1998 Johnson Evinrude "EC" 150, 175 FFI Service Manual, P/N 520211, Page 160Get this manual
Operation in UP Mode
When the trim-up button is pressed, Relay is energizedRelay connects the blue trim motor wire CD to the battery B+The green trim motor wire connects to ground through Relay 11When the button is released, Relay blue wire returns to grounded rest positionOperation in DOWN Mode
When the trim-down button is pressed, Relay 11 is energized and connects the green trim motor wire to B+The blue motor wire CD remains connected to ground through Relay 9When the button is released, the green wire returns to grounded rest position
Power Trim Electrical Troubleshooting
Before beginning this procedure: Be sure battery is in good condition and fully charged and connections are clean and tight Remove key and emergency stop clip from ignition switch
INote "OK"
indicates full battery voltage on all tests unless otherwise notedConnect meter BLACK lead to clean engine groundThe BLACK meter lead should remain hooked to ground on all tests unless otherwise specifiedPower Supply