Re: 1978 Evinrude 115 tilt/trim goes up but not down
Im with Ezeke on this one. Using his helpful diagram, go through the following steps and let us know what you find.
1. Move red meter lead to point E3 in junction box, push trim switch in the down position. Battery voltage should be indicated. If trim motor does not run, test motor.
2. If no voltage is indicated at point E3, move meter red lead to trim switch at point E4 and meter black lead to point G1. Push trim switch in down position. If meter indicates battery voltage, lead is open between point E3 and E4.
3. If no voltage at point E4, move meter red lead to point E5 in trim switch. If battery voltage is indicated, trim switch may be defective.
4. If no voltage is indicated at point E5, check continuity of ground lead from trim gauge G1 to junction box point G. If ground lead is good, move meter red lead to junction box at point E1 and meter black lead to point G on junction box. If battery voltage is indicated, lead is open between E1 and E5.