MembersPage/PeepPaadam/AudiAFourTurbo (2006-10-13 15:49:19)

Car is from year 1997. It sports turbocharged 1.8liter inline four, has passive coil-on-plug ignition system and crank triggers: primary VR (60-2 wheel) and HALL as cam sync.

Also it is equipped with strange throttle body. Perhaps it's one unit TPS and idle valve? I took some measurements also: two pins have 5v supply, one pin has 12v supply and one pin had something like 10.x volts supply (measured when engine was not running, only ign. was switched on.

That's what it looks like.

A4TB.jpg

Looks like a newer version of InTake/ThrottlePlates/VAGElectronicThrottle


I connected all the sensors to VEMS unit and everything worked fine (including TPS) but the stock VR sensor. I put the 60-2 wheel specs all correctly (check the config : MembersPage/PeepPaadam/AudiConfig )but no rpm signal. When i switch from multitooth to coil-type, it shows 100rpm every crank rotation like it should (one trigger event per rotation) but in multitooth mode...nothing.


I might also innstall VEMS on such a 20vT so I'm curious #HansK:

A: Cam sync is one window Hall sensor.

Triggering problem serialnr ? orderid ?

Tried different settings but still nothing. Only in coil-type, it shows 100rpm like it should with one trigger event per rotation.

I tried to connect unit no. 620 (which was ordered with VR) and everything was ok: very good trigger signal and rpm reading!

Connecting HALL sensor wouldn't give ANY reading (even in coil-type).

Easy to test with soundcard output ElectronicDesign/TriggerSignalGenerator.

v3.x serialnr 637 was ordered with HALL, right ? Try to write orderid, or approximate date too. If you unclamped, take photo of the trigger section (middle of the board).