MoTeC Snowmobile Plug-In ECU - Manual (Page 41)

MoTeC Appendices 33
Note 3 – Speed
The Ski-Doo vehicles have a speed channel in the Dash which is
transmitted to the M400 ECU via the STC device. For accurate speed
measurements, MoTeC recommends the use of a GPS system. MoTeC's
5 Hz GPS-L5 (#41305) can be wired directly into the ECU's RS232 receive
port.
The existing harness is pre-wired for a GPS device if preferred. However
the physical wiring must be changed to suit:
Speed Input mode M800 pin B18
From Dash (standard) From connector S02
From GPS (option) From connector G02
Output Test Function
To test if all outputs are correctly wired to the relevant injectors and coils,
the ECU Manager software has an output test function available (on the
Utilities menu, click Test Outputs).
For protection of the Ignition coils, the IGN4 ground signal is routed via the
Fuel Pump Relay. If you wish to test Ignition coils 1 – 3 in a Ski-Doo
installation, the Fuel Relay control pin must be powered, by removing it
from the M400 ECU plugs and jumping to +12V.
1. Unplug the M400 ECU connectors.
2. Press the single white tab on the underside of the plug until it
clicks to unlock the pin locking plate from Connector A (white
plastic inserts in the plug),
3. Extract pin A01 (white 18AWG) from the rear of the connector
using firm pressure.
4. Press the dual white tabs on the top side of the plug until it clicks
to lock the pin locking plate,
5. Re-insert the ECU plugs into the M400.
6. When ready to power up the ECU and test the Ignition outputs,
jumper the A01 wire to +12V.
Once testing is completed, reverse the above procedure to re-insert the
A01 wire into the M400 connector.