Check Engine Light

[4C FED]

Does the ECM provide a ground signal or a 12 volt signal to turn on the Check Engine light?

I need to find out so that I can rig it, to pass SMOG.

Thanks

 

[V6 Kompressor]

Hi Rick, the ecm grounds the circuit, a brown wire with a white tracer....

 

[4C FED]

Thank you, very much.