prschmn

Durametric and PIWIS showing a zero value. No codes. Anyone see this?
I am seeing actual values so suspect the ECU may be bad

systemsc

Very unlikely! When did this occur & what's been done to engine? Mod's done to the DME at some point? Is it the 5 connector DME (egas)?

prschmn

Thank you. I know it's unlikely but have to wonder. The car was running fine-had some track days and then abruptly not. Removed the engine,verified cam timing.
Replaced both sensors and the oil seal rings and retimed but that had no effect. It was flashed but many years ago. And yes the five plug unit.

De Jeeper

Next step is to check continuety from the plugs to the dme. Then with a magnifing glass look at the dme pins. I had to replace all my o2 pins in the harness plug because they were spred. If all that looks good send it all out to ecudoctors and have them verify that its all working.

prschmn

Thank you though since I am seeing actual vales I kinda doubt the connections are bad but----

systemsc

The camshaft actuators require 12V, and DME ECM grounds the other pin. The wiring needs to be checked to DME ECM. Have you used a scope to check the signal?

De Jeeper

Also what car r u working on? U posted in both the 996 and the gt3 sections and u have given us zero background info?

prschmn

Power supply shows 12 volts. But scope shows what seems to be a fixed pulsewidth at about 2.5 volts and doesn't change with RPM.

prschmn