SM4 Manual
by
MRM-Racing
V3.0
16
Throttle Range Learning
With 1.09 chip TPS learning can be set to automatically or manually check software under
menu I/P analogs / Throttle.
The ECU is equipped with an automatic adaptive learning function that simplifies the procedure
of throttle position sensing. Setup is much simplified, not requiring any diagnostic aid, calibrator
or laptop computer. The procedure is as follows:
1. Ignition switch on, engine stopped.
2. Disconnect throttle position electrical connector for at least 20 seconds.
3. Reconnect throttle position electrical connector.
4. Ensure that throttle is closed for at least 5 seconds.
5. Fully open the throttle for at least 5 seconds.
New limits of throttle travel will have been learnt and stored in the ECU during the above
procedure. Additional ECU functions ensure that throttle stops and sensor wear are
compensated for over the life of the engine. The above procedure need only be repeated if the
butterfly / sensor assembly is serviced or replaced.
You also can configure the TPS input under
I/P
Analogs
in the software.
Ignition Modules
The ignition modules should be mounted on a flat surface to ensure proper heat dissipation and
avoid stress on the wiring connections. It is also important to prevent the modules overheating
by mounting it away from hot components such as exhaust manifolds and turbochargers.
Follow the wiring for your modules at the end of this manual and note that smart modules and
dumb could have different pin outs. Locate the ignition wires in your harness, using pins, crimp
the pins onto the appropriate wires and insert them into appropriate locations in the igniters
plug. But do not connect it to the igniters until the ignition settings in the ECU are verified by
connecting the ECU to a computer with Autronic software.
The SM4 do not use same output sequence as SMC/SM2, the SM4 always start with output
number 1, after that in number order if more than one ignition output is used.
SM4 pin
Name
Colour
Pin 21
I/P TPS
Orange
Pin 22
Sensor GND, shared with other sensors
Black
Pin 36
O/P +5v TPS Supply
Red/white