Testing coils on a coil over plug system?

[art leong]

Originally Posted by buzzinhalfdozen

Art, not sure I would spend any time looking at Crank or cam triggers, as they would just make the engine quit no matter what. Did you get your spark checker if so do you have nice blue spark from all coils? I asked before about MAP sensor... what does it read? Do you have any tuning tables that use the MAP input to change fuel or timing perhaps coil on time based on MAP or fuel enrichment based on MAP sensor? Can you "see" in real time what timing and pulse width is being commanded by the ECU?Also can you view your Crank sensor count in real time, sometimes referred to as Wheel dbug counts?

The ecu is programmed to use the map sensor and the tps to change timing and fuel.
The map sensor is in the ecu. It has a calibrate function, and it matches the internal bap sensor. According to the datalogs the map reading changes seem to be right. I can hook up a seperate map sensor. I don't know is I have a wheel debug option.
I just checked the wiring for the coils and it seems to be correct But I did notice that I get 11.8 volts at the pos side of the coil (ignition on) when I get 12.5 at the battery. This is going to require more inspection. This is without the fuel pump on only the ecu and (heated) wideband O2 sensor is energized. I'm wondering why an ecu takes that much voltage when I might try to disconect the O2 sensor and see what happens.