Mercury Mariner 200, 225 Optimax Outboards Service Manual, 90-855348, Page 95Get this manual
Commander 2000 Key Switch Test 1Disconnect remote control wiring harness and instrument panel connector2Set ohmmeter on scale for the following tests3If meter readings are other than specified in the following tests, verify that switch and not wiring is faultyIf wiring checks ok, replace switchIMPORTANT: Key switch must be positioned to "RUN" or "START" and key pushed in to actuate choke for this testBlKBLACK