Mercury Mariner 200, 225 Optimax Outboards Service Manual, 90-855348, Page 303Get this manual
ELECTRICAL SYSTEM TROUBLESHOOTING CONDITION OF TRIM SYSTEM ATrim motor does not run when trim button is de ressed
PROBLEM
1 245 678
PROBLEM
1Battery low or discharged2Open circuit in trim wiring3Wiring reversed in remote control4Wire harness corroded through5Internal motor problem (brushes, shorted armature)6Blown fuse(s}7Trim switch failure8Verify solenoids are functioning correctly