The ECU supports both Active and Passive Coils.


Active Coils usually require a low current, 5V pulse from the ECU to cause them to "dwell" and when the pulse turns off, the coil fires. These are typical of Coil-On-Plug type coils or external igniter. The coils usually have 4 or more connections on their connector.


Passive Coils (driven by an IGBT Low Side High Current Drivers) are simple a coil of wire that receives 12V from the cars electrical supply, and the ECU switches the coil to a ground connection (much like a relay or injector) and when this ground connected is made, the coil dwells, and when the ECU "opens the circuit" the coil fires.


Wiring of these coils differs depending on their type, and you will need to set the correct ignition drive type in the Output Settings or the Ignition Driver to either Active or Passive mode.


The following sub-sections detail the different wiring set-ups for different coil types with the ME442.



Please note DO NOT USE resistor-less or low resistance plugs/leads. These can damage both coils as well as ignition channels.