Aftermarket ECU with Inbuilt Igintion drivers - 1NZ/1ZZ COPS ?????

[Futo_gt86]

Yes this is clear.


As stated above the LT/MT wiring diagrams are wrong for my application
I have the Yellow, Yellow/Black trace, Orange & Orange/Black trace wires coming straight out of the for ignition.
I also have Yellow, Yellow/Black trace, Orange & Orange/Black trace coloured wires coming out for the injectors - Different block on ECU
The ignition drivers are as per 13B diagram (no trail or lead off course)

I originally tried connecting these to the IGT and set the ign output to -ve - The result was no spark what so ever.
This was because I did not realize the ecu was direct fire.

[Skylar]

Derp.

Wire a 5v pull up for the spark outputs. Those drivers are sinks only.

When you mentioned they were "direct fired" it hit me that no voltage/current is outputted from the driver. And they are capable of taking 12v at big current.

My feeling is that those diagrams should have the ignition output set to +ve. But if that's how microtech designate "going high" I would leave it on -ve.

[Skylar]

Also, when I say 5v pull-up, I mean 5v pull-up via 10k ohm resistor to each signal line.

I would confirm that with microtech but there's no other way I can think of doing it. I'd buffer the line too just to eliminate any chance of crosstalk, not knowing enough about electronics.

[Futo_gt86]

Off to Jaycar I go.
I'll let you know how it works out.

Thanks Skylar.

[Skylar]

Would confirm that number. The pull ups on my CAS inputs (Nissan) are 330 Ohm at 5V. I've seen tach pull ups at 10k Ohm on a 5v line too. I don't know enough about electronics to be able to tell you what you need but I would start high.

A quick look around the net says 10k is fine, wiki says 1-5k is also fine and depends on the electronics being driven. The value of the resistor will be determined by the input impedance of the coil circuit. I have no idea what's on the other side of the coil's connector, whether it's an opto or drives straight into a transistor. Basically, start high and work down. I feel if 1k doesn't do it, contact microtech. or just sell it and get a vipec. lol