS4boy]

I know you got it sorted (multimeter issue) but I thought I would add this throttle position potentiometer/idle switch info link:

http://forums.audiworld.com/showthread.php?p=18930483

The TPS is common to most Audis from 1989 to 1999, i.e. AAN TPS = ABY = ADU TPS

EDIT: Apparently the 034 133 154 F 3B TPS is different.

[Jonas_R]

There are different part numbers on 3B vs. AAN/ADU/ABY TPS, so are you saying they are the same?

S2central.net list that they are not interchangeable.

[UrS4boy]

There are different part numbers on 3B vs. AAN/ADU/ABY TPS, so are you saying they are the same? S2central.net list that they are not interchangeable.

Rechecked info with Kate. She says 034 133 154F = 3B whereas
078 133 154 = AAB =ABY = ADU (Ref: ACOQ, Illustration 133-72, items 2, (2).

So I stand corrected about the 3B TPS (Believe Paul N)

Bugga.

[Jonas_R]

Question is what the difference is. I was running a 3B TPS on my 3B which is converted to AAN ECU. I'm having some problems with WOT code not showing in VAGCOM so I thought it might be down to different TPS. But I guess I will know that tomorrow when I fit the newer AAN TPS.