Mercury Mariner Outboard 225 3 Litre Service Manual 1994, Page 192Get this manual
Troubleshooting theUp" Circuit (WhenDown" Circuit Is OK) ConneC1 Voltmeter RED lead to Point
10 and BLACK lead to groundDepress the "Up" trim bunon
Battery Voltage Indicated:
No Voltage Indicated:
Connect Voltmeter RED lead to Point 3
There is an open circuit in wires (BlUEWH ITE, PURPLEWHITE, PUR Pl E) betweenUp' solenoid and trim
Battery Voltage IndicatedConnect Voltmeter REO lead to
No Voltage Indicate d:
Point 6Depress "Up' 'rim button