SM4 Manual
by
MRM-Racing
V3.0
12
d. Connect idle speed engine if used; See wiring at end of manual.
e. Connect any other auxiliary outputs like thermo fans, error light, shift light,
anti-lag , boost control valves and more.
6. Power and Ground:
a. Connect all ground connections to a central location, but do not ground the CDI (if
used) to same location as the ECU.
b. Connect the big red power cable direct to the battery through a 30 amp fuse,
make sure the wire has the fuse near the battery or is well protected from damage
to its insulation. Short circuits on this wire can lead to fires.
7.
Ensure the ignition modules or CDI and fuel injectors are disconnected at this
stage.
8. Connect the ECU to the loom and connect a laptop computer to the serial DB9 connector
(RS232). If using a USB to serial adapter make sure the comport are set up correctly in
the Autronic software. Proceed to the
Software Basic Setup Guide.
WARNING:
To avoid damage to ignition components never connect the ignition modules
or CDI to the ECU until the ECU is fully configured. Never connect fuel
injectors until the ECU is configured, otherwise the engine may flood with fuel.