Yamaha 115-225 HP Outboards Service Manual, Page 249Get this manual
I 0850050
POWER TRIM AND TILT SYSTEM
POWER TRIM AND TILT SYSTEM
(A) The motor will not turns over
NO Is the battery in good condition? NO Are the battery cables connected?
Recharge or replace(P3-21)
Are the battery terminal-connections tight? NO
Is the control-switch cable connected?
Connect them(P3-21)
Tighten (P3-21)
Connect it(P6-6-8-118-33)
NO Does the relay make an operating sound?
Check for broken lead or disconnection(P8-27) GOOD-U NO GOOD Replace or connect