That year seadoo has a Electronic module and not a MPEM,(Multi Purpose Electronic Module). The main difference is that the electronis module does less thanthe MPEM. In any rate, here is the complete tests for testing the Safety Lanyard and the Start /Stop switches;
Check the continuity of the Safety Switch Lanyard. It is normally "open". The color codes of the 2 wires are Black and Black/Yellow. These feed back into the electrical module box. The Start /Stop switch is normally "open". The color codes of the 2 wires are Black, that goes direct to ground, (to stop the engine), and the Yellow/Red that goes to the electrical module box. Check the continuity of this switch too.
If we can do anything else let us know.
Karl