hi all,
I have gone, sort off the same way that MrFuel has gone COPS.
Im using 1MZ cops which is the same as the altezza cop from my understanding.
these are connecting to a EMS8860 ecu, and have setup to do seq firing?
We had connected up as follow
pin1 Grd
pin2 Trigger
pin3 Grd
pin4 +12V
we tested the setup with just a battery first, wired up the cops an tested with spark plug attached, it works great.
With our harness we made up, pins 1&3 are connected to grounded, pin4 is feed with +12v from the fuses box, and pin2 is back to the ecu for pulse triggering, that is a total of 10 wires (1Gnd,1+12v,8Ecu).
In our tests we used +12v to trigger the cops, i did read somewhere that they can be triggered with +5v but i have not tested this yet, but will do.
MrFuel, You may need to check the way you have wired up your harness for the cops, and contact your ecu support line to see if they support this method with the model you are using?