2004-2009 Suzuki LT-Z250 Service Manual, Page 235Get this manual
ELECTRICAL SYSTEM
Step 1) Measure the starter relay voltage at the starter relay connectors (between YBand BW -) when the starter button is pushedIs the voltage OKYES Go to Step 4Faulty ignition switch Faulty engine stop switch Faulty neutral relay Faulty neutral switch Faulty starter button Poor contact of connector Open circuit in wire harness