MembersPage/KevinBlack/Audi (2008-12-03 04:26:58)

Update: Project is active with a new customer.


1991 Audi 200 20v turbo,(3B)


VEMS Motronic Audi 3B ECU Configuration

MAP connection 400kPa onboard - brass nipple

Flyback - 30v Diode

LCD - Connector through endplate (DSUB9 on endplate or flying loom)

EGT - Flying Loom through endplate

Knock - Via Motronic55 Pins

IAT - Audi PTC Sensor (430 Ohm pull-up)


Custom Pinout Information

Ignition Setup - Flying Lead


SSC Pin - Flying Lead - WB02 Pin


Suggestion - make WBO2 wire colors match the LSU4.2 sensor

SSC - Color - WBO2 Pin


For 3B, specify choice for the extra flying loom cable - often SSC6 connector

Kevin said SSC6 not needed, he will supply connector. So we can use more than 6 wires. Suggestion:

5 IGBT Outputs - IGN Output - EC36, custom connector

2 Analog Inputs, custom connector


General Motronic55 information

  • Best to have 5 IGBT wires bundled together (away from analogs) due to interference?
  • Will the 2 analogs have internal pull-up in order to be used with Launch and Shift-cut?(I measured 8.4k)
  • Does the IAC valve still work when tps threshold is used for Launch control activation?

MembersPage/TeppoKalske page bottom has the standards for SSC6 female pinout:

Or "your custom pinout you like, eg. 4 outputs and 1 analog input" and 1 GND.

As you see, the "AAN ECU extra connector pins" has 3 analog inputs, we use one brake-light switch mounted under clutch (and a series switch that can disable it) to pull down (activate) the (shared) input for shiftcut and launch.

When activated with TPS < iac_tps_threshold launch is activated (TPS can be pressed after activation). Otherwise shiftcut is activated.

In any case, one must specify his extra-connector pinout preference for a 3B engine.


General Audi Information

Pic of ECU Connector:

ECUconnector.jpg

3B Wiring Pinout:

http://www.s2central.net/motronic_pinout_3B.html

3B Wiring Schematic:

3B_ECU_Schematic.jpg

Audi 3B Information:

http://www.s2central.net/motronic_02.html

http://www.sjmautotechnik.com/trouble_shooting/20vboost.html


OLD SETUP USED FOR REFERENCE - DO NOT USE

IGNITION out and analog inputs

Motronic55, Pin 1 is Stepper D, EC18 Pin 11

Flying Lead (No connector, I will supply)


analog input usage: Launch Control / WOT Shift Cut

Flying Lead (No connector, I will supply)

Possible extra feature:

- Air Conditioning / Radiator Fan "Idle-Up" Input