MembersPage/MarcellGal/PowerAndTraction/PnpHarness (2007-04-21 10:55:00)

Subpage of MembersPage/MarcellGal/PowerAndTraction, the implementation of PlugAndPlayMotronic on Audi 200 quattro 20V turbo

The differences between

is trivial. If one can make either, he can make any other work.

However, there are a few details about the car that would be nice to have in the PNP install.

Anyone aware how the motronic55 ECU notifies the

in the Audi 100/200/S4 ? Likely the same in the 80/90 chassis.

MembersPage/DaveHartnell might know after 2007-03-12, when his factory manual set with extensive wiring info should arrive.

- The manual shows that a potentiometer<variable resistor> described as a fuel consumption sensor in the Fuel distribution head/flow meter measures the position of the plate, just like a TPS. IT's a 3 wire sensor that connects directly to the gauge for its power, ground and signal

The gauge cluster has some adjustment for fuel consumption trim between 0 and 15% is described in the manual using some switches or a resistor on the cluster itself.

I can take measurements of the Sensor with the throttle plate closed, at idle and at WOT if they are useful.

Speculation and experience

MembersPage/EmilLarsson knows the bmw's do some strange calcs inside cluster, for fuel consumption: the gauge starts moving when hooking up tachometer.

MembersPage/SamiKorhonen : some guy used 0-5V signal what his old KE-jetronics MAF gave to his computer.

In fact the tach signal, and a 0..5V signal should be all that is needed. We just have to find out where the 0..5V signal connects, if it's MAF or MAP signal, and if it works like we think ;-)


Solved. CLT and MAT strange measurement values on an Audi AAN (20VT) engine

Measuring against motronic pin 30 (sensor GND, mislabelled in our s2central doc), it's all fine !!!

Admittedly, we don't know for sure that CLT and MAT were operating on this engine. The factory ECU often ran awfully rich.

It would be good to know, which is the CLT sensor for the ECU