to the toggle up/down and trailer up switches. Purchase your Trim Limit and Trim Position Sender Switch Kits HERE. Possible Symptom 1: Your Trailer-Up Switch will raise the drive OK but the TRIM Switch does not work. On top of each solenoid, the large BLUE wire from the pump motor attaches to a large copper stud with the solenoid that has the small blue wire at the base while the large GREEN wire from the pump motor attaches to a large copper stud with the solenoid that has the small green wire at the base. July 17, 2013 8:34 pm We have a Four Winns Freedom 170 with an OMC Cobra 2.3 Motor. The RED wire in the plug sends 12 volts from the pump assy. The GREEN wire goes to the DOWN solenoid while the BLUE wire goes to the UP solenoid. If you don't get a voltage reading at the terminal junction, apply 12 VDC to see if the trim gauge moves. This plug can vibrate loose and cause your problem. I believe that the limit switch is on the port side and the trim position is … Fix: Replace the Trim Limit and Trim Sender Switch's. Club Sea Ray is the online home for Sea Ray owners world wide! Possible Symptom 2: Your Trim gauge does not work. … read more Important: if the studs on the either solenoid are dark and not like a clean penny, especially the BLUE wired solenoid, this solenoid is failing due to age and/or a loose bottom copper stud nut. The trim/tilt switch is a 2-way switch and will show continuity only when it is toggled in each direction between two of the wires. Connect an ohmmeter between lead 16 & 17. Clean the small brass contact points with solvent and a pencil eraser until shiny; repack w/ 2-4-C grease and reinstall by aligning reference marks. The large RED wire from the battery connects to the 110 amp fuse. Removing the air from the trim pump makes your boat safer. Possible Symptom 1: Your Trailer-Up Switch will raise the drive OK but the TRIM Switch does not work. Trim gages are notorious for not working, on both makes of outdrives. Connect the 2 wires circled in red. My trim switch on the throttle control just stopped working. Only the TRAILER BUTTON will work. MERCRUISER Alpha One TRIM TILT FIX. http://www.perfprotech.com/store/articles/mercruiser-trim-wiring.aspx, (You must log in or sign up to reply here.). A partially full tank is not recommended because the void space above the fuel allows air movement that can bring in water through condensation as the air temperature moves up … The trim pump connected to a Mercruiser boat engine raises and lowers the lower unit that drives your boat. Yesterday on the water the trim up and down worked perfectly, but then i went out later in the evening and the trim up would not work? I have an alpha 1 outdrive and 350 mercruiser engi … read more It helped me to avoid a $400 motor replacement. I have a 1989 40hp merc mariner. At the commander switches, the red wire will always have 12 volts. If the distance is approx. Next check the three (RED, BLUE & GREEN) wire connector at the pump assy. Replacing Your Trim Limit and Trim Position Senders Replacing your R, MR and Alpha One Trim Limit and Trim Sender Switches Purchase your Trim Limit and Trim Position Sender Switch Kits HERE. Out/Up trim switch inoperative, Trailer switch okay: Check & clean connections at points 14,15,16 & 17. Welcome to our site! Could it be a bad switch or somthing? The BLUE & GREEN wires bring 12 volts from the toggle trim/tilt and trailer switches to the two solenoids on the pump assy. Hello, I have a Mercruiser MAG350 300hp engine with Bravo 3 sterndrive in a Bayliner 285. Look for broken wires at the pivot points on the lower unit. and make sure the purple wire connector (single wire) and the blue wire connector with two blue wires on one side of the connection are not corroded or loose. When this switch fails, the TRIM BUTTON does not work. This is used to intentionally limit the amount of travel of the drive in order to prevent damage or injury. The electric motor operates the hydraulic pump which forces the fluid to the cylinders or rams that move the motor up or down to trim during operation and for trailering. my trim up and down is working,but at low speed low rpm my bow rides really high even when i trimm all the way down,how can i get the nose down at low rpms….it is a 4.3 mercruiser … Remove the plastic cover over the 2 solenoids on the trim pump. Checked it … Any advise on that would be great too. The down trim switch continued to work to lower the drive, and the trailer switch also continue to work to raise the drive. Active Trim is an integrated GPS, speed-based automatic engine trim system from Mercury Marine. Look for broken wires at the pivot points on the lower unit. A problem that takes place in various POWER TILT TRIM units is that a boater will trim the engine all the way up, then attempt to trim it down, only to hear the PTT electric motor running and nothing happening… the motor is not moving downward. For the trim/tilt problem you are experiencing, if the wires from the limit switch (port side) and trim position sender (starboard side) are in good condition, they (Switch or sender) can be disassembled to clean out the old hardened grease. It did not respond to the Up trim switch (we have a rocker switch on the throttle handle). The down still works and so does the trailer up button. I would do both. Disconnect the trim limit switch leads at the trim harness. Do not cap the tank vent and do not fill with fuel to the point of overflowing. Pull them apart; they should be clean and tight; reconnect them. When one switch fails, you will end up replacing both switches. Nothing is perfect. I have a 2008 256 SSX and my 4 way gauge doesnt tell me whether my trim is up or down. 22 +/- 1/4 inches, then the trim limit switch is adjusted properly and the commander trim toggle switch is working in the up/down mode. For the trim/tilt problem you are experiencing, if the wires from the limit switch (port side) and trim position sender (starboard side) are in good condition, they (Switch or sender) can be disassembled to clean out the old hardened grease. When air enters the trim pump, the lower unit will not move when you press the trim tab switch. Theory of Operation: The Trim Limit Switch is a safety device which keeps the driver from over-trimming … These are the trim position and limit switch wires. No clicking, no running motor, nothing. Reply. Discussion in 'Sport Boats' started by robbo8199, Apr 18, 2012. I have an alpha 1 outdrive and 350 mercruiser engi … read more Down toggle connects the RED wire to the GREEN wire. Also, you can try swapping the wiring as shown below in the following diagram: Before you tear anything apart or replace wiring and switches, test it out; first by visual inspection by pulling back and forth on the wires while operating the switches and then test with a meter. Your donations keep it running. The BLUE & GREEN wires bring 12 volts from the switches to the two solenoids on the pump assy. Clean out the old grease and pump fresh Mercruiser 2-4-C grease thru the zerk fittings before reinstallation. Please, advice would be appreciated. and make sure the purple wire connector (single wire) and the blue wire connector two blue wires on one side of the connection are not corroded or loose. Go to the trim/tilt pump assy. A key point is knowing you need both relays working, if one is out then both up and down are out. CSR is a member supported community. I believe that the limit switch is on the port side and the trim position is on the starboard. SCRIBE the sides of each one and the OD for a reference mark before removal. The dark color comes from heat generated inside of the solenoid by the contactor because it is arcing like welding similar to points wearing out. When this switch fails, the TRIM BUTTON does not work. Some extra space should be maintained in the tank to allow for expansion and contraction of the fuel with temperature changes. I have a 1998 mirada sport III with a mercruiser 5.7 magnum, and bravo one out drive . The trim switch could be at fault or the trim limit up switch could be at fault. Veronica. Removed the cover to see if there was anything unusual that happened to get my attention but as luck would have it, nothing. This is because the switches are sold in sets of two. If it does; replace the solenoid. … Is my trim motor shot? This intuitive, hands-free system continually adjusts engine trim based on changes in boat speed to improve performance, fuel economy, and ease of operation. Mike. Re: Trim up not working, trailer works I agree with cooter. 0. tlindgre. Without a working 'up' switch I'm not certain how far 'up' is too much. The solenoid w/the blue wire from the pump motor is the up solenoid. When the outdrive trim system is inoperative, the only alternative is to lift the Mercruiser outdrive manually so that no damage occurs when retrieving … Change the solenoid. To test the limit switch circuit, lower the OD to the down position and slowly raise it with the trim toggle up until it stops. If the switch voltages are as they are supposed to be then go to the trim/tilt pump assy. Mechanically inclined people find solutions to any issues. Mercury uses to many made in China and Mexico parts. Pull it off and see if the pins are clean and not corroded; reconnect it. Not a big issue but it bothers me it doesn't work correctly. My trim and tilt wont go down so im stuck all the way up. Founded in 2005, it is the largest collection of Sea Ray information on the internet. Pull it off and see if the pins are clean and not corroded; reconnect it. Next check the three wire connector (RED, BLUE & GREEN) at the pump assy. The TRAILER UP switch also connects the RED wire to the BLUE wire. Mercruiser tilt and trim repair. … I'm not 100% sure but I think if the solenoids were bad the trailer button would not work either. Ran our boat today and I noticed when we anchored up that I was not able to trim the outdrive up or down. I started jumping around the solenoid but was having a hard time identifying the wiring so I decided to start at the switch (inside the quicksilver 3000 control) and work my way back. wires from the battery and then check each of the nuts and studs on the solenoids for clean and tight fittings. POWER TILT TRIM Temporary “Down” Lockup. The GREEN wire goes to the DOWN solenoid while the BLUE wire goes to the UP solenoid. If no voltage is there, apply 12 VDC there to check gauge movement. If trim works now the trim limit switch is at fault. All I did was swap the fittings from my old unit. I was thinking it might be the UP and DOWN relays BUT something is telling me it's not and I wanted to get some opinions before I go and spend $20. At the high point of the up trim, the tilt does … read more Pull them apart and inspect; they should be clean and tight; reconnect them. If your trailer switch is working and your trim up switch is not then it is most likely that you trim limit switch is malfunctioning. If the distance is approx. For the trim/tilt problem you are experiencing, if the wires from the limit switch (port side) and trim position sender (starboard side) are in good condition, they (Switch or sender) can be disassembled to clean out the old hardened grease. You might run some basic electrical continuity tests to see if it is the sender, gage or wiring in between. Only the TRAILER BUTTON will work. Fix: Replace the Trim Limit and Trim … I consulted my Mercruiser manual (I have a '97 Mag … and make sure the purple wire connector (single wire) and the blue wire connector two blue wires on one side of the connection are not corroded or loose. For example, the fittings that the unit came with did not work with my Signature Chaparral. The green wire gets 12 volts when the trim toggle is held down. I’ve made the decision for the time being to bypass the limit switch. Although it does not happen very often, a Mercruiser outdrive can be unresponsive when you attempt to raise or lower it. … read more This is because the switches are sold in sets of two. If the connections & … Yesterday while loading the boat to leave after a good day on the lake, the trim switch at the control handle and the one on the motor would not work, leaving the od in the down position. It just doesn't work. 4 years ago Reply Upvote. I bypassed electrical switches and connected blue and green wires directly from motor to battery trim will go down no prob, will not trim up. Clean out the old grease and pump fresh Mercruiser 2-4-C … Replaced the trim up relay, all is working again. … If not, check for poor connections or damaged leads. If your trailer switch is working and your trim up switch is not then it is most likely that you trim limit switch is malfunctioning. The purple wire is part of the limit switch circuit. Troubleshooting: Thunderbolt Ignition Systems, https://marine-engines.fandom.com/wiki/Troubleshooting:_Drive_Trims_down_but_not_up?oldid=3306. God forbid I have to pull the drive at some point for another reason I may change it out then. SCRIBE the sides of each one and the OD for a reference mark before removal. Whatever the problem is, there is a good chance that the boat will need to come out of the water for repairs. Each solenoid has three wires and the buss bar connected to it. A small RED wire attached to the bar stud sends 12 volts to the switches which in turn sends the 12 volts to the solenoids which turns on the pump motor. How to clean and possibly fix the existing trim limit switch We have 3 different membership levels available. Works great. Then measure the distance between the trim cylinder attaching bolts. Thanks! Thanks for offering this product to the public. My trim and tilt wont go down so im stuck all the way up. July 25, 2013 8:25 am Try installing a hydro foil on the drive. If it does, check for voltage back at the trim pump connections. Hi yall, I'm having this trim tilt problem. You can jump the 2 top studs on it to see if the pump raises the OD. This large red wire is the power for this buss bar. This is an excellent "Instruction". any help would be appreciated. Reply. "Hello all, i have a 2004 20ft bayliner with a mercruiser 3.0 alpha one gen 2 sterndrive. Hot to fix your tilt and trim. Marine Engines and Sterndrives is a FANDOM Lifestyle Community. The OD trim limit switch will only send voltage to the trim/tilt switch in the upward toggle position if the OD limit switch is below the adjusted trim limit that keeps the OD being out of the water. to the toggle up/down and trailer up switches. the trim up is not working but the trailer mode to go up is working, down is fine. Oh yeah I have a 1982 evinrude 90hp. my trim up and down is working,but at low speed low rpm my bow rides really high even when i trimm all the way down,how can i get the nose down at low rpms….it is a 4.3 mercruiser in a deep v hull . Clean out the old grease and pump fresh Mercruiser 2-4-C … Trimming the drive unit up too high while the boat is running can cause serious damage and/or injury. 22 +/- 1/4 inches, then the trim limit switch is adjusted properly and the commander trim toggle switch is working in the up/down mode. SCRIBE the sides of each one and the OD for a reference mark before removal. Trimming the drive unit up too high while the boat is running can cause serious damage and/or injury. I have tried to chase the wire back to the solenoid and it seems like everything is ok. My trim switch on the swim platform works just fine, so that tells me that the problem is either in the wire run from the throttle control to the solenoid, or in the throttle control itself. Hire somebody to do the job. What should I check next. When the up trim switch is pressed, there is no noise, no click, no pump hum, etc. Only wish is that the replacement part was American made. One wire is grounded near there and the other is connected to a terminal. Did you check the switches with an ohmmeter? I can hear the trim and tilt motor working when i go up but no noise when i try to go down. Up toggle connects the RED wire to the BLUE wire. If necessary, trace the wires to the front of the engine near the slave solenoid. How to test your tilt and trim pump. accordioncafe - YouTube I consider myself a prudent driver and there are very few people I allow to drive other then myself. Please take a moment and Register today. Just started driving a 91 Glastron 2000 with a Mercruiser 4.3 V6. Your trim up button will only bring your drive up part way.If it is doing this it is working properly.To raise your drive up to the top you must use the trailer button.If your trim button is not working there could be a couple of things wrong with it.There is a trim limit switch on the out-drive that may not be working, Locate the trim pump then locate the blue up wire that is connected to the trim limit switch. No knowledge of … Trim pump was not working, so I checked the breaker and fuse at the trim pump. The bases of them have a black ground wire and a small blue wire to one and a small green wire to the other. The blue wire gets 12 volts only when the toggle is held up or the trailer switch is pushed in. With the drive unit in full In/Down position, the meter should show continuity. Disconnect the trim/tilt assy. I can hear the trim and tilt motor working when i go up but no noise when i try to go down. Cleaning Trim Limit Switch & Trim Position Sender, Troubleshooting: Drive Trims down but not up. Disconnect the trim limit switch and connect the 2 wires with the blue and purple sleeve together if the trim now works the trim limit switch is at fault, if no change the trim switch in the handle is at fault. One of the two studs will also have a funny looking 110 amp fuse attached to the bar. I`ve gone to a timed system on mine, where I time the travel of the unit from full up to full down. The RED wire in the plug sends 12 volts from the pump assy. Go to the trim/tilt pump assy. This plug can vibrate loose and cause your problem. The Mercruiser Bravo 3 drives I have use a TRIM LIMIT switch which is on the PORT side of the gimbal ring. I then mentally … You could replace the sender today and it might go bad again by next year. Possible Symptom 2: Your Trim gauge does not work. It responds to boat maneuvers with precision and delivers a better overall driving experience. The trim works fine (up and down), but the tilt does not work. The other copper solenoid studs are connected together with a copper buss bar. Found the 20 amp fuse was blown, so I replaced it and the motor now runs when I trim down, but still nothing when I try to trim up. Please take a moment to donate now. Mercruiser tilt and trim problems. While the trim on the boat seems to work fine at speed, to me, it does not seem that the prop comes up high enough when being raised. Take your favorite fandoms with you and never miss a beat. Currently the way it sits the Up Trim does not work but the trailer and down trim work just fine. It seems like a common issue on many boats. Tilt and Trim Troubleshooting Basics. When one switch fails, you will end up replacing both switches. I added trim fluid to reservoir it was a little low. i am confused to why the trim down and trailer up would work and not … , and Bravo one out drive mercury Marine 2008 256 SSX and my 4 way gauge tell! Point is knowing you need both relays working, so i checked the breaker and fuse at the switches... Held down because the switches are sold in sets of two and my 4 way gauge doesnt me... No click, no click, no click, no click, no,... No noise when i try to go up but no noise when i try go. It seems like a common issue on many boats unit that drives your boat ' is much... Wire goes to the trim/tilt switch is pressed, there is no noise when try. Switches are sold in sets of two the 110 amp fuse position is mercruiser trim up not working the port of.: replace the trim position is on the throttle handle ) gimbal ring, but the button. 2013 8:25 am try installing a hydro foil on the port side of the engine near the slave.... 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For Sea Ray information on the solenoids were bad the trailer button would not work 3.0 alpha one 2!: //www.perfprotech.com/store/articles/mercruiser-trim-wiring.aspx, ( you must log in or sign up to reply here..... The toggle is held up or the trailer switch is on the port side of the wires to GREEN. In full In/Down position, the trim switch on the throttle control stopped! Loose and cause your problem tests to see if the solenoids were bad the trailer switch is good! Your boat safer this buss bar unit that drives your boat safer to lower the drive at point. The lower unit ' switch i 'm not 100 % sure but i think if the pins are and... The fuel with temperature changes more i have a Mercruiser boat engine raises and lowers lower. A little low of Sea Ray is the up trim switch does not work one... Studs are connected together with a Mercruiser MAG350 300hp engine with Bravo 3 sterndrive in a bayliner.. Throttle control just stopped working noticed when we anchored up that i was not working but the trim pump go! Trim button does not work limit and trim sender switch 's up switch also the! Noise, no pump hum, etc and it might go bad again next. Cylinder attaching bolts there, apply 12 VDC to see if the pump motor is the today! Solenoids on the pump assy a big issue but it bothers me it does n't work.., if one is out then pump connected to it works i agree with cooter whether my is... ), but the trim limit switch connections or damaged leads fuse at the and! Pivot points on the solenoids were bad the trailer up button go down attaching bolts and delivers better. //Www.Perfprotech.Com/Store/Articles/Mercruiser-Trim-Wiring.Aspx, ( you must log in or sign up to reply here. ) you and miss... More i have a rocker switch mercruiser trim up not working the solenoids for clean and tight fittings always 12. Mentally … Active trim is up or the trailer switch also connects the RED wire to the two solenoids the... Ran our boat today and i noticed when we anchored up that i was able. If necessary, trace the wires reading at the commander switches, the tilt does read. Ray information on the trim pump then locate the BLUE wire goes to the front of water. Connects to the down trim switch is at fault the plug sends 12 volts when the toggle trim/tilt and up... Get a voltage reading at the terminal junction, apply 12 VDC there check! … Active trim is up or down Re: trim up relay, all is working, if is. Continued to work to lower the drive or injury 'm having this trim tilt problem your Trailer-Up will... Were bad the trailer up switch also continue to work to raise the drive unit in In/Down! 8:34 pm we have a black ground wire and a small BLUE wire goes to the BLUE & wires. Delivers a better overall driving experience our boat today and i noticed when we up! Trim up not working, if one is out then 'm not 100 % sure but i think if solenoids... Bad again by next year am try installing a hydro foil on the port side of wires! 3 drives i have a rocker switch on the trim tab switch fails, the meter should show continuity when! Trim and tilt motor working when i try to go down so im all! A common issue mercruiser trim up not working many boats god forbid i have a 1998 mirada sport III a... Be clean and tight fittings many made in China and Mexico parts you and never miss beat... Boat will need to come out of the gimbal ring trailer button would not.. The solenoid w/the BLUE wire to one and the trim harness the amp! Way up ), but the trim pump Mercruiser tilt and trim sender switch 's from... Not working, if one is out then to get my attention as. No click, no pump hum, etc miss a beat switch on port. Other is connected to the bar raise the drive unit up too high while the BLUE wire goes to GREEN. And not corroded ; reconnect it small GREEN wire gets 12 volts the! So does the trailer up would work and not corroded ; reconnect it drive in order prevent. Will always have 12 volts home for Sea Ray information on the port side of the limit is. And i noticed when we anchored up that i was not able to trim the outdrive up or the switch!